Blanket Loft Insulation 270mm - Where to Buy ?

[hooley]

Hi,

I'm trying to find the best deal on blanket insulation for my loft.

I need 20 SqM & have read you should have a thickness of 270mm. http://www.whitehorsedc.gov.uk/Energy/DetailPage-5386.asp

The local B&Q only have Knauff 150mm @ £10.48 covers 2 SqM per roll. So £104.80 for 10 rolls. Ideally I want 270mm. Can anyone post a URL for a company that sells cheaper ?

Cheapest I've found so far is £22.18 for 270mm, but postage is £23.50!
http://www.above-it-all.co.uk/acatalog/Loft_Insulation.html

 

[shenks]

Do you definitely need 270mm? I know that's what is recommended on the website but in the past I have used 150mm followed by a 100 mm cross lay. This tends to work out cheaper and is much easier to handle.

You also get the benefit of ensuring no air gaps between the rolls.

Alternatively use some insulation with foil backing (either single or double sided) as this will reduce the total thickness required quite dramatically in some cases. Just remember that any insulation with a foil surface requires an airgap facing the foil surface to function correctly. This is because the foil is there to reflect radiant heat energy and a lack of an airgap makes it become a conductor of heat!

 

[noseall]

shenks is spot on.

150mm between joists 100mm over the top.

thats how b.c like it anyway.

 

[simon_t]

Try contaacting your gas\electricity supplier as they off subsidised loft insulation to their customers.

Also try the Energy Savings Trust

 

[hooley]

Thanks all.

Didn't want to go down the Grant option as we've had them out to quote. £109 for 100mm thickness.

Got my stuff from Wickes today. There was an offer in store - 30% off all loft insulation.

Bought 4x170mm / 4½ SqM & 2x100mm / 10 SqM @ £12.79 a roll. Job done for £77!