Flat roofs should preferably be insulated from above to reduce the risk of condensation problems. The advantages of installing flat roof insulation from above include reducing disruption inside your home and maintaining the existing head room in the affected room.

If the existing roof is sound, a layer of rigid insulation boards can be added to the external surface. This is covered with a weatherproof layer of bitumen felt, rubber EPDB or Glass reinforced Polyester, although the latter two options may require a contribution towards the cost.

If the existing flat roof is worn it can be stripped back to the roof timbers and the insulation boards fastened down to the timber. The flat roof is then finished as above.

Flat Roof Insulation Grants are Available Now