Best Way To Insulate Old House Walls

I was recently talking to a potential customer that lived in a home built in the 1930s and wanted to make his home more efficient.

Best way to insulate old house walls.

Currently there is blown in cellulose. We live in zone 6b and just purchased an old farm house. U value 0 38w m. The walls are lath and plaster 2x4 studs 1 boards tarpaper siding.

As is the case with most remodeling projects many of this house s walls were going to remain intact so tom had to consider how best to retrofit the. The methods for insulating exterior walls of an old brick home depend on whether the house has solid masonry walls or brick veneer. Keeping the original look of the house is very important to us and we would like. The clapboard siding needs to be replaced and i would like to upgrade the wall insulation and address air infiltration problems at the same time.

Hgtv canada fan melissa bergevin asked us on facebook what is the best way to insulate a 100 year old beach house with plaster walls and no attic access. Fermacell 50mm sheeps wool or hemp in 50mm timber stud against existing wall. I of course explained that we would start in the attic air seal and insulate go the crawl air seal and insulate and then take a look at his duct work. Adding extra insulation to the exterior walls of an older home when renovating or remodeling is a great way of improving a home s walls thermal performance and reducing energy use while reducing heating bills carbon footprint and improving a building s comfort level.

In other cases drilling holes in the walls or removing a couple courses of clapboard to blow insulation into the stud bays may work with no problems. Plasterboard 50mm pur insulation in 50mm timber stud with 50mm vented cavity to the existing wall. Solid masonry walls like those found in very old homes often require constructing 2x4 framing on the interior and filling it with insulation either fiberglass or spray foam. With an assumed pre existing u value of 2 23w m the best options are as follows.

U value 0 56w m. After all of that would move to the exterior walls where a dense packed cellulose product would be best for his. Mike holmes replied you have three options. Filling walls with a fluffy layer of fiberglass insulation is one of the easiest and least expensive ways to make your home more energy efficient.

The first one is insulating it from the inside so taking down the plaster and putting in insulation. Adding insulation to the walls of an old house without any other precautions can result is rotting walls full of mold under certain circumstances. It may look easy to go buy some packs of rigid insulation panels down at the. If a house s attic or roof is already fully insulated adding insulation to the walls may be the single best way to reduce heating and cooling costs.

How to insulate house walls from the outside.