Insulating Old Roofs

Caulk window trim and use weatherstripping to reduce air leaks.

Insulating old roofs.

Available in both foam and rigid form choose the board type. One way to insulate walls of an old house is to focus on the home s exterior. Insulation board should be added between the old and new roof systems to ensure proper insulation and to reflect heat from the outside. Replace old windows with energy efficient units.

Equally the reverse is true. If you want to avoid internal changes you can do so by insulating externally. Permeable insulation works well with old buildings that breathe. Plasterboard 50mm pur insulation in 50mm timber stud with 50mm vented cavity to the existing wall.

If there is only 25mm of insulating material then this is likely to date back to the 1970s as this type of. There is a good deal of controversy around these systems. If you do have existing roof insulation the first thing to do is to check the depth. Alternative options for insulating old roofs one modern option for existing buildings is sprayed foam.

The other option is loose fill or blown insulation. Attach 1 inch foam board insulation. Suitable insulation includes natural fibre based products made of sheep s wool or hemp as well as mineral wools. U value 0 38w m.

Install siding over the insulation.