How long Thompson’s Water Seal lasts depends on whether you mean in the can (shelf life) or on your wood/concrete (applied lifespan):
For most Thompson’s WaterSeal products, just one coat is required. However, if you desire a deeper color (with tinted formulas) or want to ensure maximum absorption on highly porous wood, apply a second coat while the first is still wet (within 2 to 4 hours).
Thompson's Water Seal is an affordable, excellent short-term water repellent for bare wood and masonry. However, it lacks UV protection and usually fails within 1 to 2 years. For high-traffic areas like decks, many contractors and DIYers find it is not worth the frequent reapplication or the prep work required.
A 5-gallon bucket of Ready Seal covers approximately 625 square feet for a standard coat. Depending on the porosity of your wood, a single gallon will treat about 125 to 150 square feet.
Yes, you can absolutely use too much Thompson's Water Seal. Over-application causes the excess sealer to sit on the surface instead of absorbing, leading to a sticky, tacky mess that ruins the look of the wood or concrete.
Staining is generally better for the longevity of your deck. While a clear water sealer only protects against moisture, stain combines that same water resistance with pigments that block the sun's UV rays, which prevent wood from cracking, graying, and splintering.
Thompson's® WaterSeal® Waterproofers and Wood Sealers penetrate the wood so that even after the beading is gone, the waterproofing protection lasts.
Sealcoating a 1,500 sq. ft. driveway typically costs $450 to $1,500 total. Professional services average $0.88 to $2.10 per sq. ft. for both materials and labor, while a DIY project drops material costs to roughly $0.15 to $0.40 per sq. ft..
The best time of year to seal concrete is late spring to early fall. During this window, days are dry, and temperatures are consistently between 50°F and 85°F. Mild, dry conditions allow the sealer to bond properly and cure without bubbling or peeling.
Yes, Ready Seal recommends a two-coat application for the best results and color consistency. The first coat penetrates deep into the wood to protect it, while the second coat evens out the porosity and provides a uniform appearance.
Top-rated deck sealers depend heavily on your climate and deck material. Industry professionals and testing sites consistently rank TWP 100 or 1500 Series as the best overall for wood, while Seal-Once Marine Premium tops waterproofing and eco-friendly categories.
Make sure that surfaces are dry and free of mildew, leaves and debris before waterproofing, staining or sealing. The ideal outdoor temperature to apply most protective coatings is between 60-65 degrees Fahrenheit.
Professionals select concrete sealers based on the specific exposure of the slab. They choose penetrating sealers (like silane/siloxane) for outdoor areas requiring salt resistance, acrylics to enhance decorative concrete, and heavy-duty coatings (epoxy or polyaspartic) for high-traffic interior or garage floors.
The best applicator for Thompson's Water Seal is a combination of a pump-up garden sprayer and a synthetic-bristle brush or roller. The sprayer applies the sealant quickly and evenly, while the brush/roller (known as "back-brushing") forces the sealer deep into the wood grain and prevents puddling.
The best times of year to seal a deck are early fall or late spring. These seasons offer ideal conditions—mild temperatures (50°F to 85°F) and lower humidity—which allow the sealant to penetrate and cure correctly without evaporating too quickly in the hot sun.
Whether it is better to seal or clear coat wood depends entirely on the project's placement and how much wear and tear it will endure.
This might go against your instincts, but you shouldn't seal brand-new concrete! It needs to “cure” for a while first (at least a month) because it will be very vulnerable to damage otherwise. Sealing doesn't fix cracks. If you have cracks in your concrete, sealing won't do anything for those.
Coca-Cola acts as a powerful surface retarder on freshly poured concrete because of its high sugar content. By slowing down the curing process on the top layer, it allows workers to easily wash away the cement paste with a hose or pressure washer, leaving behind a textured, decorative "exposed aggregate" finish.
Water is the ultimate enemy of concrete. Because concrete is naturally porous, it acts like a hard sponge. When moisture gets inside, it causes a chain reaction of damage, especially when combined with temperature drops or corrosive chemicals.
A 5-gallon bucket of asphalt driveway seal coat generally covers 300 to 500 square feet for a single coat. The exact coverage depends heavily on the condition and porosity of your pavement, averaging roughly 80 to 100 square feet per gallon.
Driveway sealing is expensive because of heavy labor and material costs, tedious surface preparation, and mandatory contractor trip fees.
A 20x20 (400 square foot) asphalt driveway typically costs between $2,000 and $5,000 fully installed. This breaks down to an average of $5 to $12+ per square foot, which covers materials, base preparation, and professional labor.
The ideal waterproof sealant depends on your project. For outdoor decks and docks, deeply penetrating water-based sealers like Seal-Once Marine Grade Premium Wood Sealer are best. For outdoor furniture exposed to harsh weather, use a durable, film-forming Minwax Helmsman Spar Urethane.
Thompson’s Water Seal is excellent for short-term moisture protection on wood and masonry, but it lacks long-term durability. Because it is paraffin-oil based, it repels water very effectively, but offers poor UV protection and tends to wear off or collect dirt much faster than premium penetrating stains.