I am going to add more insulation to my roof space and I would like some advice on some products. 1. The foil bubble wrap loft roll, £13 a roll!. 2. Knauff Space blanket at £5 a roll. Basically its glass fibre in a bag and it comes in 150mm or 200mm rolls with a foil backing. Can anyone tell me if they know if the Knauff stuff is any good. Would I get better results using the bubble wrap on top of the existing insulation or by adding the space blanket? Its very cold in NI today so a hasty response is appreciated.
Knauf ( http://www.knaufinsulation.co.uk/index.html ) are a well known, reputable firm. The current recommended thickness of insulation is, I think, 270mm. I also think there is a Knauf version with a covering over the fibreglass, which makes it more DIY friendly, available in places like B&Q warehouses. There's plently to read on the Knauf website.
I have ordered Space-Blanket from B&Q who are doing a two for one promotion at present, at least in N. Ireland Would recommend the 200mm roll.
Please help! Where oh Where does "naked terry" get KNauf space blanket for £5 a roll. B&Q are selling it for £13.95 a roll (200mm version)!!! I want to buy some very soon, so any help and/or advice would be very welcome. Thanks.