Boatbuilding Lumber Supplier List

Boatbuilding Lumber Supplier List

Cardboard will work for a canoe that is stored indoors and used for less than 4 hours at a time. The idea is that humidity on the inside and outside of the cardboard will equal out over time. So if it is kept in a dry environment all the time except when being used, it will be fine. But if the canoe is kept in a steamer all the time it will turn to mush.

Alternative materials are plywood or construction foam. Each cost about $8 a 4'x8' sheet. $16 for this project. I want to use a 60/40 bed sheet to tape the seams rather than fiber glass with the non-toxic glue I have already purchased. Plywood is hard and sharp enough to rip a bedsheet - it would require fiber glass. Foam will not rip the bedsheet. Will the non-toxic glue stick to foam?

If it does the material will change from cardboard to foam.