DEFY Extreme Composite Deck Sealer (DEFY Composite Deck Sealer) is an extremely durable clear finish that helps to prevent the return of black stains on composite decks and protect against the damaging effects of water, fungi, and UV radiation on composite wood surfaces. This V.O.C.-compliant, water-based product is fortified with zinc nano-particles, a natural deterrent to recurring black algae stains. There are over 30 TRILLION of these zinc nano-particles per square inch that protect your composite wood from the sun’s harmful UV rays, protecting your composite deck from color fade, moisture, and fungal growth.

DEFY Extreme Composite Deck Sealer contains zinc nano-particles that reflect the damaging ultraviolet rays from the sun. When you reduce the size of these zinc particles down to the nano level, they become invisible to the naked eye. These nano-particles are distributed at a rate of over 30 trillion per square inch of surface area to provide protection from the sun, much like in sun blockers and sunscreen lotions. This will not only help to prolong the graying, but, as the nano-particles are highly resistant to mold and mildew, will enable you to retain the natural color.

DEFY Extreme Composite Deck Sealer is available in a crystal clear finish and is designed to be used on exterior wood surfaces including:

composite decks
all natural wood surfaces

Before using DEFY Extreme Composite Deck Sealer, clean the deck with DEFY Composite Deck Cleaner. This will generally clean and restore previously treated surfaces to their original appearance. The surface should be recoated when graying initially starts to appear.

QUICK FACTS

Coverage Rate: Approx. 200-300 sq. ft. per coat. (For 2 coats 100-150 sq. ft.)
Available Sizes: 1 gal. containers
Application Temperatures: Minimum 45° F
Application Method: Pump sprayer, airless sprayer, pad applicator or brush
Dry Time: 2-4 hours (above 45° F), allow 24 hours before using
Cleanup: Soap and water

Warning: This product can expose you to Ethylene oxide, which is known to the State of California to cause birth defects or other reproductive harm, and Cumene, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov

Click here for Product Data & Safety Sheets.

DEFY Extreme Composite Deck Sealer is an extremely durable clear finish that helps prevent the return of black stains on composite decks as well as protect against the damaging effects of water and UV radiation on composite wood surfaces. This water-based product is fortified with zinc nano-particles, a natural deterrent to recurring black stains. It protects your wood by blocking out the sun's harmful UV rays, helping protect your composite deck from fading, graying, and color loss.

LIMITATIONS: This product is not designed for use on new, composite lumber. New, composite lumber does not typically need to be sealed and is not porous enough to accept this type of product. Over time, as the surface begins to weather and starts to absorb water, it can be sealed with this product. To ensure proper absorbancy, do a water test per label instructions below.

SURFACE PREPARATION

STRIP: Do not use DEFY Extreme Composite Deck Sealer over painted or varnished surfaces. These surfaces must be stripped prior to application of the product.

CLEAN: Composite wood surface must be clean, porous, and dry before applying DEFY Extreme Composite Deck Sealer. Use DEFY Composite Deck Cleaner to remove mildew stains, graying & other foreign matter that might block surface pores and interfere with product penetration. Rinse thoroughly with garden hose or power washer (maximum 1200 p.s.i.).

APPLICATION

WEATHER CONDITIONS: Surface and air temperatures should be between 45°F and 95°F. Avoid application in direct sunlight. Although surface may be slightly damp, do not apply to wet or water saturated surfaces, or when rain is expected within 12 hours.

WATER TEST: After allowing the surface to thoroughly dry from cleaning, sprinkle a few drops of water on the surface. It should begin to penetrate within a few seconds. If it doesn't, then don't apply the finish. The composite lumber is either not dry enough or not porous enough to accept the finish correctly. Test a small area before starting general application to assure desired results.

MIX WELL: Shake or stir contents before and periodically during use. Do not thin product.

PROTECT ADJACENT AREAS: Use plastic, cardboard, and/or drop cloths to protect all adjacent non-targeted surfaces such as siding, windows, masonry, plant life, etc. from overspray and runoff. Immediately remove overspray from non-targeted areas with soap and water. Overspray that is allowed to dry will be difficult to remove; dried product cannot be removed from concrete and masonry.

USE THE RIGHT EQUIPMENT: Hand brushes should be high quality nylon or polyester. A pad applicator or deck brush may also be used. For large areas, a pump-up or airless sprayer may be used. If using an airless sprayer, use tips between .011 and .015, and use the lowest pressure that achieves a uniform spray pattern to minimize fogging and overspray. When spraying, always back brush to ensure a uniform application, and to break the surface tension of the composite material so the stain will penetrate deeper and last longer.

DECKS: DEFY Extreme Composite Deck Sealer can be applied to all natural and composite wood surfaces. Start by applying DEFY Extreme Composite Deck Sealer to the railings, benches, and undersides of upper level decks (only one coat is required on undersides). Once underside is treated, immediately brush out all overspray, drips, etc. Treat horizontal surfaces last. When treating horizontal composite deck surfaces, only a single coat of material is required. For natural wood surfaces, apply two coats of sealer, waiting approximately 10-20 minutes between coats. Brush product into surface working out all drips, puddles, or areas of overspray before product dries. Do not over apply finish. To avoid the possibility of peeling, apply only as much finish as the deck can easily absorb. A sure indication of over application is a shiny appearance. Complete entire sections or to a natural break before allowing to dry. Never break in the middle of a board. Thoroughly coat the ends of boards to prevent water penetration.

VERTICAL SURFACES: Start from the bottom and work up. Treat the entire length of a board before moving up. If necessary, brush or feather in to avoid lap marks. Brush in product before it dries and work out drips, runs, or overspray.

DRY TIME: To touch, 2 to 6 hours depending on temperature and humidity. Allow 24 hours for deck to completely cure before using.

CLEAN-UP: Clean tools and equipment immediately after each use with soap and water.

COVERAGE: One gallon of DEFY Extreme Composite Deck Sealer will cover approximately 200 - 300 sq. ft. per coat, depending on wood texture and porosity.

PRECAUTIONS

May cause an allergic skin reaction. Keep out of reach of children. Avoid breathing fumes, dust, mist, spray, vapor. Wear eye protection, protective clothing, and protective gloves. Dispose of contents/container to comply with applicable local, national and international regulation.

FIRST AID

IF INHALED: Move the affected person away from the contaminated area and into the fresh air. If symptoms persist, seek medical advice. SKIN CONTACT: Wash off immediately with soap and plenty of water. Obtain medical attention if irritation persists. EYE CONTACT: Immediately flush eyes thoroughly with water for at least 15 minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Seek medical attention if irritation persists. INGESTION: If swallowed, rinse mouth with water (only if the person is conscious). Do NOT induce vomiting unless directed to do so by a physician. If the person is fully conscious, make him/her drink water. Never give an unconscious person anything to drink. Immediately call a POISON CENTER or doctor/physician. For additional information for this product, consult the Product Data Sheet or Safety Data Sheet available at defywoodstain.com.

KEEP FROM FREEZING
VOC CONTENT < 250 g/L

FAQs

Name: DEFY Composite Deck Sealer
Brand: DEFY
SKU: 300416
Price: 53.52 USD
Availability: InStock

When you've been making wood stain products as long as we have, you get used to answering similar questions. So we've gathered some of our most frequently asked questions for you here.

If you can't find the answer you're looking for below, we have more FAQ's here. Our blog is also has helpful resources and videos designed to help homeowners with every type of wood stain project.

CLEANING & PREPARATION

Can I pressure wash my deck until it's clean? Or do I need a wood cleaner?

The answer varies based on the current condition of your wood. If you do decide to pressure wash your deck, use pressure between 1,000 or 1,200 psi. Also be sure to work with the grain and never against it, as it will cause damage to the wood's surface and splinters.

If you don't have easy access to a pressure washer or have to pay to rent one, we recommend DEFY Wood Cleaner instead. It's easy to use and will clean deep into the wood, which makes your next coat of wood stain more effective and more beautiful.

Does the wood need to be completely dry before I apply the stain?

If you are using an oil-based stain, definitely. You can use DEFY stains, which are water-based products, even when the surface is slightly damp.

With oil based stains, wood must be bone-dry before you can begin staining. However, DEFY stains are water-based, so you can use them even when the surface is slightly damp.

I constantly have mildew growing on my deck. Why does it grow there and how can I stop it?

If your wood is in constant shade and moisture is present often, you might never be able to prevent mold and mildew completely. However, you can improve your chances with a professional-grade synthetic stain (like DEFY Extreme Wood Stain) compared to an oil based stain. Oils are a critical food source that mold and mildew feed on, so by eliminating the oil from your deck it's less likely to return.

How do I clean mold and mildew off of my deck?

Use a diluted bleach solution to clean it off. Mix DEFY Wood Cleaner with water (five parts water to one part cleaner), spray it on, let it set for five or ten minutes, and rinse it off. The mildew should die off in the process. To prevent it from coming back, stain your deck with DEFY Ultra Wood Stain for the ultimate mold and mildew protection.

TOOLS & APPLICATION

Is there a particular brush I should use with DEFY wood stains?

The best tool for the job varies by the type of job. For decks, the quickest and easiest method to apply DEFY deck stain is with a "car wash" brush. Some have handles and some are handheld and they can be found in most home improvement stores.

Can I use a paint roller to stain my wood?

You can, but we don't recommend it. Paint rollers were designed for thick paint, not water-based wood stains. Using a roller will often simply push the stain around on the surface and not force it into the pores. It can also leave a stipple effect in the finish when the stain has dried.

How do I know if I applied enough stain to my deck?

When using a semi-transparent DEFY stain (Essential, Extreme or Ultra), only apply as much stain as the wood can absorb easily. If any puddles form during your staining process, be sure to brush them out to disperse the puddle.

DEFY Essential and Extreme stains have a flat finish, so if a gloss has formed on the surface the stain has been over-applied. Over time, it will be likely to peel. Even after two coats, your deck should still have a flat finish.

With DEFY Ultra stains, two coats will result in a satin finish. One coat will appear flat. A glossy appearance, would still indicate an over-application.

What’s the best time of the year to stain my deck?

This can vary slightly based on where you live, but typically the Spring and Fall offer the easiest conditions to work in. Below 80° is ideal and regardless of the season, it's best to stay out of direct sunlight because it can cause the stain to dry too quickly.

CARE & MAINTENANCE

Do I really need to stain my deck or can I just let it weather naturally?

We know it's easier NOT to stain your deck, but we've designed DEFY wood stains to be the next easiest thing! Leaving your deck untreated, means you'll be building a new deck in a few years and that's much more expensive than protecting the one you've already got.

Your home's outdoor spaces are extension of your life and they deserve both beauty and protection. DEFY wood stains will help protect your investment from UV rays, stains from mold and mildew, and moisture. Restore and extend the life of your deck with DEFY.

My deck is stained, but it's starting to look weathered. What should I do to help the wood without staining again?

That’s easy! Clean your deck with DEFY Wood Brightener, which will give it a boost in appearance. You can also apply one, light coat of new stain once you've brightened.

My composite deck that is already beginning to gray out. Can I use stain on it to keep it looking new?

Yes, DEFY Composite Deck Sealer works well on most composite wood surfaces. Just follow all of the directions in the same way that you would if you were staining regular wood and you'll love the results!