Smart Home Energy 
If your loft has thin or no insulation, Knauf Earthwool 200mm rolls are a DIY fix that can cut heating bills by hundreds a year — just measure your loft area and order enough rolls to cover it.
Problem it solves
Reduces heat loss through the loft to cut heating bills by adding a 200mm insulation layer between or on top of ceiling joists.
Who it's for
Homeowners with uninsulated or under-insulated lofts who want to meet Building Regs standards or add a top-up layer to existing insulation.
Why we recommend
Quality flexible glass mineral wool quilt, will definitely help reduce heat loss.
Savings
- Typical annual saving
- £200–£350/year depending on existing insulation level, loft size, and heating costs
- Payback period
- 1–2 years
