Warmer Roof Self-Build Extension Kits for the Trade
Trade professionals across the UK are choosing modular construction to speed up extension builds, reduce site complications and gain greater cost certainty. Warmer Roof’s Prefab Extension Kits provide a fully compliant, high-performance alternative to traditional brick-and-block extensions—designed specifically to support profitable, repeatable trade installations.
Built to Install Faster
Warmer Roof’s prefabricated modular pod system allows experienced installers to complete the main structure in as little as five days. The dry-build process removes many of the delays caused by wet trades and weather conditions, keeping projects moving and sites under control.
“Our system is designed to give installers confidence on every job,” says the Warmer Roof technical team. “It delivers consistent build quality, predictable timelines and a cleaner, more efficient build process.”
A Complete, Compliant Structural Kit
Each self-build extension kit is supplied as a full structural solution and manufactured to meet UK Building Regulations and national building control standards. Key features include:
- High Thermal Performance
160mm wall construction with 125mm multifoil honeycomb insulation and 52.5mm insulated PIR plasterboard. - Flat and Pitched Roof Systems
Structural-grade timber roofs finished with EPDM rubber, synthetic slate or shingle tiles. - Approved and Guaranteed
Pre-approved by national building control and supported by a 25-year guarantee.
Complimentary Glazing and Roof Options
Warmer Roof extension kits can be specified with a range of complimentary options that enhance light, usability and overall project value:
- Roof Windows – Improve daylight and ventilation
- Roof Lanterns – Ideal for maximising light in flat-roof extensions
- Aluminium Bi-Folding Doors – Designed to integrate seamlessly with slimline Visofold systems
All complimentary elements are engineered to work within the modular structure, minimising on-site adjustment and installation time.
Trade-Pro Advantages
Fixed-cost kits provide certainty in an unpredictable materials market, helping protect margins from the outset. Factory manufacture means no on-site waste, no skips and minimal disruption.
A watertight shell can be achieved quickly, allowing follow-on trades to start sooner and shortening overall programme times.
Built to Sell to Today’s Homeowners
Warmer Roof self-build extension kits deliver excellent thermal performance, helping homeowners benefit from lower energy costs and year-round comfort—key selling points in the modern extension market.
For builders and installers looking to complete extensions faster, quote with confidence and deliver consistently high-quality results, Warmer Roof offers a proven trade solution.
Download the Trade Brochure
Request a Trade Quote