Insulating Old Roofs

One way to insulate walls of an old house is to focus on the home s exterior.

Insulating old roofs.

Apply a house wrap vapor barrier to exterior walls. U value 0 38w m. They are often advertised as a diy option but those who have done it suggest that it requires skill and experience to do well. Plasterboard 50mm pur insulation in 50mm timber stud with 50mm vented cavity to the existing wall.

Suitable insulation includes natural fibre based products made of sheep s wool or hemp as well as mineral wools. Caulk window trim and use weatherstripping to reduce air leaks. Attach 1 inch foam board insulation. If you want to avoid internal changes you can do so by insulating externally.

With an assumed pre existing u value of 2 23w m the best options are as follows. If you do have existing roof insulation the first thing to do is to check the depth. Permeable insulation works well with old buildings that breathe. Equally the reverse is true.

If there is only 25mm of insulating material then this is likely to date back to the 1970s as this type of. Install siding over the insulation. There is a good deal of controversy around these systems. The other option is loose fill or blown insulation.

Replace old windows with energy efficient units.