Sealwise manufactures genuinely waterproof sheet materials for environments where failure isn’t an option. 0% water absorption. Lifetime guarantee. Zero warranty claims since 2009.
The Sealwise Difference
There’s a difference. Water-resistant materials slow moisture down. Waterproof materials stop it completely. Sealwise products are closed-cell PVC foam — water can’t penetrate the surface, the edges, or the core. Ever.
That’s why we offer a lifetime waterproof guarantee on every product. And it’s why we’ve never had a single warranty claim since we started manufacturing in 2009.
Whether you’re a fabricator building from sheet or need panels ready to edge and install, we have a waterproof solution.
The complete waterproof construction system. Closed-cell board paired with chemical welding for permanently sealed joints. Machines with standard woodworking tools.
Pre-laminated waterproof panels. Our waterproof core bonded to your chosen face material, ready for edging and installation. Same waterproof performance, reduced processing time.
Sectors
Anywhere moisture, hygiene, and durability matter — Sealwise products are already there.
Why Sealwise
0% water absorption through the entire board — not just the surface. Closed-cell structure means nothing gets in. Not through faces, not through cut edges, not through drilled holes.
Our patented W14 system chemically welds panels together, creating a permanent, homogenous bond. No silicone. No mechanical joints. No gaps where moisture or bacteria can enter.
Machines with standard woodworking tools — saw, route, drill, fix. Your fabricator already knows how to work with it. Accepts laminate, vinyl wrap, and paint finishes.
Made with recycled content and 100% recyclable at end of life. Long lifespan means fewer replacement cycles and less material going to landfill over the building’s lifetime.
Get Started
We’ll send physical samples with full technical documentation — dispatched within 24 hours. Test our waterproof performance yourself before you specify.
Free samples with no obligation
Dispatched within 24 hours
Full technical data and test certificates included
Our Guarantee
We’ve never had a warranty claim. Not once since 2009. That’s not marketing — it’s manufacturing. Family-owned in Somerset, building products that don’t fail.
