Good day,
I am ready to insulate the loft in my 1850-built cottage.The joists in the loft are about 4" (100mm) deep. I may want to partially board out the loft at some point in the future. Should I therefore buy loft insulation that is only 100mm thick? I imagine I could use 150mm thick rockwool, and it would compress down if necessary, but would there be any point?
The other option (in the interest of maximum insulation) is to forget about boarding out the loft, and use 100mm or 150mm rockwool between the joists, then lay large space blankets over the lot. But then, I guess I'd have to kiss goodbye to any ideas of walking around in the loft, e.g., to use it for storing stuff, yes?
The loft is very drafty. Is there an easy way to cut down on drafts coming in between the felt? Or should I not worry about that?
Anyone know if grants are available for loft insulation, and if so, where to apply?
Many thanks,
Al