Insulating Old Roofs

Available in both foam and rigid form choose the board type.

Insulating old roofs.

One way to insulate walls of an old house is to focus on the home s exterior. They are often advertised as a diy option but those who have done it suggest that it requires skill and experience to do well. If you do have existing roof insulation the first thing to do is to check the depth. Equally the reverse is true.

If you want to avoid internal changes you can do so by insulating externally. Install siding over the insulation. Apply a house wrap vapor barrier to exterior walls. The other option is loose fill or blown insulation.

There is a good deal of controversy around these systems. Permeable insulation works well with old buildings that breathe. U value 0 38w m. Alternative options for insulating old roofs one modern option for existing buildings is sprayed foam.

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. If there is only 25mm of insulating material then this is likely to date back to the 1970s as this type of. Caulk window trim and use weatherstripping to reduce air leaks.

Attach 1 inch foam board insulation.