Dulwich Roofing · Homeowner guide
A Cost Breakdown of GRP Roofing: Is It Worth the Investment?
The cost of a GRP roof is the cost of a complete roof build-up, not simply resin and fibreglass. Two roofs of the same area can need very different preparation. This breakdown explains the items to compare; it is not a fixed price list.
Where the GRP budget goes
- Strip-off and disposal depend on the existing covering and number of layers.
- Decking, insulation and falls may need renewal before laminating begins.
- Edge trims, upstands, rooflights and outlets add labour and detailing costs.
GRP is better value when the substrate and junctions are correct from the outset, rather than repaired after coating.
An itemised quote is easier to compare
| Cost item | What changes the price |
|---|---|
| Existing roof | Strip-off, disposal and investigation of concealed damage. |
| Substrate | Compatible decking, support, insulation and formation of falls. |
| GRP system | Specified reinforcement, resin, finish and compatible components. |
| Details | Trims, upstands, rooflights, outlets and wall connections. |
These are cost components, not published rates or a quotation. Ask for a measured, site-specific price, including applicable taxes, disposal and the treatment of unforeseen work. A reliable budget starts with a defined scope for your property.