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wendortb · 08-23-11, 02:57 PM

I have read that a major air leakage area is where the walls meet the floor and roof. In new construction, they have the sill plate foam to air seal this area.

I have also read about air sealing using drywall and caulking behind the drywall at the top and bottom when applied.

I was wondering, for an existing house, would it be beneficial to seal the drywall along the bottom edge to the floor? I would think this would create an air seal and since most people have base molding, you wouldn't see the caulk.

I have heard the argument that drywall expands and contracts, but at the top it is normally attached to the ceiling using joint compound. This isn't always cracked so I don't think it is doing that much moving.

08-23-11, 02:57 PM	#1
wendortb Lurking Renovator Join Date: Aug 2011 Location: Indiana Posts: 14 Thanks: 0 Thanked 0 Times in 0 Posts	Caulk drywall to floor? I have read that a major air leakage area is where the walls meet the floor and roof. In new construction, they have the sill plate foam to air seal this area. I have also read about air sealing using drywall and caulking behind the drywall at the top and bottom when applied. I was wondering, for an existing house, would it be beneficial to seal the drywall along the bottom edge to the floor? I would think this would create an air seal and since most people have base molding, you wouldn't see the caulk. I have heard the argument that drywall expands and contracts, but at the top it is normally attached to the ceiling using joint compound. This isn't always cracked so I don't think it is doing that much moving.