Exterior Brick Wall Insulation

Larsen trusses with cellulose or batt insulation.

Exterior brick wall insulation.

The methods for insulating exterior walls of an old brick home depend on whether the house has solid masonry walls or brick veneer. Blown in insulation also known as foam or spray in insulation is ideal for filling in nooks and crannies when. This will entail applying rigid insulation board either foam or mineral wool over the inside of the wall and then covering that up with drywall. A larsen truss wall is one with engineered i joists attached to the outside of a stud or brick wall which then creates a cavity that can be filled with additional insulation.

How to insulate an older brick home can be a challenge. I ve talked in the past about how blown in insulation is highly recommended for northern california but this is especially true when it comes to how to insulate solid brick walls in old homes from the exterior. Very old brick homes often have no space to add insulation as the plaster was applied directly to the brick wall. Multiple wythe brick or brick veneer on block then you will have to insulate the wall from the inside.

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. Outer walls may be 4 inch thick bricks with inner walls of concrete brick or cinder block that is also 4 inches thick. The thin furring strips that hold the inside walls to this material leaves little room for insulation. Applying and fixing the insulation blocks in this case 600 mm for maximum effect.

It lists several caveats to anyone who is considering insulating a brick wall on the interior with rigid foam including a the need to manage exterior bulk water to limit brick wetting and b the fact that this technique can only be used when the interior brick surface is smooth not lumpy and c the importance of ensuring that the rigid. Foam insulation is often sprayed in through holes in the interior walls that must then be filled and re painted. Below are a few methods for improving an older home s insulation levels and attaching exterior wall insulation successfully. In addition other exterior wall finishes for your new insulation can be considered such as brick slips and other cladding type wall coverings.