Insulating Old Roofs

The other option is loose fill or blown insulation.

Insulating old roofs.

Alternative options for insulating old roofs one modern option for existing buildings is sprayed foam. They are often advertised as a diy option but those who have done it suggest that it requires skill and experience to do well. Install siding over the insulation. Permeable insulation works well with old buildings that breathe.

Replace old windows with energy efficient units. Available in both foam and rigid form choose the board type. U value 0 38w m. Suitable insulation includes natural fibre based products made of sheep s wool or hemp as well as mineral wools.

Insulation board should be added between the old and new roof systems to ensure proper insulation and to reflect heat from the outside. Apply a house wrap vapor barrier to exterior walls. If you want to avoid internal changes you can do so by insulating externally. Caulk window trim and use weatherstripping to reduce air leaks.

Plasterboard 50mm pur insulation in 50mm timber stud with 50mm vented cavity to the existing wall. Attach 1 inch foam board insulation. Equally the reverse is true. One way to insulate walls of an old house is to focus on the home s exterior.

With an assumed pre existing u value of 2 23w m the best options are as follows.