Loft insulation sizes and suppliers

[Kooky45]

Hi everyone,

I need to resinsulate my loft but I can't find suitable insulation. The ceiling joists are at 600mm centres, and there is a central section where the joist have been raised to 150mm for boarding. So, I need 570mm wide x 2000mm long x 150mm deep insulation for the raised section to replace the very poor insulation there. For the rest of the loft I want to top up the existing insulation, laying it transvers to the joists so the width doesn't really matter.

The only insulations I've found so far is Knauf from B&Q and Homebase, but althought it's 570mm wide it's only 100mm thick. They also have the Space Blanket rolls which I could use for the rest of the loft though. I can't find anyone who supplies Owens Corning locally and their web site doesn't list UK suppliers although I did get some from B&Q a few years back.

Can anyone help recommend a brand and a supplier in the UK please with more suitable insulation?

[Grunff]

What you want is totally standard, off the shelf. Call any builders merchant in your area, they will be able to supply. Call a few to get the best price if it is a large area.

[Kooky45]

Hi everyone,

I need to resinsulate my loft but I can't find suitable insulation. The ceiling joists are at 600mm centres, and there is a central section where the joist have been raised to 150mm for boarding. So, I need 570mm wide x 2000mm long x 150mm deep insulation for the raised section to replace the very poor insulation there. For the rest of the loft I want to top up the existing insulation, laying it transvers to the joists so the width doesn't really matter.

The only insulations I've found so far is Knauf from B&Q and Homebase, but althought it's 570mm wide it's only 100mm thick. They also have the Space Blanket rolls which I could use for the rest of the loft though. I can't find anyone who supplies Owens Corning locally and their web site doesn't list UK suppliers although I did get some from B&Q a few years back.

Can anyone help recommend a brand and a supplier in the UK please with more suitable insulation?

[John Rumm]

The ordinary wide (i.e. 1.2m) rolls of rockwool or isowoll will be fine. You simply chop the whole role into sections ar the right width (they are pre-marked and partly cut through at 400mm and 600mm positions. You can lay as many layers as you want to get the desired thickness.

[N. Thornton]

Whats the best way to cut this stuff?

Regards, NT

[N. Thornton]

Whats the best way to cut this stuff?

Regards, NT

[Grunff]

It's already pretty much separated - all you do is cut through the paper with a knife then use your hands to part the sections.

[John Rumm]

Pull it apart - or use a panel saw if it need further persuasion