Dulwich Roofing · Homeowner guide

Replacing Felt with GRP in Dulwich: When It Makes Sense

Replacing old felt with GRP can be suitable, but an upgrade should solve identified problems rather than follow a material trend. An aged felt roof and a newly specified felt system are not the same comparison. Look at complete replacement options.

When changing system makes sense

• The existing covering has reached the point where wider renewal is justified.
• The substrate can be prepared to suit the proposed GRP specification.
• Roof details and intended use fit the new system.

Ask for the reason behind the recommendation and compare a suitable modern felt alternative where appropriate.

Compare the same scope

Ask each contractor to price the same requirements: access, strip-off, decking, insulation, falls, edges, outlets and making good. Differences in these items can be more significant than the choice of covering. Check whether a quoted guarantee covers the material, workmanship or both, and retain its conditions with the final specification.