When you need a high-quality waterproof fabric, choose Sunbrella^® SeaMark^®.

Defend yourself against heavy rain and moisture with Sunbrella SeaMark. This marine fabric features Sunbrella’s solution-dyed acrylic with a color-matched, waterproof PVC backing on the underside. This combination results in a colorfast, waterproof fabric laminate that can withstand the harshest conditions in any marine environment. SeaMark is engineered to endure salt, moisture, sun, wind and temperature extremes. It’s UV and mildew resistant for exceptional boat exterior performance. The fabric is dielectrically sealable (also known as radio frequency welding) which is the process of welding different flexible materials together for superior seam and tensile strength. Due to the vinyl backing, this fabric can be cut with a sharp pair of scissors — no need for a hotknife.

Due to the waterproof backing on one side, this fabric has a wrong and a right side. Only the acrylic canvas side is meant to be exposed to the outside. This Sunbrella fabric is ideal for marine and outdoor awnings, biminis, dodgers, marine enclosures, boat covers and exterior marine cushions.