This post was updated on June 22, 2024
Hi, I am Scott Paul, a leading exterior restoration contractor and business owner with over 30 years of experience in exterior deck cleaning and prep. My reviews and help tips are based on my history as a wood and deck restoration contractor and actual hands-on testing, all designed to present you with the top product choices. See here for more info about me
My Best Deck Cleaners for 2024
Many deck cleaning solutions are on the market for 2024, but which deck wash will work well without damaging your wood? I have done extensive research over the last 30 years to find the best deck cleaners and compared the positives and negatives of each type of cleaning product. However, if you’re still unsure which deck cleaner is best for you, I am here to help. Just post a comment or question below, and I’ll reply as soon as possible.
My Steps To Prepping With A Wood Deck Cleaner
First, Gather Your Deck Cleaning Equipment
- Water! Yes, this is basic, but you cannot clean a deck without a water source.
- Pump Sprayer for applying your deck cleaning solution.
- Deck scrub brush to help agitate the cleaner
- Pressure Washer – Not 100% needed, but it sure makes your deck cleaning faster and easier.
- Gloves, goggles, and masks.
- A Quality Deck Cleaner!
How Wood Deck Cleaners Works
Exterior wood and deck cleaners are designed to clean and prep the wood before applying wood stain. These cleaners come in many different concentrates with different ingredients. The primary purpose of deck cleaners is to remove contaminants such as dirt, oxidation (graying), mold, algae, and, in some cases, deteriorated stains that have failed. However, deck cleaners are not designed to remove old stains; you would need a deck stain stripper for this. Deck cleaners are typically made up of caustic soaps that will aid in scrubbing or pressure-washing your wood during prepping. Most deck cleaners will raise the pH of the wood, so you’ll want to follow up by using an acidic deck brightener to balance it out, leaving the wood in a neutral state.
Types of Wood Deck Cleaners in 2024
Oxygenated Deck Cleaner
Oxygenated deck cleaners have really taken hold in the past ten years. These cleaners contain the active ingredient sodium percarbonate. This is an EPA-registered ingredient for mold and mildew removal. Deck cleaners that contain this ingredient will also contain additional surfactants that will boost the overall effectiveness when cleaning exterior wood. These cleaners come in powdered concentrates that are mixed with water and then applied to the wood’s surface. They’re best applied with a garden pump sprayer and then scrubbed or lightly pressure-washed off.
- My Pros: Environmentally safe and effective cleaner; registered for mold removal by the EPA; very cost-effective; excellent at removing contaminants
- My Cons: Must be mixed with water to the desired concentration; only active for 30 minutes; may need warm water for the best results
- Examples: Restore-A-Deck kits, Defy Wood Deck Cleaner, Gemini Restore Kit
Bleach-Based Deck Cleaner
Many of the older deck cleaners contained the active ingredient sodium hypochlorite, the main ingredient in bleach. These deck cleaners will “whiten” the wood and contain surfactants that help remove dirt and grime. Bleach-based cleaners have recently been found to damage the wood’s lignin, which helps bind together the cellular structure of the wood.
- My Pros: Premixed in liquid form; excellent mold and algae remover
- My Cons: May cause damage to the wood cells; average cleaner
- Examples: 30 Second deck cleaner, Olympic deck cleaner, Clorox deck cleaners, Cabot wood cleaner
My 4 Pro Deck Cleaning Tips
Wood restoration can be among the most misunderstood and challenging projects for do-it-yourself homeowners. Remember that a new deck sealer will fail prematurely if the wood is not appropriately cleaned beforehand.
1. Always Prep Before Staining
When wood becomes weathered, it needs to be cleaned before sealing. Cleaning a wooden deck can be difficult for a homeowner who is uneducated or new to the process. The degree of deck prep will vary based on your wood’s condition and age. If you have any questions, please ask me in the comments below. Pictures of your wood deck would help me offer the proper advice for cleaning your deck.
2. Deck Clean at a Low-Pressure Wash
Using a pressure washer can be an effective method. However, you must also use the proper cleaners to remove the dirt and grime in the wood. Most people make the mistake of using too much water pressure when using a pressure washer. Wood is pretty soft and can be damaged easily from excessive water pressure.
Turning the pressure down on the washing unit or switching to a spray nozzle with a larger orifice will provide a lower pressure suitable for cleaning. If you use a quality wood cleaner, lower pressure will still give you a deep clean. Wood cleaners break up dirt and debris, allowing less pressure to be adequate for cleaning the wood without risking damage.
My Pro Tip on Pressure Washers: PSI (pounds per square inch) is often misunderstood. When using a 3500 PSI pressure washer, the “3500” would only be at the very tip when it comes out. If you are washing at a safe distance of 8-12 inches away, your PSI will drop roughly in half and is safe for wood. Another important tip is that GPM (gallons per minute) is far more important than PSI. When washing with a GPM of 2-3 per minute, you will wash twice as fast as a machine rates at 1-2 GPM. Use a gas-powered pressure washer. Electric washers are not as effective at cleaning.
3. Always Use a Brightener after Cleaning
Wood deck brighteners, also called deck neutralizers, are acid-based products that neutralize deck cleaners and help lower the pH level, making the wood neutral. This opens the wood pores and brightens the wood, bringing out the grain’s natural beauty. A simple application of deck brightener after cleaning is all needed to complete the proper prep work for an outstanding stain finish that will last.
My Pro Brightening Tip: After applying the wood brightener, let sit for 10-20 minutes and then rinse well until soap suds disappear
4. Let the Wood Dry Before Staining
4. Let the Wood Dry Before StainingAfter the wood has been cleaned, brightened, and rinsed thoroughly, it must dry for a few days. You can check the wood with a moisture meter, but it isn’t necessary. You don’t want to apply a wood sealer to the deck until the moisture level is below 15%. If you don’t have a moisture meter, waiting a few days is usually adequate before sealing.
My Pro Staining Tip: If using the Restore-A-Deck Wood stains, you can skip the drying part. These stains can be applied to a damp or dry deck!
What Is My Best Cleaner for Wood Decks?
My research has narrowed the field to four top deck cleaning solutions:
- Restore-A-Deck cleaner and brightener kit
- Gemini Restore cleaner kit
- Defy Wood Cleaner
- RAD Mildew Cleaner and Preventer
In general, I like oxygenated deck cleaners. They do a great job and are usually less expensive. Read my reviews to find the best cleaner to make your deck shine!
My #1 Best Deck Cleaner | My #2 Best Deck Cleaner | My #3 Best Deck Cleaner | My Honorable Mention |
 |  |  |  |
From: $64.99 *Ships Free | From: $64.99 *Ships Free | From: $35.99 *Brightener Additional | From: $49.99 *Ships Free |
My Top-Rated Wood Deck Cleaner Reviews
1. Restore-A-Deck Cleaner and Brightener Kit
Restore-A-Deck is the first manufacturer to offer a deck cleaner and a deck brightener in the same kit. Restore-A-Deck wood deck cleaner comes in a powdered concentrated formula. Each 2-pound container makes 5 liquid gallons. Pour each product into a 5-gallon container and add water to dissolve the powdered concentrate.
- Manufacturer: Restore-A-Deck
- Product Type: Powdered concentrate kit containing deck cleaner and deck brightener
- Available Sizes: 2-pound container (makes 5 gallons)
- Consumer Rating:
- My DeckStainHelp.com Rating: 9.0/10
- Purchase on Amazon Here: Restore-A-Deck Cleaner Prep Kit
- Purchase Direct for Less Here: Purchase Here
2. Gemini Restore Cleaner Kit
Gemini’s Restore cleaner and brightener system is a powerful, “eco-friendly” two-part restoration system. It’s a 100% biodegradable concentrated powder formula that can prep wood surfaces for re-coating with a wood or deck stain and restore weathered gray wood to its natural color. Restore-A-Deck private-labels this for Gemini.
- Where to Buy: Gemini Restore Cleaner Kit
- Product Type: Powdered concentrate kit containing deck cleaner and deck brightener
- Available Sizes: 2-pound container (makes 5 gallons)
- Consumer Rating:
- My DeckStainHelp.com Rating: 9.0/10
- Purchase Direct for Less Here: Purchase Here
3. Defy Wood Cleaner
Defy Wood Cleaner is a safe alternative to chlorine bleach-based cleaners. It removes general dirt, grime, and UV graying while restoring the wood’s natural color tones. It’s an environmentally safe, powdered, oxygen-based concentrate that makes 5 liquid gallons per container.
- Where to Buy: Defy Wood Cleaner
- Product Type: Powdered concentrate
- Available Sizes: 2-pound container (makes 5 gallons)
- Consumer Rating:
- My DeckStainHelp.com Rating: 8.5/10
- Purchase on Amazon Here: Defy Wood Cleaner
- Purchase Direct for Less Here: Purchase Here
Honorable Mention for Mildew Cleaner and Preventer for Decks
RAD Guard RTU (Ready-To-Use formula) is a no-rinse cleaner and preventative that is safe and effective for removing and preventing stains caused by mold, mildew, and algae on exterior surfaces and exterior wood or deck stain coatings.
My Pro Tip: RAD Guard RTU is not used to prep wood for wood or deck stain application. The primary goal is to remove mildew or algae stains and prevent them from returning.
- Where to Buy: Restore-A-Deck
- Product Type: Mildew and Algae Cleaner and Preventer
- Available Sizes: 1 Gallon
- Consumer Rating:
- My DeckStainHelp.com Rating: 9.5/10
Innovations in Deck Cleaning Technology
Pressure washers, scrub brushes, and old-fashioned elbow grease are the most popular deck cleaning tools. However, if you dread the thought of scrubbing your deck, you’re not alone — and you may be in luck.
RoboDeck has developed the deck-cleaning equivalent of the Roomba, designed to make cleaning and maintaining your deck easier than ever. The robotic deck cleaner maps your outdoor space, similar to how Roomba maps your home. Then, it uses built-in sensors and AI to navigate around stairs and ledges while cleaning. It can also identify problems like loose boards or screws.
My Safety Considerations When Using Deck Cleaners
Before you start cleaning your deck, set yourself up for success by protecting yourself and your outdoor space. Check out the following safety considerations to keep top of mind when planning a deck-cleaning project:
- Move outdoor furniture and decor. Make sure your deck is empty before you start cleaning to avoid damaging furniture or staining outdoor cushions.
- Cover up. Use gloves, long sleeves, and long pants to avoid splatters, and always wear protective glasses. Remember, even the best deck cleaners can cause skin irritation if they get on your skin or in your eyes. Pressure washers can loosen grime and splinters from boards, which could cause injury.
- Store your leftover materials properly. Make sure you store any leftover deck cleaning solutions in their original containers, with the lid screwed on tightly and the bottles placed in a well-ventilated area far from any open flames.
Watch My Video On Deck Cleaners
Common Questions About Wood Deck Cleaning
Do I need a Deck Cleaner?
Yes! I highly recommend using a deck cleaning solution to quickly remove dirt and stains while prepping your wood deck for a new coat of deck stain or sealant. Deck cleaners prep your deck surface so it’s clean, undamaged, and in the best possible condition for your next step. Deck Cleaners are more effective and safer than general cleaner options like TSP or Bleach.
Should I Pressure-Wash or Use Deck Cleaner?
It’s actually a good idea to do both. You’ll want to use a good deck-cleaning solution, but you can also speed up the process by using a pressure washer to clean the solution off the deck once it’s done working. Be sure to use low pressure, though: Keep it at 1,600 psi or less to avoid damaging the wood.
Is Deck Cleaner Better Than Bleach?
Yes: Bleach can do a decent job of cleaning off dirt, mold, and mildew, but it can cause long-term damage to the wood. A proper wood deck cleaner is a better option for homeowners looking to keep their wood deck healthy and clean before applying a new layer of stain or wood seal.
Does Deck Cleaner Remove Mold?
Oxygenated deck cleaners, when used in combination with a deck brush, are great at removing mold and mildew that have formed on your wood deck. You’ll have to scrub the cleaner into the wood a bit to make sure all of the mold has been removed before you move on to the next step, but deck wash can be quite effective in getting rid of mold without damaging the wood.
How Often Should I Clean my Wood Deck?
Generally speaking, cleaning your deck at least twice a year is a good idea to reduce the risk of damage from moisture, mold, mildew, and built-up grime. We typically recommend a thorough cleaning in the spring and autumn.
Can I Use a Deck Cleaner on Composite Materials?
Yes, you can use a deck cleaner on composite decks. It’s critical to find the best composite deck cleaner first, though. In many cases, composite wood may require a milder cleaning solution to avoid damaging the material.
Are There Any Environmentally Friendly Deck Cleaners?
Some of the best wood deck cleaners on the market, such as oxygenated deck cleaners, are environmentally friendly. As mentioned above, oxygenated deck cleaners feature sodium percarbonate as the active ingredient.
Sodium percarbonate is an EPA-registered cleaning agent that works quickly and effectively to remove mold and mildew from your wooden deck. It’s also the active ingredient in several of our favorite deck cleaners, such as the Defy Wood Cleaner.
How Do I Prepare My Deck for Cleaning?
In most cases, deck cleaning doesn’t require much prep work to start. Remove all furniture and decor from the deck, then sweep the boards and give them a quick pre-rinse before applying your deck cleaner.
My new fence and deck has been down at least nine weeks now and the moisture content is around 11% or lower. It is a new deck and is ready for staining what mile cleaning agent would you recommend prior to staining?
When to stain new wood is not based on moisture % but porosity. See this article for tips:
https://www.deckstainhelp.com/how-long-should-you-wait-to-stain-a-new-deck/
We would wait at least another month or two and then prep with the Restore A Deck Cleaner and Brightener Kits.
Hello Scott, Deck [pressured treated] boards were installed in 8/2023, haven’t had it stained or waterproofed. It’s lightened up but still has a few circles where for some reason they were marked with a circle, which has disappeared, but left a white circle. Is it necessary to use a deck cleaner or just to power wash before using a stain/waterproof treatment? TIA
Use a deck cleaner while pressure washing to avoid damage to the wood. Brighten after.
Best penetrating oil based stain for newly sanded porch floor. Think its mahogany or could be Fir) Want to show off wood grain but still to be walked on. Your recommendation???
Try the Restore A Deck Stains or Armstrong Clark Stains.
Do you prefer Restore A Deck stain to TWP 100 transparent oil based stain???
We like them both. Excellent stains.
Is ActiVox a good cleaner for a'” fir wood” deck that’s 100 year wood.
Sorry but I never heard of ActiVox.
Our deck must be done over the next 1-2 days, where can I get Restore-A-Deck in British Columbia Canada?
Online only.
hello and thank you for the info. Where can we buy these deck cleaning products in Canada?
thank you!
You would have to check with manufacturer websites and then have them shipped if no local dealers.
Joe. Where did you purchase Restore-A-Deck. We are in BC Canada
On their website to buy.
I used Restore a Deck stripper and Brightner on a 1 yr. old cedar deck that the stain had failed. After it dried the wood was feathered so I did a light sanding. Do I need to clean and brighten again or can I just use a brighter to open the pores?
I found this site too late for the first stain choice.
Brighten and pressure wash rinse should be enough.
Great! Thanks so much for your quick response. This forum is a great resource. I wish I had found it sooner.
You are welcome!
Have western red cedar siding on house for 40 years replaced some of the bad/cracked pieces. It looked patch work so had cleaned, then bleach cleaned and am going to apply an oil based stain shortly. Should I apply a brighter to the wood since it looks so whitened now?
Brighteners do not fix the “whitened” washout wood appearance. That is from the bleach and cannot be fixed with chemicals. Good news is it should go away with a proper stain like these: https://www.deckstainhelp.com/best-semi-transparent-deck-stain-reviews/
Three year old pressure treated pine deck, first cleaning and staining. Followed the steps but had to end up sanding the furries off. Twp semi solid, restore a deck cleaner and brightener, applied the first coat of the stain and six boards or so did not soak in like the rest of the deck. Darker color and tacky to the touch. Waiting to see what to do before the second coat. Help!
Do not add more. When doing a second coat, it has to be wet on wet.
https://www.deckstainhelp.com/deck-stain-instructions-for-wet-on-wet/
You cannot apply a swcond coat of the TWP once the first coat has dried.
California
Lots of sun, though partial oak shade.
Redwood, circa 1990’s, good condition
No apparent mold or mildew
September 2020, after stripping and neutralizing old red stain we did not like (alkyd and various oil), With your advice I chose TWP 1500 clear transparent and liked the natural tone. It turned dull and gray after a year or two.
I anticipate either Restore A Deck two step vs. stripping plus neutralizing. Then more TWP 1500 (I have 1-2 gallons left in the 5 gal can). I would also consider a cedar tint since that should give me a little more sun protection.
I intend to leave rails as-is this time and only do the 950 sq. ft. floor. Never impressed that my now-leaking pressure washer did any more than hose nozzle unless I got so close as to damage wood, so I am inclined to use scrubbing brush and hose nozzle during prep. Water is scarce here, but I don’t see any way to conserve water on this job.
How to load pictures?
Click the uplaod icon to load pics. You do need a colored stain for UV protection:
https://www.deckstainhelp.com/will-a-clear-sealer-prevent-graying-on-deck/
Which type stain to use, water based or oil based and why
Hi Bob,
https://www.deckstainhelp.com/water-based-vs-oil-based-deck-stains/
Please see this article and answer the questions at the bottom for better advice.
https://www.deckstainhelp.com/the-5-best-deck-stain-reviews-and-ratings/
I am trying to clean up a cedar (I think) gazebo. It is nearly 30 years old and is structurally sound. I’ve used Behr All-in-One Wood Cleaner, pressure washing, and elbow grease with a brush. But many white streaks remain on the underside of the roof. How can I remove those streaks? Or will a stain cover them up? If so, what stain would you recommend? Thank you very much!
Those are bleach runs. Stain will not cover it. You could try to even it out by adding more bleach but not sure if that will work.
Thank you very much for this quick response, Scott. I’m impressed that you’ve been answering such questions on this site for ten years now!
Welcome!
Would you recommend I try chlorine bleach or oxygen bleach? What is the best dilution to use? How long should I leave it on the wood before washing it off? Thank you, Scott!
Chlorine. 1 part bleach to 4 parts water to start. Take precautions with yourself and surrounding areas.
Thank you very much, Scott!
I see here your reply to Jack, in particular, you rec. using TWP or Armstrong Clark stains, both seem to be oil based.
From what I’m reading in other places here and on other sites, oil based stains can harbor mold spores/growth due to the resin or linseed in the oil based stains.
So, is it best to use an oil or water based stain ?
Also, we’re dealing with replacing rotten wood on a back deck that apparently is caused by mold getting hold of it and spreading like a cancer, if you will.
What is the best way to “KILL” and prevent the mold on wood sections of this deck we choose not to replace ?
Clorox, vinegar, oxiclean, copper green or what ?
Have tried so many products and still have a problem, also see where Clorox is not good for the lignin of the wood but just trying to get this right, once and for all.
Totally frustrated with our very large PITA back deck that we have to keep replacing wood on.
The older part of the deck ( side vs back ) was made from lumber when arsenic was used in the treatment process, it faired better by a long shot ( no mold ) than the newer wood ( back deck) without arsenic.
However, am having to replace it also now …with the non arsenic wood …due to sun/heat damage over 21 years . Don’t want mold problems with it too going forward !
Quality oil-based stain will have mildewcides in it to prevent mildew. Water-based stains though will not promote mildew growth. Look at the Restore A Deck Stains for this.
thank you so much!
So what about a good product to KILL mold spores?
Have tried everything I can think of; concrobium, white vinegar, oxiclean, rmr 141, and to small extent, clorox . ( now trying copper green due to the other products not working in this instance ) Also using Grace Vycor on the joist.
What would be the best way to proceed with the restore a deck products on new/old wood mingled on the deck flooring and railing components?
Is stripping, brightening, etc needed on the older wood we are keeping on the deck that has a water based stain on it ?
This is hard work, not to mention expensive !
Do you have pics of the issue that you can add?
Rich — I cleaned and brightened my redwood deck with Restore-A-Deck in early july. I have not stained it yet. Can I stain now, or should I re-brighten it?
Redo the prep fully.
Concerning deck cleaning, you recommend the oxygenated cleaners, and in the video you imply that the bleach-based cleaners change the pH of word. Therefore I’m wondering if when using the oxygenated cleaners, you would need to follow app with a brightener?
Yes, you have to brighten after using an oxygenated deck cleaner.
I dont know if people in general are aware that brightening is needed. At 50 I’m just learning about brightening. Most vids and Big Box store reps say clean and stain, and Home Depot has only a Teak brightener.
I used an acrylic deck stain which didn’t hold up well. A lot of the stain has pealed. I don’t want to use the same stain. What do you recommend to go over the top of the existing acrylic stain
You cannot go over it. It has to be removed first. Feel free to post some pictures for help.
Hello,
Is the Restore a Deck Cleaner OK to use if you only what to clean the deck and have no plans of re-staining this year?
Also, should a brightener be used after cleaning or is this only used when you have plans to re-stain?
I have a 2 year old cedar deck that I stained last year with Armstrong semi-transparent stain. Deck has got dirty/mildew over the winter and want to clean it up for this year.
Thanks for all your help!
No, only use deck prep products like the RAD when you plan on recoating.
What do you recommend for general cleaning of the deck if you are not re-staining/recoating?
Thanks.
Warm water and some dish soap.
Thank you for all of the help and information you provide!
You are welcome!
I have a new pressure treated deck. About a year old. What is the best product to put on it. We would like to see the grain. Going to clean it with rock solid rustled deck cleaner.
Use one of these brands: https://www.deckstainhelp.com/the-5-best-deck-stain-reviews-and-ratings/
Hi. I just finished prepping my deck with Restore-A-Deck 1 and 2. On Friday I will stain with TWP 100 (this will be the second time staining this deck. First one was two years ago.) My question is how should I get rid of bird poo dropped on the flat rail over these past 48 hours of drying. It’s not terrible, but present… Thank you
Wipe it off with a damp cloth a couple of hours before staining.
Okay! Thank you for the prompt reply!
How would you rate Thompson’s 3 and 1 wood cleaner for use on a new wood deck roughly 1.2 months old?
All Thompson’s products are cheaply made.
Earlier this season, I stained my new pressure treated deck with Cabot dark brown stain. However, over time, my dogs foot prints have left very definitive path marks in the areas of higher traffic. Like they’ve been absorbed into the stain. Thinking I need to wash the deck (looking for best product) but then thinking I need to sand and reapply another coat of stain to get rid of his prints. What about a sealant beyond that? Is there anything I can do that would protect the surface to point that any further paw print marks can just be rinsed away ?
You cannot seal over a deck stain. It will peel if you do. The only thing you can do is fully remove the Cabot and go with a better brand of stain.
Tell me A better stain that will not perform same way ?
Any of these brands: https://www.deckstainhelp.com/the-5-best-deck-stain-reviews-and-ratings/
Have you tried the Penofin cleaner and Brightner? Thoughts?
Yes, not fans.
I used Armstrong Clark product to stain my older mahogany deck — looks great and seems to be very protective. This year the pollen was horrible. I can’t seem to rinse it off the deck (used a dark colored stain). Any suggestions of products to use with garden hose to clean off pollen?
Use water only as deck cleaners should only be used when you plan to reapply with the same color and stain brand.
Water is not removing pollen. Tried already. Dawn dishwashing soap or vinegar?
Anything too aggressive and it will remove the stain as well. Try some warm water and a little bit of dish soap.
I plan to stain an old deck (that has never been stained) using Armstrong Clark semi-solid stain. I will be cleaning with a powerful pressure washer. Is it absolutely necessary to use both a cleaner and a brightener? Or could I get by with one product? If so which product would you recommend? I am trying to be frugal and am not shooting for perfection in the look of the wood. . I mostly want to protect and maximize the resistance to wear and tear and peeling, etc.
Yes, use both cleaner and brightener for best results.
Hi – i have sanded a 4 year old mahogany deck almost back to its original state and am going to put a clear stain on it as i want to keep the color as natural to the mahogany wood as possible . I think i should also clean it before I stain but am worried the cleaners will ‘lighten’ or change the color of the wood. I know the oxygenated cleaners are better than the bleach based ones but will they change the color of the wood? What should i use to clean it before staining ? Thanks
All deck cleaners will change the color somewhat. On another note, a clear sealer will not protect the wood from graying. It will gray in a matter of month.
I stained my new deck last August and would like to stain again this June. Should I wait longer, or is that length of time ok between stainings?
As long as you prep, you can stain now.
I have a pine deck that was built in 2019. It’s not been stained and has aged well. There are a couple of mildew stains and a little staining from red clay. What would be the best prep before staining? Best cleaner and tools. Thanks!
Use the Restore A Deck Cleaner and Brightener kits for prep. Apply with a pump sprayer and pressure wash off.
Can you get this at any local stores
Check with them directly. http://www.restore-a-deck.com
This is probably wrong place to ask — (I can’t figure out how to post a question on one of the forums, even though I click start topic.) So here goes: We have and old deck with a splinter hazard. We will be sanding it. If we sand it before we clean it aren’t we just driving any mold and spores into the wood? Or are we blowing them away, so to speak? I think you are recommending sanding it then cleaning it, then staining it. The appearance is not the primary factor here, as it is around a pool. I am just not clear on the correct order. We have stained in the past with TWP 100 semi-transparent cedar and have been quite happy, but want to minimize hazard of older wood by sanding this time. Thanks.
Cleaning does not drive mold into the wood, it would remove it if there.
I was wondering about the sanding before.the cleaning. But I think we have settled on sanding then cleaning as you suggest. Thanks.
After cleaning my deck with Mold Armour I found this forum.
Deck looks good. Now should I use a proper wood cleaner, then a stripper to remove the loose solid stain then brighten?
I plan on using Defy after reading extensively here.
Post some pictures of your deck.
This is after mold Armour
You have many different layers of old stain. To fix correctly you need to power sand it all off down to the bare wood. Strippers will not get it off.
Once fully removed, use a deck cleaner and then a wood brightener for final prep. You can then use a penetrating semi-transparent stain or a solid stain again.
Need to clean and prep 20-yr old deck tot re-stain with solid color acrylic deck stain. 3-yr old coating is peeling in chunks — about half can easily be removed with scraper — other half has good adhesion. What cleaner is recommended?
Sand and strip to get it all off. Cleaners will not help.
Do you have any tips or tricks to get the RAD cleaner and brightener to dissolve better? I use a pump sprayer to apply and these products inevitably don’t dissolve completely, clogging the sprayer tip or hose. Should I try using warm water? Thanks for your help!
Never mix in the sprayer. Mix in a bucket and than transfer to sprayer. Be careful of transferring into the sprayer the bottom inch that may have undisolved powder.
Can I apply the same technique of cleaning a deck to cleaning and restoring a wooden swing set structure also with climbing and covered wooden decking like a fort or tree house?
Yes.
I purchased SuperDeck Cleaner and SuperDeck Brightener and will use on a new Redwood Deck which was installed 5 months ago.
Can I use the Cleaner and Brightener on the same day, or do I need to let the deck dry between these two steps?
Same day.
Thanks! All taken care of yesterday, but got a follow up question.
After cleaning/brightening it was obvious where sap has leached out in some areas.
Going to use Armstrong Clark RedWood Tone in a couple days, and curious if before then could I scrap and sand these areas? Or would that actually unintentionally “seal” the wood by spreading the sap which would prevent the stain absorbing?
Thanks again for being such a great resource!
Just leave as is or use a solvent like lacquer thinner to clean off.
Googling articles on wood cleaning, which I need to do on an area of wood lattice, it’s really concerning to see that the most common cleaner chemicals used , vinegar, bleach and oxyiclean, cause or aggravate rust …So using them could damage the fasteners which hold the lattice together!
Is there another choice of cleaning chemicals I could use to clean and save this lattice, that has not received any treatment for 3 years since built, and is now brown, turning black when wet?
If no other chemical is available, which of the 3 listed above, bleach, vinegar, and oxyiclean, would do the least damage?
I understand from other posts, that you usually just recommend one of your products, but in this case a closer look at what chemicals the products include is urgently needed , and how their impact would be on metal components would compare. If this inquiry is beyond the scope of your forum, please provide links to other sources that could enlighten this difficult issue. Thank you very much
The black is rust from the nails/metal fast\ners. It is not caused by the cleaners but the water. A wood brightener would help to remove the black rust stains.
We just had our decks stained a light gray color with Superdeck solid stain. Of course, now the leaves are falling and after the first rain the leaves have left stains on the newly stained deck boards. This is something we never considered when choosing the color of the stain. How can we safely remove the leaf stains without damaging the very expensive job? Is there anything we can do to prevent this in the future?
Nothing you can do to prevent in the future and the only thing that removes organic stains like this is bleach and that unfortunately, that may lighten your stain color. 1 part bleach to 4 parts water. Apply and rinse after 20 minutes.
What is the best product to prep my redwood clear heart deck boards prior to staining? I would prefer to use something less harsh than oxalic acid. I’ll be finishing with CutekExtreme protection oil.
See here: https://www.deckstainhelp.com/restore-a-deck-cleaner-system-review/
My pergola was built in June 2020. Do I need to clean and brighten before staining with Armstrong Stain?
Yes you have to prep. See this about new wood: https://www.deckstainhelp.com/staining-a-new-deck/
Which deck cleaner and brightener would you recommend for a new deck built March 2019, there’s no graying yet, no stain/seal applied as of yet.
Restore A Deck Cleaner and Brightener Kits.
Hello, I have an Ipe deck that was constructed in the fall of 2018. I let the deck weather over the winter and in the summer of 2019 I used the RAD cleaner and brightener at full strength (1 cup/Gal) with a stiff brush and ended up with a blotchy looking surface and noticed that the surface was somewhat frayed. See first photo. I believe I used too high of strength of cleaner and did not rinse thoroughly in between steps. I went ahead and applied Ipe Oil after the deck had dried and the blotchy look (with patches of white) still remained. See photos two and three. I am now preparing to refinish the deck again this summer. See photo 4 of current condition. The blotchy look has somewhat dissipated due to weathering from snow/rain (I live in northern Illinois). What did I do wrong last year? What do you recommend I do this year? Do I use the RAD stripper, cleaner and brightener or just the cleaner and brightener? I was planning to use less than full strength cleaner/brightener and make sure I rinse more thoroughly this time. I like the Ipe Oil and plan to use it again. Thanks!
Strip and brighten so it is even. Looks like last year you did not remove all the oxidation.
OK thanks for your help! Do I need to use the cleaner in between the stripper and brightener or just the stripper and brightener? I am planning on using the Restore A Deck products.
No need for a cleaner.
Stay away from deck restore I have had an entire deck ruined. It peels within a year and hold moisture underneath causing it to bubble and rot the wood. Google deck restore litigation. Good luck.
Restore-A-Deck products and Deck Restore by Rust-Oleum are not the same thing and are not made by the same companies.
Our deck is 24 years old and we restain about every 2 yrs. with Armstrong semi-transparent stain. Now it has been 3 yrs since it was cleaned (my bad) and the deck surface turns white tennis shoes BLACK on the bottom of the shoe. It is past time to clean deck and I will do so using Restore A Deck Stripper/ Brightener. Is it advisable to stay with the Armstrong product or would better results come with using the TWP 1500? We are disappointed that the stain only seems to last barely two years. I have about 850 Sq. ft. of redwood decking plus posts and handrail. Help!!!
2-3 years is the most you will get with the high-quality stains. What is nice about AC or TWP is that they do not peel and are easier to maintain as needed. You could try the TWP but not sure if the longevity will be much different.
Thank you for the reply. Perhaps the last time it was cleaned we used a Lowes product, so this time I will be sure to use your recommended cleaning product. I’m waiting to have an app’t with a local painter who also uses AC as a stain. I will let you know how the deck turns out.
I have purchased Pittsburgh Ultra Deck Cleaner. It isn’t removing the previous stain spots and is leaving a white chalky type film on the wood spindles and top railing which is as much as I have done. Keep going back and rinsing again. What is going on. I don’t remember having this kind of trouble before. The deck is cedar wood. Also it is not removing dark spots very well. Please help.
Post pictures.
What do I do about the white film on the wood. Can I just seal over it and it will go away.
No picture.
I have a cedar deck that is one year old. I cleaned & treated with Messmer’s uv plus semi-transparent oil-based natural cedar. I am planning on restaining in the next couple of weeks and have a question about prep. I will use the same stain again as we want the natural grain to show. There are no stains and when I touch the decking, you can feel the wood – only a few glossy spots. Mostly it has fading from sun – i live in the mountains in CO. I know we need the stain to penetrate the wood so wondering if cleaning it with an oxi cleaner and then restaining is adequate? I don’t understand what brighteners do and don’t feel it’s necessary. Is cleaning all I need to do for prep and will this be a necessary step every time I stain? Thanks.
Yes you always have to prep when reapplying and yes brighteners are typically needed: https://www.deckstainhelp.com/what-is-a-deck-brightener-and-why-use-one/
Will outdoor wood cleaners, like Thompson’s 3 in 1 Wood Cleaner, or Oxy Foaming Action Exterior Multi-Surface Cleaner damage a lawn? I am looking at cleaning (and sealing) a used outdoor wooden swing/play-set in our backyard. (It isn’t necessarily “dirty, but the wood is somewhat worn/weathered, and needs to have something applied to protect it for the future.)
We acquired this “used” from a family member for our grandkids, and it needs to have a good wood sealant applied to it. Basically all wood cleaning/prep products suggest using a cleaner prior to applying wood sealants…
Thanks
The cleaner should not harm the grass but make sure to saturate the areas when done with water.
You recommend using sodium hydroxide deck cleaners but not bleach. You know deck cleaners that use that are pretty much super strong bleach don’t you? SH deck cleaners will do every bit and more of the damage bleach will if used improperly.
Sodium hydroxide is not used in deck cleaners but used in a stain stripper and is not even close to bleach. The main ingredient of bleach is sodium hypochlorite.
I have a relatively new deck 4yrs old; that was stained 3mos after being built and once more 2 yrs ago. not bad on dirt and algae (south facing deck).. Should I use a std restore a deck clearer and power wash for best results.. or sand too? Should power wash be so aggressive to remove the old stain? .. or good enough no to leave agreesive line and leave some of the old stain? I’m just doing horizontal surfaces and stairs.
Strip it if switching stain brands and then brighten the wood. You have to remove the current stain.
I am getting ready to apply a maintenance coat of TimberPro UV Deck stain (Canadian waterborne oil/resin semi-transparent formulation) after applying 2 coasts last year on PT pine. The deck is mostly covered, north facing, close the the ocean; there is some algae/staining, but this product is by far the best we’ve ever had. I am planning to clean , but wonder if I should brighten also, before applying next coat.
The manufacturer sells a “clean and brite” product(liquid) but I can’t find out what’s in it, compared to other online products (RAD, Defy) that will ship to Canada ; is it advisable to stick to the same manufacturer’s product line or go with one of your highly-rated products?
Thanks
Never heard or used that brand of stain so we would follow their directions for prep when recoating.
Hello from Canada 😊
Our house in Alberta (harsh winters, lots of snow) came with a 600 sq ft weathered cedar deck, never stained. South exposure, some parts with lots of sun all day, other areas have partial shade in summer (trees). It looks like previous owners used Thompson’s Waterproofer plus, that I see you don’t recommend. I clean the deck each spring with a solution of Oxi-clean as more environmentally-friendly option, but the mildew is getting worse and more difficult to remove. Should I switch to professional cleaning products? Which one would be environmentally friendly?
Also need advice on the following two options we are considering:
Option 1: keeping weathered look as we don’t mind it; which clear sealer would you recommend for protection and mold/mildew prevention?
Option 2: introducing a transparent stain with a very light tint to make cedar look natural, showing wood’s grain (we don’t like dark or solid stains). What prep do we need to do so the wood doesn’t show unevenness of weathering that is present now? Which products do you recommend?
Your advice is greatly appreciated as we never had a cedar deck before.
Thanks,
Yvonne
Prep with this kit: https://www.deckstainhelp.com/restore-a-deck-cleaner-system-review/
As for a clear, try the Dey Extreme Clear. For a stain, try Defy Extreme in Natural Pine.
Thanks! 🙂
Another question: we are looking for a very deep, rich brown (no reddish undertones), semi-transparent stain for our fence (new PT wood) with west exposure; something possibly similar to dark walnut? What product/colour would you recommend?
Thank you,
Yvonne
Try Rustic Brown by Armstrong Clark or TWP Dark Oak.
I’ve got a black locust deck that had been finished with a penetrating oil. The finish did not hold up well in the sun and mold. I cleaned it with bleach based cleaner and power washer. It took 2 days and still left of a lot of black stains. Here are a few questions: 1. Should I clean again? If so with what kind of cleaner? 2. Given that the penetrating oil recommended by the decking company didn’t hold up well, should I try a sealer like Thompson’s or something else?
Strip and brighten for prep. Thompsons is a poor stain and sealer. Look at one of these brands: https://www.deckstainhelp.com/ipe-exotic-hardwood-stain-review/
Thanks! I think I’ve now taken off the old finish it just has some black stains left. Do I really need to strip now or just clean and maybe then brighten?
Cleaning will not remove it. If anything will, it will be a stripper and then a brightener.