Bit of a beginner here! I insulated my roof (the actual roof, not the floor joists) with the posh 12 ply (approx.) layers but alas need about a square metre more - any suggestions as to what cheap insulation I can use - e.g. that "space blanket" stuff for floor joists?
Also any suggestions for filling in small holes in the tiling - I used expanding foam which I think worked well but maybe there's something else?
Finally a really basic question revealing my total ignorance - what size of plaster board srews would I neeed to attach boards to ceiling joists?