Apply Polyurethane to A Deck? 4.8/5 (33)

Wondering what would be the best polyurethane for a screened in Gazebo pressure treated floor?

Is oil base stain better than water base? Does it last longer?

What can I put on top of Behr’s paint/stain to prolong life in uncovered portion of porch? Thinking some type of polyurethane.

my deck is painted, leaves are falling and staining the deck. is there anything that i can go over the paint that will stop this? maybe polyurethane?

I had just finished powerwashing, sanding, and applied semi-transparent waterproof stain. Now thats its all done; Ive come across think about what to do with the cracks and small splits in the wood. I was thinking about polyurethane it. Now I’ve learn its not a good idea, any suggestion as to filling in the small cracks and splits to having a smoother surface?

i am using superdeck semi transparent heart redwood stain on my 1 year old never touched pressure treated deck as i have seen nightmares about using Behrs.

We have a very large deck, about 50’x10′ with railing. Last summer we cleaned the deck and added a water protectant. As the sealer dried we noticed several white spots, these continued to increase as time went on. I sanded off the white spots and tried to re-stain them. This is when I noticed the stain the former owner used had polyurethane in it. We have sanded the entire deck but I want to be sure I avoid having any further issues. I’m assuming I should pressure wash the deck again just to be sure it’s clean before I stain it. Is there anything else I should do?
Thanks!

My deck was painted by the previous owner with a solid stain that is now peeling and flaking. I am thinking I need to sand it all off and cover with semi-transparent stain as has been suggested. However, the nails used on the deck are not stainless steel and they rust if exposed to the air. Will the semi-transparent stain sufficiently cover the nails so the will not rust? I am worried that it will not, and I will have a deck dotted with hundreds of rusting nail heads.

I have a cedar deck that gets tons of sunlight. I tried all kinds of deck stains and even teak oil. The best product I found was something called a Super Deck.

I rented deck sander at the hardware store. Used 80 grit followed by 120. I use an oil base stain that has to be reapplied about every three years because of a south exposure…nothing will last forever on a deck, if you want to "poly" it, I would use a high quality spar varnish used on boats, but again, you will have to sand it back down and re apply at some point.

This was great information. I did what you said not to do and the results were exactly what you said would happen. Peeling and blister and now it's to the point the paint I used completely peeled and blistered away from the wood. Now I can just see the bare wood. This was a costly mistake since polyurethane is expensive.

I have used an Exterior Solid Stain on a Pine Floor INSIDE. I'd like to put a top coat of some kind on it. Since this is not exposed to the elements, would a polyurethae coat work?

Is there any kind of a deck coat/sealant that prolongs the life of the coating, or wood? We are considering redoing our deck with the Poly resin material/poly wood that lasts for life. But I thought I had heard somewhere that there is now some type of a deck coat/sealant that is somewhat similar to the long life of the poly material, so there is not a need to recoat as frequently. Please let me know; maybe I am way off base! Thank you.

Hi , We installed a post and beam covered porch about 10 years ago using western red cedar beams and rails. We were told to just use a varathane clear oil based Exterior finish to seal and protect the wood. It looked fantastic at the time, but the last couple of years, it started to look like your picture in the article above. We tried for nearly a week to sand the wood back to pre-seal, and it just wouldn't come off. So I went to the paint store and they sold me a Benjamin Moore Exterior Stain Remove, which I tried on a portion of the post and beam/railings. It turned the wood dark in the places where there was no stain left, and bubbled up some of the remaining stain. It was a mess. We let it dry and tried to sand it again, but it just will not come back to the same colour. So we thought that perhaps if we used the same product to just go over the wood, it would blend in and look ok….it is still wet, but it looks like it isn't going to work. I am afraid that our only option is going to be to paint the post and beam, which I really don't want to do as it is beautiful Red Cedar. Can you help with some advise?

Is there any outside deck stain that looks shiny or wet

We recently had our wood deck stained and sealed. The company we hired said their seal is mixed in with the stain and is applied in one process. I'm just curious if that sounds right? Also, now that they are finished with our deck, should water continue to soak right into the wood when it rains or should there be more of a beading of the water on top of the deck?

I put a clear coat of stain to my cedar deck and it left a yellow look where the stain overlapped. How do I get rid of the yellow look.

You mention several times Do Not use poly but you never mention what you should use. Would you recommend an oil base product such as; Sherwin Williams semi transparent cedar deck stain.

I recently installed new T&G pine on a covered porch and used a chocolate covered weatherproof transparent deck stain

My wife is wanting to put a coat of polyurethane over the stain; not so much for the gloss finish, but rather to protect the wood itself from additional stains (melted popsicles, spilled wine, etc.) Im not convinced this is the best approach, as it may cause the porch to be slippery when wet. I also thought that the stain itself would provide a decent barrier so long as I continue to take care of it each season.

Thoughts on applying this finish over the stain?

Hi there. I have applied a dark varnish to my wooden deck, but it hasn't come out as dark as I wanted it. Is there any stain / tint I can apply over the varnish to make it darker?

Is there a difference between urethane and polyurethane? This can (solid color composite deck stain) only refers to urethane, but the clerk called it polyurethane. She also claimed it could be used for conventional wood decks and could be painted over with latex paint. This product was applied to a wood deck previously painted with latex. INGREDIENTS: Nepheline Syenite, Long Oil Alkyd Resin, Exempt Mineral Spirits, Long Oil Alkyd, Mineral spirits, Urethane Alkyd resin, Xylene, Proprietary Solvent and Ethylbenzene. This product was discontinued due to "harmful formulation" and deep discounted. I was told it can be thinned with standard paint thinner, and if a coarse surface was desired sand can be added. I expect it to exhibit better longevity than latex coating, which would peel in areas after a year or two.

I want a wet look or shiny finish to our cedar deck. How can I archive this that will hold up. Obviously poly sounds like a no go..any other sealer to put ontop of the stain or something I can use. We are staining it a dark brown and its a brand new cedar deck. Thanks.

i live in a rainy climate and the stain wears off on the horizontal parts of the deck. i'm sanding and restaining today, but wondering if i need to sand it first, is that necessary do you know? i'm using a tinted stain

Does an older deck need some sort of preparation before staining?