In the early 1920's, polymer chemist Edward Addis Thompson developed a formula that protected buildings from exterior water damage. His discovery became known as Thompson's® WaterSeal® Clear Multi-Surface Waterproofer and initially was used by architectural and construction firms for concrete applications.

Chemical Composition/Ingredients

Proven to waterproof concrete, brick, exterior wood and other exterior surfaces. Use as a concrete waterproofer, brick sealer and wood sealer.

If applied correctly, Water Seal will last up to 4 years. This is dependent on conditions such as orientation of the wall and local climate.

noun. a small amount of water contained in the trap of a drain to prevent the passage of foul smells.

Water used to prevent wastewater or dirt from reaching moving parts. Sealing water is at a higher pressure than the wastewater it is keeping out of a mechanical device.

Silicone o-rings are very much a gasket/sealant industry standard today. Silicone rubber compounds typically offer very good resistance to ozone, acids, water, and decent resistance to weathering and heat, making them great for outdoor applications.

Applying a breathable, water-resistant coating to a porous surface usually involves silicon-based materials. The most common varieties include siloxane, silane, and silicone rubber, which are appealing due to their effectiveness in penetrating substrates without compromising porousness.

A water seal is a type of mechanical seal used to prevent the leakage of liquids, typically water, in various applications. It consists of a barrier that prevents the passage of water between two components, such as pipes, fittings, or containers.

Needs. If you work in small areas at a time the leading edge of your stain stays wet. And you can avoid lap marks when it dries. Make sure the stain is worked into the wood.

Solid stains require recoating after 4-5 years, on average. Sealers do not provide any coloration of the wood, but they protect it against moisture that causes rot and splitting. Most sealers last one cycle of seasons and should be renewed each year.

Although waterproofing wood will last for a while, it needs to be reapplied every few years to keep its moisture resistance.