Hi,
I'm looking at installing underfloor insulation:
1930s red-brick house
Suspended floor with crawl space
Good air brick ventilation
100mm depth floor joists
My intention is to use a combination of Rockwool and recycled plastic loft insulation.
The simplest/easiest option would be to use 100mm thickness between joists supported by netting. Would only 100mm be worthwhile? The latest regs suggest 170mm, I think. What would be the difference in benefit in reality?
Or, I could use 200mm of insulation that would be 'bulging' out below the joists.
Alternatively, I could use 100mm and add a second layer of 100mm across the joists. This would cover the bottom of the joists. Could covering the joists cause future problems with moisture?
Any advice would be gratefully received.
I'm looking at installing underfloor insulation:
1930s red-brick house
Suspended floor with crawl space
Good air brick ventilation
100mm depth floor joists
My intention is to use a combination of Rockwool and recycled plastic loft insulation.
The simplest/easiest option would be to use 100mm thickness between joists supported by netting. Would only 100mm be worthwhile? The latest regs suggest 170mm, I think. What would be the difference in benefit in reality?
Or, I could use 200mm of insulation that would be 'bulging' out below the joists.
Alternatively, I could use 100mm and add a second layer of 100mm across the joists. This would cover the bottom of the joists. Could covering the joists cause future problems with moisture?
Any advice would be gratefully received.