Please Note: The entire Impression Flooring family of floor covering products is considered slip resistant and is manufactured with 100% vinyl, which water will not adversely affect, which is why all of the Impression Flooring products are commonly used in marine applications inside the galley, heads and staterooms. The installation for such applications needs to be done with welded seams and with urethane caulking around the perimeter of the flooring material to keep moisture from intruding under the vinyl flooring, which could result in fostering the growth of mildew. All Impression Flooring products can be used in interior applications. The Londeck series are exterior grade and made with UV stabilizers to protect them from long-term exposure to the deleterious effects of the sun's rays. Each style of Impression Flooring has a unique coefficient of friction rating, which is a measurement of the relative slipperiness of pedestrian floor surfaces. Please click HERE for a list of Impression Flooring products and their coefficient of friction ratings. The raised disc surface pattern differs from product-to-product. Please refer to the Raised Disc Surface Pattern Comparison Chart when to matching new flooring to flooring already in service. Click HERE to access the Raised Disc Surface Pattern Comparison Chart.