Project Case Study
Transforming into an All-Season Garden Room in Stalham
Client
Roger London
Location
Herring Gardens, Stalham
Primary Service
Warm Roof & Roof Lantern
Completion Date
October 2025

The Challenge
Roger London wanted to transform an existing space into a fully functional room that could be used comfortably all year round. The existing structure was limited by a dated polycarbonate roof that offered poor thermal regulation.

Identifying the Problem
What was the existing condition of the structure/material?
The original polycarbonate roof and frames were thermally inefficient, making the room too cold in winter and too hot in summer.
What were the client's pain points or goals?
The client initially desired a Tapco tile roof conversion, but the existing structure could not achieve the required 14.5deg pitch. A creative, high-performance alternative was needed to meet building standards and the client's goals.
The Solution
Assessment:
Jordann and the team recommended an EPDM hand-cut warm roof construction. This allowed for a high-performance flat roof solution that met all insulation requirements while providing a sleek, modern profile.
Materials Used:
- Roofing: EPDM Rubber Membrane for its seamless, weather-proof longevity.
- Insulation: High-grade rigid PIR insulation and insulated plasterboard for maximum thermal retention.
- Feature: High-spec Roof Lantern to maximise natural light and add external "kerb appeal."
- Fenestration: New patio doors and redesigned frames for improved access and efficiency.
- Finish: Exterior Cladding added as a final design choice to unify the new structure with the home.

Implementation:
We stripped the old polycarbonate roof and frames, replacing them with a bespoke timber warm roof structure. After installing the EPDM membrane and the central roof lantern, the interior was fitted with insulated plasterboard and professionally plastered. To complete the aesthetic, we installed exterior cladding to tie the new elements together seamlessly.
Result Focus:
The project delivered a room that complies fully with current building standards that maintains a consistent temperature throughout the seasons.
Lifespan
20-30 Years
The proven durability of EPDM rubber roofing.
Visual impact
Aesthetics
The roof lantern and exterior cladding transformed a basic extension into a great garden room.
Performance
Efficiency
The warm roof construction provides a high thermal R-value, making the room "all-season" ready.
Client feedback
Client Quote
“We wanted a room we could use all year. It’s now a bright, cosy, and fully functional space.”
Explore transformations & exterior makeovers
We believe our projects speak for themselves. Dive into our portfolio to see a comprehensive collection of our recent work across Stalham, North Walsham and Norfolk Broads. Whether you need an EPDM warm roof or a custom roof lantern, we deliver quality that lasts.