Quote:
Originally Posted by 77SceptreOB
How is Polyester resin any more or less pourous than Epoxy resin? Neither is "pourous" as I see it. These SeaCrafts are built primarily out of Polyester resins and are Very water tight. Please explain. Comments?
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epoxy is completley waterproof - it will adhere,no water
polyester resins are pourous - these will allow small amount of water to be absorbed,and passed through - the reason a boat's bottom is epoxy barrier coated - to assure no water is absorbed by the hull...
when bonding a glass - fiberglass to wood - polyester resins,they provide a surface bond - due to the fact,they will not fully "soak" in the wood
epoxy,with it's long kick time,and the fact it's waterproof,it provides a stronger,much more reliable bond,when glassing to wood...
epoxy has a much longer kick time,versus polyester - longe cure,stronger bond...