EFC-38 Wood Deck Cleaner Review 4.2/5 (2)

by Deck Stain Help
EFC38 Review

EFC38 Review

EFC-38’s unique formulation provides the strength necessary to clean gray wood, mold, mildew and heavy accumulations of grime. EFC-38 contains sodium percarbonate and additional surfactants that boost the overall effectiveness. EFC-38 was designed to clean and prep all exterior wood.  EFC-38 is safe to use and makes an excellent tool for wood preparation prior to applying a wood coating.

EFC-38 Wood Deck Cleaner Scores (1-10)

Removal of Graying, Dirt, Grime: 9

– EFC-38 is very effective at removing graying wood cells and algae. The wood surface looked 90% or better when done with the cleaning. All algae and mold were removed from the fence.

Cost Per Square Foot: 10

– The cost to clean the 1000 square foot fence was less than $.04 a foot. The powdered formula makes 5 gallons of liquid wood cleaner for 2 pounds of EFC-38

Removal of Old Stain: N/A

– EFC-38 is designed to clean wood and will strip older oil based decking stains. We did not rate it as a stripper since it is not labeled or designed to remove all wood deck stain coatings.

Ease of Application: 8

– EFC-38 mixes with water at the rate of 6-8 oz per gallon. We mixed the entire 2-pound container in 5 gallons of warm water. The EFC-38 dissolved fairly easy into the water. The product was applied with a pump up sprayer and applied to a fence. Coverage was close to 200 feet per gallon. A pressure washer was used to rinse off the gray wood and dirt.

Final Appearance of Cleaning: 9

– The fence was restored to like new condition. EFC-38 does need to be neutralized with the Citralic Wood Brightener. It is normal to neutralize wood deck cleaners and the final appearance was excellent for an application of a stain.

Overall Score for EFC-38 Wood Deck Cleaner: 9

– EFC-38 is an excellent cleaner for prepping your exterior wood, deck, or fencing. Performs as described and is very cost effective. Highly rated!

Product Information:

Where To Buy: Only Online
Product Type: Powdered Deck Cleaner Concentrate
Available Sizes: 2 lb. Container Makes 5 Liquid Gallons, 10 lb. Container Makes 20 Liquid Gallons
Application Temperature: 45-95 F
Coverage Per Gallon: 100-200 sq. ft
Application Tools: Scrub Brush, Pump Sprayer
Manufacturer: Extreme Solutions

Test Deck Stats:

Location of Deck: Texas
Fence Wood Type: Cedar
Fence Square Footage: 1000
The condition of Deck: Heavily grayed.
How Much Product Used: 
One 2 pound container. Retails for $19.99

*All products tested and results are from our experience. We offer no guarantee of similar results. Take in consideration that results may differ due to different wood types, exposure to UV radiation, and natural weathering.

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newest oldest

Where can I find a good deck cleaner and brightener that I don’t have to get online!!! My husband has already started sanding the deck and will need cleaner and brightener in 2 days!!

Rolf Marsh
Rolf Marsh

We just painted our house; the deck is Doug Fir 2 x 6 which is attached to the house. Will this product affect the paint? If so, how long do we have to wait for the paint to cure so it won’t affect the paint?

Alicia Smith
Alicia Smith

Where can I find this cleaner?

Tom D'Muhala
Tom D'Muhala

Please send an MSDS for EFC-38

Thank You,

Tom D'Muhala