Insulating Old Roofs

The other option is loose fill or blown insulation.

Insulating old roofs. Suitable insulation includes natural fibre based products made of sheep s wool or hemp as well as mineral wools. With an assumed pre existing u value of 2 23w m the best options are as follows. Alternative options for insulating old roofs one modern option for existing buildings is sprayed foam. One way to insulate walls of an old house is to focus on the home s exterior.

Caulk window trim and use weatherstripping to reduce air leaks. 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 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.

Apply a house wrap vapor barrier to exterior walls. Attach 1 inch foam board insulation. Equally the reverse is true. If you do have existing roof insulation the first thing to do is to check the depth.

Install siding over the insulation. Replace old windows with energy efficient units. Permeable insulation works well with old buildings that breathe. U value 0 38w m.

If you want to avoid internal changes you can do so by insulating externally.