GRP Flat Roof Installations for New Builds & Extensions
20+ years experience • Fully insured • Installed across Lincolnshire & surrounding areas
Built for New Build & Extension Projects
At Harker Flat Roofing, we specialise in high-quality GRP flat roof installations for new builds, home extensions, garage conversions, and commercial development projects across Lincolnshire and surrounding areas.
Our roofing systems are installed to a professional standard using durable fibreglass materials designed for long-term waterproof protection and a clean modern finish.
Whether you're building a new extension or managing a full new-build project, we deliver reliable flat roofing systems built to last.
Why GRP Roofing is Ideal for New Builds
Seamless waterproof finish
Modern architectural appearance
Long lifespan with low maintenance
Ideal for extensions and contemporary builds
Strong durable surface built for long-term performance
Recent New Build & Extension Projects
A selection of recent GRP flat roofing installations completed for extensions, new builds, and residential development projects across Lincolnshire and surrounding areas.
Alongside GRP flat roofing installations, we also carry out the structural timber work required for many new build and extension projects.
This includes roof joists, decking installation, sky light installation, structural preparation, and roofing build-ups completed to provide a strong, reliable foundation for long-lasting flat roofing systems.
Structural Roof Preparation & Timber Work
✔ Structural roof joist installation
✔ OSB decking installation
✔ Roof preparation for GRP systems
✔ Extension and new build roofing structures
We regularly work alongside our network of builders, extension contractors, and property developers on residential and commercial projects.
Request A Free Quote
We aim to respond to all enquiries within 24 hours.
Send over your plans, measurements, or project details for a free no-obligation quotation.