I need to board out my loft for storage and also boiler access, however the previous owners have (fairly recently I guess) put a ton of fibreglass roll insulation up there, 2 layers thick, on top of the manky old stuff.
All the insulation needs to come up anyway as we've got a ton of electrical work going on as well. So I was thinking of fitting the new fibreglass roll between the rafters, rather than chuck it. This would give me a warmer loft. My builder friend then started throwing phrases like kingspan and Jablite at me, which I assume are rigid insulation products I could fit under the 'floor' of the loft when it's boarded.
Will this lead to problems with regard to ventilation, or damp? Is there anything else I need to do to make this work properly? what's the best way to hold the fibreglass roll in place? I was thinking of putting nails or screws in the rafters and tieing between them with wire or rope - I don't see the point of boarding over the rafters.
The property is 60's terrace, with approximately 6'-7' to the apex - I want to maximise the headroom, thus I'm reluctant to batten across the roof joists and raise the loft floor any more than I need to.
All the insulation needs to come up anyway as we've got a ton of electrical work going on as well. So I was thinking of fitting the new fibreglass roll between the rafters, rather than chuck it. This would give me a warmer loft. My builder friend then started throwing phrases like kingspan and Jablite at me, which I assume are rigid insulation products I could fit under the 'floor' of the loft when it's boarded.
Will this lead to problems with regard to ventilation, or damp? Is there anything else I need to do to make this work properly? what's the best way to hold the fibreglass roll in place? I was thinking of putting nails or screws in the rafters and tieing between them with wire or rope - I don't see the point of boarding over the rafters.
The property is 60's terrace, with approximately 6'-7' to the apex - I want to maximise the headroom, thus I'm reluctant to batten across the roof joists and raise the loft floor any more than I need to.
