by welsh brickie »
Sun Mar 31, 2013 5:32 pm
you could use either method the problem is your losing internal space. The insulated plasterboard is 12.5mm with 25mm insulation ,plus adhesive, 50mm min. Also take into account the window boards need changing door casings need extending and electric sockets.
With the quilt, iso super 10 you need to staple it with battens, so you could fix 25mm thick battens to the wall the quilt can then be stapled then the plasterboard 12.5mm so about 35mm and its expensive.
The foil backed plasterboard is the best option in my opinion its 12.5mm with a 10mm allowance for adhesive.