Insulating Old Roofs

Replace old windows with energy efficient units.

Insulating old roofs.

The other option is loose fill or blown insulation. Permeable insulation works well with old buildings that breathe. One way to insulate walls of an old house is to focus on the home s exterior. If you want to avoid internal changes you can do so by insulating externally.

Apply a house wrap vapor barrier to exterior walls. Equally the reverse is true. Install siding over the insulation. Alternative options for insulating old roofs one modern option for existing buildings is sprayed foam.

Insulation board should be added between the old and new roof systems to ensure proper insulation and to reflect heat from the outside. U value 0 38w m. With an assumed pre existing u value of 2 23w m the best options are as follows. If there is only 25mm of insulating material then this is likely to date back to the 1970s as this type of.

They are often advertised as a diy option but those who have done it suggest that it requires skill and experience to do well. Attach 1 inch foam board insulation. If you do have existing roof insulation the first thing to do is to check the depth. There is a good deal of controversy around these systems.

Suitable insulation includes natural fibre based products made of sheep s wool or hemp as well as mineral wools.