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6 Best thompson deck sealers 2025 in the United States

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Our technology thoroughly searches through the online shopping world, reviewing hundreds of sites. We then process and analyze this information, updating in real-time to bring you the latest top-rated products. This way, you always get the best and most current options available.

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Our Top Picks

#1

Winner

Thompson’s WaterSeal Multi-Surface Waterproofer Stain, Clear, 1 Gallon

Rating
9.7
Chosen by1,412
UV Protection
Water Resistance
Durability

Most important from
4640 reviews

UV Protection
The UV-resistant formula prevents fading and peeling under the sun's harsh rays.
Water Resistance
The clear stain enhances the natural beauty of the wood while providing a robust waterproofing barrier, causing rainwater to bead up and roll off.
Durability
The durability is impressive, with the finish looking as good as new even after several months.
Ease of Application
The aerosol can provides a consistent and smooth spray, ensuring even coverage, which saves time and effort compared to traditional brush or roller methods.

Thompson’s WaterSeal Multi-Surface Waterproofer Stain, Clear, is a versatile option for protecting various exterior surfaces, including wood, concrete, and brick. As a clear stain, it maintains the natural texture of the wood while providing a protective layer, which is ideal for those looking to enhance their outdoor spaces without altering the appearance significantly. One notable strength is its robust water resistance, which can safeguard surfaces from water damage effectively. Additionally, it offers UV protection, helping to prevent fading and maintaining the appearance over time.

The product is easy to apply, making it a convenient choice whether you’re working on a fence, deck, or patio. However, it is important to note that while the clear finish preserves the texture, it might not be suitable for users seeking a more opaque or colored finish to hide imperfections. The durability is commendable, although regular maintenance might be necessary to keep up its effectiveness over long periods, especially under harsh weather conditions.

Thompson’s WaterSeal Clear Multi-Surface Waterproofer Stain is a strong candidate for those looking for a versatile, easy-to-use sealer that provides good water and UV protection while maintaining the natural look of their exterior surfaces.

Rating
9.7
Chosen by1,412
UV Protection
Water Resistance
Durability

Most important from
4640 reviews

UV Protection
The UV-resistant formula prevents fading and peeling under the sun's harsh rays.
Water Resistance
The clear stain enhances the natural beauty of the wood while providing a robust waterproofing barrier, causing rainwater to bead up and roll off.
Durability
The durability is impressive, with the finish looking as good as new even after several months.
Ease of Application
The aerosol can provides a consistent and smooth spray, ensuring even coverage, which saves time and effort compared to traditional brush or roller methods.
#2

Thompson’s WaterSeal Semi-Transparent Waterproofing Wood Stain and Sealer, Chestnut Brown, 1 Gallon

Rating
9.4
Water Resistance
Durability
Ease of Application

Most important from
323 reviews

Water Resistance
Repels all water and works great.
Durability
Seems to last about a year, which is expected in PA weather with sun, rain, and snow.
Ease of Application
Easy to use and looks nice on the wood gates.

Thompson’s WaterSeal Semi-Transparent Waterproofing Wood Stain and Sealer in Chestnut Brown is designed to enhance and protect outdoor wood surfaces. One of its main strengths is its ability to provide a semi-transparent finish that allows the wood texture to show through while adding a touch of color. This product is excellent for waterproofing, preventing water damage, and maintaining the beauty of decks, fences, and other exterior wood structures.

It also features advanced polymers that deliver fade-resistant color and UV protection, ensuring the wood stays looking great over time. Users will find this sealer easy to apply, even on damp wood, which makes it convenient for various projects without extensive preparation. It meets and exceeds industry standards for waterproofing, offering reliable performance.

The coverage can vary depending on the wood’s condition and porosity, which might require more product for larger areas. Also, the semi-transparent nature might not completely hide imperfections in the wood. The 1-gallon can covers between 150 to 400 square feet, so plan accordingly for your project size.

Rating
9.4
Water Resistance
Durability
Ease of Application

Most important from
323 reviews

Water Resistance
Repels all water and works great.
Durability
Seems to last about a year, which is expected in PA weather with sun, rain, and snow.
Ease of Application
Easy to use and looks nice on the wood gates.

Buying Guide for the Best thompson deck sealers

Choosing the right deck sealer is crucial to protect your deck from the elements and keep it looking great for years. A good deck sealer will provide a protective barrier against moisture, UV rays, and mildew, which can cause wood to warp, crack, and fade. When selecting a deck sealer, consider the type of wood your deck is made from, the climate you live in, and the level of maintenance you're willing to commit to. Here are some key specifications to consider when choosing a deck sealer.
Type of SealerDeck sealers come in different types, including clear sealers, semi-transparent stains, and solid stains. Clear sealers provide a natural look and are best for new or high-quality wood, as they allow the wood's natural beauty to show through. Semi-transparent stains add a bit of color while still showing the wood grain, offering a balance between aesthetics and protection. Solid stains provide the most color and protection, covering the wood grain completely, and are ideal for older decks or those with imperfections. Choose the type based on the look you want and the condition of your deck.
UV ProtectionUV protection is important because it helps prevent the wood from fading and becoming damaged by the sun's rays. Sealers with UV protection will extend the life of your deck by keeping the wood from drying out and cracking. If your deck is in a sunny area, look for a sealer with high UV protection. For decks in shaded areas, UV protection is still beneficial but may not need to be as strong.
Water ResistanceWater resistance is a key feature of any deck sealer, as it prevents moisture from penetrating the wood, which can lead to rot, mold, and mildew. Sealers with high water resistance will create a barrier that repels water, keeping your deck dry and safe. If you live in a rainy or humid climate, prioritize a sealer with excellent water resistance. For drier climates, water resistance is still important but may not need to be as robust.
DurabilityDurability refers to how long the sealer will last before it needs to be reapplied. Some sealers may last only a year, while others can last up to three years or more. The durability of a sealer depends on its formulation and the conditions your deck is exposed to. If you prefer low maintenance, choose a sealer with a longer lifespan. However, if you don't mind reapplying the sealer more frequently, you can opt for one with a shorter lifespan.
Ease of ApplicationEase of application is an important consideration, especially if you plan to apply the sealer yourself. Some sealers are easier to apply than others, requiring only a single coat and minimal preparation. Others may need multiple coats and more extensive prep work. If you're a DIY enthusiast, look for a sealer that is user-friendly and comes with clear instructions. If you prefer to hire a professional, ease of application may be less of a concern.
FinishThe finish of a deck sealer can range from matte to glossy. A matte finish provides a more natural look, while a glossy finish can make the wood appear shiny and more polished. The choice of finish is largely a matter of personal preference. Consider the overall aesthetic you want for your deck and choose a finish that complements it. Keep in mind that glossier finishes may be more slippery when wet.

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