Loft insulation and boarding in Sale: 72m² Relaid to 300mm with 20m² of Raised Boarding

The problem

The homeowner wanted a warmer house and somewhere to store things in the loft. At the free survey on 28 September 2026 our surveyor measured 72m² of loft floor.

The existing insulation was old and worn, so it needed to come out before a new, even 300mm layer could go in. The main loft area also needed a boarded floor for storage that would not squash the new insulation underneath.

What we did

1. Free survey: measured 72m² of loft floor and 20m² of boarding in the main loft area, purlin to purlin, and agreed a fixed written price.
2. Removed the old insulation across 72m² by hand, bagged it and took it away.
3. Cleaned the dust and debris out from between the joists and checked them.
4. Laid new Knauf mineral wool loft roll in two layers, the first between the joists and the second cross-laid over the top, to a depth of 300mm.
5. Fixed raised loft legs and laid 20m² of loft boards on top, so the boarded floor sits above the insulation without compressing it.
6. Took all the old insulation, off-cuts and packaging away and cleaned down the loft and the access route.

The result

The whole 72m² loft floor now has an even 300mm of new Knauf mineral wool, and the main loft area has 20m² of raised boarding for storage with the insulation underneath left at full depth.

The work was finished over 2 days, 19 and 20 October 2026. It is covered by EcoTrust's 10-year workmanship guarantee, and the homeowner has a completion certificate listing exactly what was fitted.

What the customer said

• “Good communication, friendly guys and cleaned up before they went.”

  “Great job, cleaned out all the old insulation, laid the new 300mm the insulation and boarded the loft. Good communication, friendly guys and cleaned up before they went.”

  Andrew, Sale 5/5Google review · Oct 2026