Join Date: Jan 2012
Location: British Columbia
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Re: Pros and cons of steel sailboats
With an inch and a half of sprayfoam in my boat, there is still a lot of space between the panelling and the foam. In the forepeak I filled it with canned foam , thru small holes drilled in the panelling, for more insulation. I plan to do the rest, over time . When you consider the temperature difference between the boiling hot coffee in a Styrofoam cup, and the temperature of the outside of the cup , such a thin layer of foam is a super insulator. Filling the space between panelling and foam can be a huge increase in insulation, at minimal cost. I am hoping to find an island source of "Tytan" foam , which I am told, is far more closed cell than most other brands.
With plastic hulls with a liner , filling the space between the liner and hull with canned foam could be a huge improvement in comfort, in cold latitudes.
Brent Swain, Boat designer, Builder, and author of "Origami Metal Boatbuilding"