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Question DetailsAsked on 2/8/2013

we have a home built in 1899 with no insulation in the walls or under the floor. Need to insulate! Anybody had blown in cellulose ? Cost?

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Voted Best Answer

A couple of tips from an owner of a 1790s New England home and an energy auditor in Maine.
1. Blown in cellulose is a fine idea but you must take care not to create a moisture problem inside the insulated wall that will eventually rot out the sills. If you want to prreserve the existing plaster walls then you must use special paint on the interior plaster that acts as a paint AND A VAPOR BARRIER. you can put a finish coat over it as you like. Benjamin Moore has this paint called: Super Spec Latex Vapor Barrier Primer Sealer (260).

2. Remember, the blown in cellulose can be down either from the interior or the exterior of the house. If it is doen from the outside you will either see the cork plu holes or the contractor will have to remove a row of clapboard to make concealed holes, then replace the clapboard and paint it again. Clapboard is likely to split on an old house so the repairs may be quit visible. If you do it from the inside, then a good plaster skilled tradesman can make the patch invisible. Do that before you prime/seal and finish coat the inside.


Answered 7 years ago by Norton West

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