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Osmosis is caused by a chemical reaction between water and unreacted substances remaining in the manufactured hull. Water breaches the exterior gelcoat and reacts with the chemical components creating acidic substances. These substances create pressure behind the gelcoat which causes blisters and eventually cracking. Once the gelcoat is breached in this manner, the underlying laminate is capable of absorbing water like a sponge Use the Interlux Interprotect® system to treat and help prevent this insidious problem Interprotect 2000/2001 is a superior two-part epoxy water barrier with Micro-Plates®, used in the prevention and repair of osmotic blistering. Technically, the Interprotect® Micro-Plate® formula provides millions of overlapping microscopic plates. When bound in the epoxy coatings, they create an overlapping barrier similar to shingles on a roof. Micro-Plates therefore eliminate any direct path for water migration.
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