EFC38 – Wood Cleaner & Mild Stripper – Covers up to 750 SQ FT

(2 customer reviews)



Product Description

Our Woodrich Brand 2lb EFC38 wood cleaner covers up to 750 square feet of wood. We developed EFC38 to tackle your tough wood deck restoration projects fast. Our unique formula provides the strength necessary to remove most semi-transparent stains and sealers, mold, mildew, and grime. EFC38 is a highly developed dry powder formula that mixes easily with water that allows you greater flexibility, as well as tremendous savings.

Product Includes

  • 1 – 2lb EFC38


If you have questions or need help with your wood restoration project, you can count on Woodrich Brand to provide outstanding professional personalized support by calling us @ 636-288-8512 or emailing [email protected] as well. Also, you can visit our gallery or forum for tips, creative ideas, and support from the Woodrich Brand community.

2 reviews for EFC38 – Wood Cleaner & Mild Stripper – Covers up to 750 SQ FT

  1. Gwenn Dyson

    Easy to use, starts foaming where it’s working. Took off the majority of the stain the first time. There are a few areas that will need a second application. Look forward to doing my other deck with this product.

  2. Anonymous

    I power washed, 2100 PSI, the deck to remove various buildups. I then applies the EFC-38 on 3 x 40 ft. segments with a pump sprayer, waited 15 min., no scrubbing, misting if necessary, and then power washed/rinsed again. On the areas where the water beaded after the first wash (old but protected oil stain) the water penetrated instantly. The wood accepted the new waterborne stain and looks great. Ease of use, one application versus spot second treatments, simple rinsing and the final result offset any small price premium per gallon.

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  • Do I have to apply the brightener immediately after cleaning with EFC-38? What is the maximum time I can wait between cleaner and brightener?

    You can apply the brightener right away after cleaning.  If there are puddles of water, try to broom those off before applying the brightener.  There is no maximum amount of time you can wait, as long as you apply the brightener at some point before you stain.


  • How soon do I have to apply the stain after using the cleaner and brightener? Can I wait a few days?

    Yes, you can usually wait up to about three weeks before the sun will start causing the wood to lost its natural color.

  • How do I remove outdoor wood furniture stain before reapplying new?

    We recommend using either the EFC-38 cleaner and mild stripper to remove outdoor wood furniture stain. Use also the HD-80 heavy-duty wood stripper. Then you would follow with the Citralic wood brightener and neutralizer.

  • Should the wood be dry, damp or wet before applying EFC-38?

    It is okay if the wood is damp (with no puddles) or dry when applying EFC-38.  The cleaner could become diluted if the wood has a lot of puddles.  Wood that is in the direct sun can become hot to the touch.  It is okay to mist the wood with a little water to cool it off before applying the EFC-38.  This will help the cleaner stay wet and active longer.

  • Your products are great! Can I use them to clean my concrete garage floor?

    HD-80 and EFC-38 are both very effective cleaners for concrete and hard surfaces.

    Of course you want to follow all of the same safety precautions as when they are used for wood restoration.

    Citralic Brightener/Neutralizer will effectively remove rust and other mineral stains from concrete.

    For severe concrete stains, you can wet the area and then grind in some of the dry Citralic powder making a thin paste.  Allow that paste to dry on the surface and then rinse away.  Repeat as necessary.

  • Should I remove elastomeric coating?

    I would recommend starting with the sample kit to test for efficacy.

  • Is this done using a sprayer?

    Yes, that is the fastest way to apply.

  • Will this remove paint from aluminum Anderson windows?

    This product will not remove paint that is in good condition. If the aluminum windows are well aged and heavily oxidized, the cleaner may remove some of the surface oxidation. Thus, leaving what looks like either clean or faded areas.

  • Does EFC-38 remove paint?

    No, this product is not an effective paint remover.

  • Will EFC-38 remove sikkens cetol srd stain?

    No, HD-80 would be a better choice for that finish removal. Sample test kits are available to help you determine the required product dwell time.

  • Would this work for cleaning logs in a Log Cabin?

    Yes. EFC-38 is a perfect choice for restoring the weathered exterior of log cabins.

  • Our pressure washer can be used to apply cleaning products at low pressure. Can this product be used with a pressure washer if mixed right?

    This product is designed to be mixed with water and then applied at “full strength” using a pump-up garden sprayer. Injecting the solution using a power washer would dilute the product too much.

  • We stained our deck last summer, will this take the stain off? That's what I'm wanting it to do...

    It depends on what type of stain it is. This product will remove most true oil based stains and sealers. We also offer a Heavy Duty Stripper called HD-80, for solid stains and other hard to remove finishes.

  • Can HD-80 be used on other surfaces?

    HD-80 can be used to clean concrete, vinyl siding, brick, Trex and PVC.  You can also use EFC-38 as a safe roof cleaner

  • Is EFC-38 harmful to humans or pets?

    Not harmful for pets if you use common sense and handle it properly.  EFC-38 was designed in order to be safe for the user and for the environment.

  • Will EFC-38 harm plants or grass?

    Nope, unless they are extremely delicate such as lacy ferns or soft petel flowers and they are in direct sunlight.  In such cases the water causes the sun to burn the plants.  Shake the excess water off to prevent burning.

  • Do I always have to use a Brightener/Neutralizer after I use EFC-38?

    No, EFC-38 finishes off close to neutral.  As long as you rinse well you do not have to use a neutralizer.  You may wish to brighten that extra bit to help make your work stand out among the competition.

  • The wood has turned dark after treatment! How do I get it to lighten up?

    Use Citralic Brightener/Neutralizer in order to brighten up the wood.

  • Will EFC-38 remove mold & mildew or should I add bleach?

    In most cases EFC-38 will easily remove mold and mildew.  You should see it work drastically when it comes in contact with mold or mildew.   If there is an extreme build up of mold and mildew you can apply additional EFC-38 to fully eradicate the infestation. (NEVER mix bleach with EFC-38)

  • What if I can't see the wood under a solid color stain? How do I tell if EFC-38 has gone through all the layers?

    If you are working on a solid color stain you should be using HD-80.  EFC-38 is only going to make the finish nice and clean.

  • How long does EFC-38 take to work?

    It is going to do it’s job in about 15 min.  If you have a stubborn finnish you may allow for additional dwell time keeping the surface wet.

  • How do I know when EFC-38 is working?

    The coating will change color and any mold or mildew should activly fizz up and turn white.  Use a scratch test to determine when the existing finish has been fully emulsified and is ready to strip.

  • What if I mix too much and have more than is needed for the job, will any left over EFC-38 go bad?

    Use EFC-38 within a couple of hours from the time of mixing.  Beyond that, it loses its effectiveness as a stripper.  You should also take care to keep the powder dry when you store it.  The shelf life of the dry powder is 6 months so be sure to keep your supply fresh.

  • How much EFC-38 should I use per gallon?

    Mix 8 oz (1/2 LB) per gallon of water for full stregnth.  In dry measure that is about 2/3 cup.  You can then dilute up to 4 to 1 with water depending on the job at hand.

  • What finishes will EFC-38 remove?

    EFC-38 works on removing oil-based finishes such as TWP, READY SEAL, WOLMAN, OLYMPIC, CUPRINOL and other semi-transparent finishes.

  • Is EFC-38 different than a percarbonate cleaner?

    EFC-38 contains a percarbonate, but is not like a straight percarbonate cleaner.  EFC-38 was designed to remove aged and failing oil based wood finishes.  It will perform many jobs that a percabonate cleaner can not do.  EFC-38 is safe to use and makes an excellent tool for wood restoration.