Flat Roofs
GRP Fibreglass Roofing
GRP gives a flat roof a single, seamless waterproof layer with no joints to fail — when it is installed in the right conditions.
About this service
GRP Fibreglass Roofing from Master Roofing & Flat Roofing
GRP (glass reinforced plastic) roofing is built up on site: a resin is applied to a prepared deck, reinforced with a glass-fibre mat and finished with a coloured topcoat. The result is a continuous, joint-free surface.
GRP is a precise process. It depends on a dry, sound deck, correct resin mixing and suitable weather, so preparation and planning are just as important as the lay itself.
Where GRP is commonly used
- Single-storey rear extensions
- Garage roofs
- Dormer roofs
- Porches and bay roofs
- Balconies and walkways (with suitable specification)
- Replacing failed felt roofs
Options
How a GRP roof is installed
Deck preparation
Checking or replacing the deck with suitable boards, laid to the correct falls.
Edge trims
Pre-formed trims fitted to drip edges, upstands and gutter edges.
Laminate layer
Resin and glass-fibre matting applied and consolidated to remove air.
Topcoat
A coloured, weather-resistant topcoat that gives the finished surface.
Benefits and practical considerations
- GRP needs dry conditions and suitable temperatures during installation.
- Upstands and abutments must be detailed carefully where the roof meets walls.
- Like any roof, GRP benefits from occasional checks and keeping outlets clear.
Our process
How we handle your grp fibreglass roofing enquiry
Tell us about your roof
Call, email or use our quote form to describe the problem or project.
Arrange an assessment if needed
Most roofing work needs a look at the roof to understand its condition.
Receive your quotation
A clear quotation setting out the scope of work and what's included.
Approve and schedule
Once you're happy, we agree a start window and carry out the work.
Request a quote
Tell us about your roof
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Learn moreNeed grp fibreglass roofing? Let's talk.
Tell us what your roof needs and our team can help you identify the next steps.