To reduce air flow a homeowner will first need to air seal.
Plaster repair material for air sealing attic.
The scratch coat the brown coat and the finish coat.
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The opening around a furnace or water heater flue is a major source of warm air into the attic photo 5.
A traditional multi coat plaster system begins with a substructure of lath thin wood slats or metal mesh that s attached to the wall framing.
Fill the attic with additional insulation.
If there s no wood staple it right to the drywall.
I have an 1850 house upstate ny the ceiling right now is just lathe and plaster and the attic has no insulation.
Figure 5 the fiberglass roll is covered with spray foam to air seal the top of the wall.
Roll a piece of fiberglass batt and stuff it into place at the top of the wall where the top plate is missing.
Three coats of wet plaster are applied in layers to the lath.
Skip air sealing and expect to pay big many people overlook the need to air seal because they look around their house and see walls and ceilings that do not have holes to the attic or outside.
I m planning to blow in a substantial amount of cellulose insulation and i m curious if the plaster needs any air sealing.
Cover the roll of fiberglass batt with spray foam to air seal it in place.