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#1
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Insulation Amount for Aluminum
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#2
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Insulation Amount for Aluminum
Roger Mcmillan wrote:
I'm building a 36ft aluminum Van de Stadt and I'm not sure how far down the hull I need to spray my insulation. Should I go just to the waterline, or is it better to spray almost to the bilges? Thanks Just to the waterline is absolutely standard. You can't insulate against the cold from the ocean. But you can insulate under floorboards with rigid foam too, to keep the cold at bay. Evan Gatehouse |
#3
posted to rec.boats.building
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Insulation Amount for Aluminum
Insulation always makes sense whenever a temperature differential is
present. Going below waterline(with the insulation) is beneficial unless other concerns are present(bilge water will be absorbed by styrofoam ,even Urethane foam eventually if submersed for long durations,or mechanical access etc). The type/properties/dimensions of fluid (Air inside/water outside), materials in crossection, and condition of surface movements can be calculated into a transfer number which has a profound influence on heattransfer (in or out). Insulation or not can make a significant difference. Of course there is the added expense, but if you cruise in waters temp beyond of 68 to 74 F or so insulation will make boat more comfy. You will loose some of the dehumidification effect as air moisture is being condensed at cooler below waterline surfaces and but have less condensate in the bilge. Good ventilation and dehumidifier is a plus to have. ETAP is a French boat manufacturer where foam is sandwiched between outer and inner hull. "Roger Mcmillan" wrote in message ... I'm building a 36ft aluminum Van de Stadt and I'm not sure how far down the hull I need to spray my insulation. Should I go just to the waterline, or is it better to spray almost to the bilges? Thanks -- Roger McMillan |
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