Products
Roof and wall insulation
Insulation for built-up roof and wall systems, supplied with the sheets, liners, brackets and fixings it goes with, so the whole build-up arrives together. Tell us the U-value you need and we'll work out the depth.
- For built-up roofs and walls
- Mineral wool quilt and slab
- Depth set by your U-value
- On the same order as your sheets
Choosing insulation
Where the insulation goes
In a built-up roof or wall, the insulation sits between the liner sheet on the inside and the outer sheet, held at the right depth by brackets and spacer bars. A vapour control layer on the warm side keeps damp air out of it.
If you'd rather the insulation came ready-made, insulated panels have it bonded inside, between two steel faces, and go up in one layer.
Quilt or slab
Mineral wool quilt comes in rolls and is the usual choice for built-up roofs: it's light, quick to lay between the brackets and fills the space without gaps.
Mineral wool slab is denser. It's used in walls and where the specification asks for more acoustic or fire performance, as mineral wool doesn't burn.
How deep
The thicker the insulation, the lower the U-value and the warmer the building. The bracket depth sets how much fits, so the two are chosen together. New buildings need to meet the Building Regulations for their use: tell us the U-value on your drawings or your building control approval and we'll quote the build-up to meet it.
Questions we’re asked
What insulation goes in a built-up metal roof?
Usually a mineral wool quilt or roll laid between the liner sheet and the outer sheet, held at the right depth by spacers. The thickness depends on the U-value the building needs.
Should I use insulated panels or a built-up roof?
Insulated panels go on in one layer and are quicker. A built-up roof is assembled on site in layers and can be more flexible on thickness and acoustics. We supply both, so ask us which suits your building.