10 Best Thompson Wood Water Sealers 2026 in the United States

Thompson's WaterSeal Clear Wood Sealer is an oil-based polyurethane product designed specifically for protecting wood surfaces. Its clear finish helps maintain the natural look of wood while offering strong water resistance, making it a solid choice if you want to keep wood safe from moisture damage. The oil-based formula generally means better durability compared to water-based sealers, so it can stand up to outdoor conditions well.

However, oil-based sealers typically take longer to dry, so you'll need to allow extra time before using the treated wood. This sealer does not clearly specify UV protection, which is important if your wood will be exposed to a lot of sunlight, so you might want to consider that depending on your needs. Application should be straightforward since it’s a liquid form, but working with oil-based products can be a bit messier and require proper ventilation.

Customer reviews suggest decent satisfaction, with a solid rating of 4.3 out of 5 stars. Given its size (6 gallons), this product suits larger projects or frequent use rather than small touch-ups. If you want a reliable, waterproof sealer that keeps wood looking natural and can handle outdoor exposure, this is worth considering, but be prepared for longer drying times and possibly less UV protection compared to some alternatives.

Thompson's WaterSeal Clear Wood Sealer is a solvent-based product designed mainly for protecting exterior wood surfaces, but it also works on brick, concrete, and masonry. Its clear finish helps maintain the natural look of your wood while providing good waterproofing, which means it stops water from soaking in and causing damage. This sealer covers up to 350 square feet per gallon, so one gallon typically covers a decent-sized area.

It is easy to apply and cleans up with just soap and water, making it user-friendly for home projects. Solvent-based sealers usually dry faster than water-based ones. While it helps prevent water damage effectively, it does not provide strong UV protection, so its ability to stop sun fading might be limited compared to some specialized sealers. The durability is solid for outdoor use, but periodic reapplication might be needed depending on weather exposure.

This sealer is a reliable choice if you want a clear, easy-to-use product that protects wood and some other materials from water damage, especially for outdoor use, but if UV protection is a priority, you might want to consider additional or alternative products.

Thompson’s WaterSeal Multi-Surface Waterproofer Stain is a clear, water-based sealer designed to protect various outdoor surfaces like wood, concrete, and brick. It works as a waterproofing stain, which means it not only seals out water but also enhances the natural look of your surfaces without hiding their texture. This product offers good water resistance thanks to its waterproof polymer base and is suitable for exterior use, making it a versatile option for decks, fences, patios, and more.

One key advantage is its fade-resistant finish that protects against UV damage, helping your surfaces maintain their appearance over time. The sealer is easy to apply with just one coat, and cleaning the surface beforehand improves results. Coverage is decent at around 375 square feet per gallon, which is typical for this kind of sealer. While the product is marketed as durable, it may require reapplication over a few years depending on the weather conditions and surface wear. Water-based products like this generally dry faster than oil-based ones, which can be convenient if you want to finish the job quickly.

Because it’s clear, it won’t change the color of your wood much, which is great if you want to keep a natural look. This sealer is a solid choice for anyone looking to protect and subtly enhance outdoor surfaces without the hassle of complicated application or strong odors associated with oil-based sealers.