Ecohouse - insulation - loft

Warmcell loft insulation was put above the attic ceiling between the joists (do not use it if you ever think you may go into the space again, as when you move it, as it then gets everywhere).
This photo also shows the top of the inter-joist combe insulation, and the air gap maintained to the sarking boards.

The best insulation to use is Thermofleece – this breathes, can regulate moisture and is very pleasant to handle. It is also a very environmental product providing a market for sheep’s wool. However, it is expensive.
 
Hemp, jute, fibreglass, and mineral wool insulation was also tried above the Warmcell, increasing the overall loft insulation to 300mm.