Existing flat roofs can be upgraded thermally by incorporating insulation board prior to recovering as part of a strip and re-felt, overlay and single ply membrane project.
Insulation can be installed economically when over sheeting existing roofs by incorporating a glass fibre or Rockwool quilt.
When re-sheeting, insulation is normally provided by using a composite panel or by incorporating glass fibre quilt or Rockwool within the sheet build-up.
Tiled and slate roofs can be spray foam insulated to the internal surface providing close boarding is not present.
