Aug 20, 2021 · One of the simplest and most effective ways to insulate a pitched roof is to fit Celotex between the roof rafters. It’s a great insulation solution for both new build houses and …

Sep 29, 2009 · I'm looking to fix some Celotex boards to the underside of the rafters in our loft conversion to avoid cold bridging. I'll be fixing the boards at 90 degrees to the rafters but my …

Feb 11, 2016 · In either case, I would fix at least 25mm Celotex over the face of the rafters, and tape the joints, to reduce cold bridging across the rafters, and to provide a vapour barrier (the …

Arguably the most popular pitched roof solution, installing insulation between and under the rafters uses the depth of the structural timbers to best effect. Its versatility is the key to its …

Feb 4, 2019 · I have already put 200mm of insulation between my rafters, and now I need to fix 80mm of Celotex under those rafters. Since I should be able to do that by attaching the …

Feb 23, 2014 · If you have a non breathable membrane (black roofing felt) then you could install 50mm of Celotex GA4000 between the rafters and 80mm of Celotex GA4000 below the rafters …

Nov 5, 2020 · Below we explain how to insulation roof rafters with Celotex. Clear the rafter space using a vacuum to remove any dust or debris that has settled. If you spot any dry rot, cracks or …

Installing Celotex insulation boards involves carefully fitting them into place using appropriate mechanical fixings, ensuring a snug and secure fit. The boards should be installed tightly to …

Celotex insulation boards should not be installed when the temperature is at or below 4°C and falling. • Install the breather membrane over the rafters. Fix battens to the side of the rafters to …

Sep 12, 2020 · I want to install some insulation in my loft and have been looking at wedging Kingspan / Celotex between the rafters. The rafters are 95mm deep and my understanding is …