is thompson water seal a polyurethane sealant


Thompson's Water Seal: The Perfect Polyurethane Sealant for Ultimate Protection


When it comes to protecting your wooden surfaces from the damaging effects of moisture, Thompson's Water Seal has become a trusted name in the industry. But is it a polyurethane sealant? In this article, we will delve into the world of Thompson's Water Seal to understand its composition, benefits, application process, and more. So, let's explore how this remarkable product can keep your wooden structures safe for years to come.

Understanding Thompson's Water Seal Composition

Thompson's Water Seal is a clear sealer that provides a protective barrier against water damage and UV rays. While it might sound like a polyurethane sealant, it is important to note that Thompson's Water Seal is actually an advanced silicone formula specifically designed for wood surfaces. This unique formula penetrates deeply into the wood, creating a molecular bond and providing long-lasting protection against the elements.

1. The Benefits of Using Thompson's Water Seal

1.1 Ultimate Water Protection

One of the key benefits of using Thompson's Water Seal is its exceptional water-repellency. Whether it's rain, snow, or regular watering, this sealant prevents water from penetrating the wood. By keeping moisture at bay, it helps prevent rot, warping, cracking, and other damages caused by water intrusion.

1.2 UV Resistance

In addition to its water repellency, Thompson's Water Seal also offers UV resistance. By blocking harmful ultraviolet rays, it helps protect your wooden surfaces from sun-induced damage, such as discoloration and fading. This feature ensures that your favorite wooden deck or furniture maintains its natural beauty even after prolonged sun exposure.

1.3 Mold and Mildew Prevention

Moisture can quickly lead to the growth of mold and mildew, causing not only structural damage but also health hazards. Thompson's Water Seal inhibits the growth of these microorganisms, keeping your wooden surfaces clean, safe, and free from unsightly stains.

2. Application Process

Now that we have discovered the amazing benefits of Thompson's Water Seal, let's explore how to apply it to your wooden structures.

2.1 Surface Preparation

Before applying any sealant, it is crucial to prepare the surface properly. Start by thoroughly cleaning the wood to remove dirt, grime, and any previous coatings. Use a mild detergent and a stiff brush to scrub the surface, and rinse it well with water. Allow the wood to dry completely before moving to the next step.

2.2 Applying Thompson's Water Seal

Shake the Thompson's Water Seal container well before opening it. There are various application methods available, including brushing, spraying, or rolling. Choose the method that best suits your needs. Work in small sections and apply an even layer of the sealant, making sure to penetrate the wood. Avoid over-applying as it may result in a sticky or tacky finish.

2.3 Drying Time and Reapplication

Thompson's Water Seal typically dries within two hours, but drying time may vary depending on temperature and humidity. It is essential to check the manufacturer's instructions for the specific product you are using. To enhance long-term protection, a second coat is recommended. Allow the first coat to dry completely before applying the second.

3. Thompson's Water Seal Application Tips

3.1 Weather Considerations

To achieve optimal results, it is advisable to apply Thompson's Water Seal on a warm and dry day. Avoid applying the sealant when rain is expected within the next 24 hours. The temperature should be above 50°F (10°C) during the application and drying process.

3.2 Testing on a Small Area

If you are uncertain about the final appearance or compatibility of Thompson's Water Seal with your wooden surface, it is always a good idea to test it on a small and inconspicuous area first. This way, you can ensure that the finish meets your expectations before applying it to the entire surface.


Thompson's Water Seal, although not a polyurethane sealant, is among the top choices for protecting your wooden structures. Its advanced silicone formula provides remarkable water resistance, UV protection, and mold prevention. By using Thompson's Water Seal and following the correct application process, you can extend the lifespan of your wooden surfaces, ensuring they remain beautiful and resilient for years to come. Don't wait – invest in Thompson's Water Seal today, and enjoy the peace of mind that comes with having superior protection against the elements.


Just tell us your requirements, we can do more than you can imagine.
Send your inquiry

Send your inquiry

Choose a different language
Current language:English