best sealer for composite decking
Discover the best sealers for composite decking to protect and enhance your deck’s appearance. Learn about different types of sealants and their benefits.
Best Sealer for Composite Decking
Introduction
Composite decking has become a popular choice for outdoor living spaces due to its durability, low maintenance requirements, and aesthetic appeal. However, like any other deck material, it requires periodic treatment to maintain its beauty and longevity. One of the most effective ways to protect your composite deck is by applying a sealer. In this article, we will explore different types of sealers available for composite decking, including acrylic, oil-based, and water-based options. We’ll discuss their pros and cons, how they affect the longevity and appearance of composite decks, and provide tips on application techniques.
Types of Sealers for Composite Decking
Acrylic Sealers
Acrylic sealers are known for their strong UV protection and vibrant color enhancement. They form a hard, protective layer over the surface of the composite decking, which can help resist fading and discoloration caused by sunlight exposure. However, acrylic sealers may not be as flexible as other types, which can lead to cracking or peeling if the deck expands or contracts with temperature changes. Additionally, acrylic sealers can sometimes leave a slightly glossy finish, which might not be desirable for those seeking a more natural look.
Oil-Based Sealers
Oil-based sealers are praised for their deep penetration into the composite material, providing excellent water resistance and protecting against mold and mildew. These sealers also enhance the natural wood grain appearance of composite decking, giving it a richer, more authentic look. On the downside, oil-based sealers tend to have a longer drying time and emit stronger fumes compared to water-based alternatives. They also require more frequent reapplication to maintain their effectiveness.
Water-Based Sealers
Water-based sealers are an environmentally friendly option that dries quickly and has minimal odor. They are easy to apply and clean up with water, making them a convenient choice for DIY projects. Water-based sealers offer good UV protection and can help prevent fading, but they may not penetrate as deeply as oil-based sealers, potentially leading to less long-term protection against moisture damage. They are generally more suitable for light to moderate traffic areas.
Tips on Application Techniques
To ensure the best results when applying any sealer to your composite deck, follow these steps:
- Clean the deck thoroughly before applying the sealer to remove dirt, debris, and old sealant residues.
- Apply the sealer evenly using a brush, roller, or sprayer, depending on the product instructions and your preference.
- Allow sufficient drying time between coats, typically recommended by the manufacturer.
- For best results, apply two to three thin coats rather than one thick coat.
Conclusion
Choosing the right sealer for your composite decking depends on your specific needs and preferences. Acrylic sealers offer strong UV protection and vibrant colors, while oil-based sealers provide deep penetration and excellent water resistance. Water-based sealers are eco-friendly and user-friendly, though they may require more frequent reapplication. By understanding the pros and cons of each type and following proper application techniques, you can extend the life and beauty of your composite deck.
Reference
Baoding Plastroy WPC Products



Why Choose Plastory?
Baoding Plastory New Materials Co., Ltd. is a manufacturer of decorative materials with over 9 years of experience and 56 separate production lines.
Currently, our annual production exceeds 30,000 tons, with products exported to more than 50 countries worldwide.
Plastory is the drafting unit of the WPC National Standards and has obtained certifications such as REACH, ASTM, CE, and FSC. Plastory is dedicated to maintaining consistent quality, focusing on details, and prioritizing customer satisfaction.
Our factory is located in Baoding, Hebei Province, China, with a prime location and convenient transportation access. Baoding is approximately a 1.5-hour drive from Beijing Capital International Airport and just 2 hours away from Tianjin Port, making it easy for global clients to visit and facilitating efficient shipping of goods. Our facility spans a large area, equipped with advanced production equipment and modern testing facilities to ensure that every batch of products meets the highest quality standards.
We warmly welcome clients from around the world to visit our factory, where you can see our production processes firsthand and experience our product quality. Please feel free to reach out to us—we are committed to providing you with the best products and services.
Kindly get in touch with us to request a product catalogue.
Reviews
There are no reviews yet.