I wondered if anyone can offer advice with regard to home insulation at the rafters.
My house is a mid-terraced 1930's 3-bedroomed property. I am in the process of insulating my loft rafters (inner side of the tiles). However, I have noticed that the inner side are showing bare tiles throughout, basically there isn't any inner roof felt - just bare tiles.
I am was thinking about either using the foil rolls (stapled) across the rafters or possibly use polystyrene blocks (squeezed fit type). Could anyone advise if this is worth doing (especially the foil rolls) or will it be a waste of time and money? as the outer side of the foil would no doubt get dirty and may eventually fall off as its against the inner side of the roof tile. Any advice on how best for me to tackle this would be much appreciated.