by silkeysak » Mar 21, 2013 9:21 pm
Thought I'd share this with you guys to help in your decision to recore with balsa or composite.
This is from Composites Technology, Oct. 2003
A common rap against balsa wood cores, particularly in the marine industry, is that the material will rot in the presence of fresh water. But marine specialists say moisture uptake occurs only when spaces between the cut core squares are not completely sealed with laminating resin or bedding compound, or if deck fasteners that penetrate the cored laminate are not properly gasketed and sealed against rainwater intrusion. Resin infusion molding methods evacuate air under vacuum pressure, ensuring that all voids fill with resin. Properly fitted interior insulation material also can help resist water accumulation from condensation, caused by temperature differences between the inside and outside of the hull.
Whether it's actually had water in it or not, it can get wet and rot from condensation. Original 'Streams have had more than enough time for this to happen.
Thought I'd share this with you guys to help in your decision to recore with balsa or composite.
This is from Composites Technology, Oct. 2003
A common rap against balsa wood cores, particularly in the marine industry, is that the material will rot in the presence of fresh water. But marine specialists say moisture uptake occurs only when spaces between the cut core squares are not completely sealed with laminating resin or bedding compound, or if deck fasteners that penetrate the cored laminate are not properly gasketed and sealed against rainwater intrusion. Resin infusion molding methods evacuate air under vacuum pressure, ensuring that all voids fill with resin. Properly fitted interior insulation material also can help resist[b][i] water[/i][/b][b][i] accumulation from condensation, caused by temperature differences between the inside and outside of the hull.
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Whether it's actually had water in it or not, it can get wet and rot from condensation. Original 'Streams have had more than enough time for this to happen.