Vapor Barriers and Caulking

Vapor barriers and caulking help to prevent air and moisture migration. If your floor or foundation design incorporates a vapor barrier, that barrier should continue so it blends into the plaster on your bales. The barrier can be folded up and stapled to the wooden curb. Stucco mesh and plaster can be applied over this vapor barrier to create a seamless joint. Use high quality caulking on the joint between the foundation and/or floor and the wooden curb to help prevent air and moisture migration at this vulnerable point.

Your house will also have a vapor barrier between the ceiling and the roof insulation that should be cut to finish under the wall plaster. If you are building a post and beam design, be sure to have the vapor barrier continue from the ceiling behind the beam and into the plaster.

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