Last Updated on December 1, 2022 by chuckm
Composite Wood Decks with Defy Composite Waterproofing Sealer and Cleaner
Many homeowners are going with the composite type decks these days. Composite decks are usually made from a material containing some wood, plastic or another type of durable products. Though composite decks can be marketed as “maintenance free” they really aren’t. Anything that is exposed to the elements will degrade over time if it is not protected.
The good news is that a composite deck can be protected just like a wood deck. Using a stain like Defy Composite Sealer that will penetrate the dense composite material is the key.
The surface can be cleaned and treated with a sealer to block out the sun’s damaging UV rays and moisture. When these types of decks are not protected they can gray out, warp, split, and collect mold and mildew.
Before staining a composite deck it first has to be cleaned. A good composite deck cleaner Such as the Defy Composite Cleaner should be applied onto the surface. The composite deck can then be pressure washed or scrubbed with a stiff brush to remove any dirt, grime, graying, or mold/mildew. Once the surface is clean it can air dry for a day or so.
Be careful not to use just any type of wood sealer on a composite deck. The material is very dense and most stains will not penetrate it very well. A sealer like Defy Composite Sealer is specially formulated to penetrate very dense hardwoods and also works very well on composite decks. It will dive into the surface of the deck and help shield against the sun and unwanted moisture.
Apply Defy Composite Deck Sealer using a brush, roller, or sprayer. Apply one board or section at a time. Apply only as much Defy as the composite will soak up. Wipe or back brush any excess stain so as to not leave any puddles, runs, or drips.
Maintaining a composite deck is made easy with Defy. Keep your composite surfaces looking like the day they were installed and enjoy them for many years to come.
Defy Composite Deck Sealer can be used on all composite wood brands such as: TREX, Fiberon, Azek, TimberTech, etc. It should not be used on solid plastic decking.
Ask Defy Stain Questions in Comment Area Below
Can this be applied in the fall with Temps in the day around 50 and the nights drop to around 30?
Yes, but it cannot drop below freezing the first night.
Can this product seal old uncapped composite decking?
It seals old composite decking.
I have a Trex Railing system that has lost its luster, and has a whitish “film” on it. Will Defy restore it so it looks nice again?
The Defy sealer does not enhance or change the color.
Is there are product that would seal and possibly, say darken a faded tan to more brownish?
No, they will not darken the composite.
Can a stain be added to the sealer?
No, that is not possible.
Will this product restore some of the faded color?
No, it will seal the wood but it is not possible for a clear sealer to “enhance” the color.
Deck is approximately 500 sq. ft I applied gallon and a half. I left no “holidays in application” there are no shiney or white spots. I’m going with my “gut” will apply second coat. It took three days to clean without power washer. Is there a possibility I applied to thin? Thanking you Happy Sunday
Yes, you could have applied too thin.
Can I apply second coat after first drys complete
Probably would be over kill do that and it may not penetrate fully.
Can this be used to seal the cut ends of composite boards?
Sure.
can this be used on Timber Tech composite decking?
If composite then yes.
Can this product be used on Eon composite decking?
If composite yes, not if it is 100% plastic as most EON is.
Sorry trex deck
I just power washed my tree deck and looks great now to apply defy sealer, is it okay not to use cleaner as it looks good no black spots
Yes that is fine.
I bought this product and applied around half a gallon on my first coat and have multiple white spots. How can I fix this?
Did you buy this from us? We do not see any orders in your email address.
Hello, I purchased two bottles off amazon of your product.
thanks,
tyler
We do not sell on Amazon. Please contact the manufacturer directly for assistance. Saver Systems
I have Fiberon Professional Decking, 10 years old, can I use your product?
If it is composite, then yes.
Can you apply on deck during hot and humid days? Is it best to make sure there’s not rain during first day or so after applied?
Deck temp needs to be below 90 so it does not flash dry. It can take rain in 6 hours after it dries.
How long will the application last?
A couple of years is normal.
Last Fall I power washed my composite deck before applying product with a sprayer and deck brush, careful to follow directions. I have some patchy areas of ‘white’ which is very noticeable on dark brown deck boards. Cause?? How to remedy?? Disappointed in final appearance..
It could be many things. It could be due to the prep, the wood itself, or over application of the sealer. Hard to say what the reason is or how to fix without more details. Do you have a picture?
I also have some white areas from the over application, this was applied with a sprayer, and is just dry for 24 hours. Is there a remedy?
It may go away once fully cured in a few days or week. I would wait and see.
Can you add Sherwin Williams shark grip to this product
No, you cannot add a grip to this sealer.
I used the Deyf composite cleaner and then used your deyf composite clear sealer. I am still seeing white specks on boards and I think I need to strip it down now and used some solid stain to restore to an acceptable look. What do you recommend to strip off the Defy sealer?
Use the Defy Stain Stripper.
do you sell in 5 gallon containers?
Mo, only gallons for this product.
How much would be needed for 2250 linear feet?
We would need a sq. footage number, not linear.
Ok how much For 1700 square feet for composite sealer
Around 8 gallons: https://www.deckstain.com/defy-composite-deck-sealer-detail.html
How many square feet per gallon?
About 150 Sq feet per gallon.
where can I buy the sealer? Local stores? Dubuque Iowa area
We sell only online from our website.
Is the Composite Decking Sealer the same as the Brightner? I was told you could purchase a concentrate brightner to enhance to surface shine. Sounds like the Sealer is the same product. Can you confirm?
Thanks,
Mike G
Hello, not they are not the same, not even close. A wood brightener would not enhance the shine either.
CAN DEFY SEALER BE USED ON TREK CAPPED DECKING?
boards capped on top and sides but not bottom want to seal bottom
As long as the bottom is composite and porous for the sealer to soak in, then yes.
Is compositedesck the same as a trek deck
Not all Trex products are composite but some are. For the sealer to work, the decking must be porous.
[quote name=”Charles Cooper”]Looking to purchase your product for the composite decking cleaner and sealer in the UK, can you advise any supplier that can help.
Regards
Charles[/quote]
I am sorry but there are not any dealers in the UK.
Looking to purchase your product for the composite decking cleaner and sealer in the UK, can you advise any supplier that can help.
Regards
Charles
[quote name=”Vivian Vradenburg”]How many square feet will 1 gallon cover on a new composite decking. Defy Composite Deck Sealer[/quote]
About 150 sq feet per gallon.
How many square feet will 1 gallon cover on a new composite decking. Defy Composite Deck Sealer
[quote name=”Jerry Rozendal”]is your sealer available in Canada?[/quote]
It is not. We ship there from our website.
is your sealer available in Canada?
[quote name=”Vicki Brandt”]Just finished cleaning our composite deck with Scott’s Outdoor Cleaner with Oxy Clean. Looks pretty good. Thought there might be a better solution than scrubbing and power washing every year and found your product. Should we redo the cleaning process with your cleaner before applying the composite sealer or is the Scott’s clean ok?[/quote]
Probably will be okay as long as it is clean.
Just finished cleaning our composite deck with Scott’s Outdoor Cleaner with Oxy Clean. Looks pretty good. Thought there might be a better solution than scrubbing and power washing every year and found your product. Should we redo the cleaning process with your cleaner before applying the composite sealer or is the Scott’s clean ok?
[quote name=”Ron Moody”]Is there a store in New Hampshire that we can purchase this product?????[/quote]
Sorry, but we only sell on our website.
Is there a store in New Hampshire that we can purchase this product?????
[quote name=”Mrak Richardson”]My trex deck is flaking, and damaged. I want to put outdoor carpet over it. If I put your sealer on the trex before glueing the carpet down do you think it will be the best product for what I want to do?
Thanks
Mark[/quote]
It will not “fix” your flaking Trex if that is what you mean. Since you are putting carpet on, the only thing the sealer would help with is mold prevention under the carpet.
My trex deck is flaking, and damaged. I want to put outdoor carpet over it. If I put your sealer on the trex before glueing the carpet down do you think it will be the best product for what I want to do?
Thanks
Mark
[quote name=”Debbie”]We have read many good reviews on your product and would like to know how can we tell if we have a composite wood deck or a solid plastic deck as I see your product should not be used on a solid plastic deck? We purchased our home 2 years ago, it was built 8 years ago, and we don’t have any idea about the deck floors or steps. We just sealed our wooden deck railings and now the deck floors and steps (which are either composite wood or plastic)look so faded and dull. We would like to brighten them up also. We appreciate your help.
Thank You,
Debbie[/quote]
It is obvious when all plastic as it looks like vinyl and it is not porous.
We have read many good reviews on your product and would like to know how can we tell if we have a composite wood deck or a solid plastic deck as I see your product should not be used on a solid plastic deck? We purchased our home 2 years ago, it was built 8 years ago, and we don’t have any idea about the deck floors or steps. We just sealed our wooden deck railings and now the deck floors and steps (which are either composite wood or plastic)look so faded and dull. We would like to brighten them up also. We appreciate your help.
Thank You,
Debbie
[quote name=”mary gill”]Will Defy sealant work on Geo-Deck composite decking?[/quote]
As long as it is a composite and not 100% plastic, it will work.
Will Defy sealant work on Geo-Deck composite decking?
[quote name=”LES WIEBE”]Hi. where in Winnipeg, Canada can I purchase this composite deck sealer?[/quote]
No dealers in Canada but we can ship to you.
Hi. where in Winnipeg, Canada can I purchase this composite deck sealer?
I would like to order Defy Sealant for composite decks, but I can’t figure out how to do it on-line. Please advise.
[quote name=”Tom”]What is coverage for a gallon of deck sealer? Can’t find mention of it in literature.[/quote]
About 150-200 sq. feet per gallon.
What is coverage for a gallon of deck sealer? Can’t find mention of it in literature.