A Conservatory That Behaves Like an Extension
Starting from scratch? We design, build and install a brand new conservatory engineered around the solid Eurocell Equinox warm roof from day one — Profile 22 frames with A-rated units as standard, groundworks to plastering, and every bit of the Building Control paperwork handled by us.
The Light of a Conservatory, The Feel of a Real Room
For thirty years the deal was simple, and slightly unfair: you could have a conservatory, which was wonderful in May and useless in December, or you could have an extension, which was a proper room but cost three times as much and cut the daylight in half. A warm roof conservatory refuses to pick. Glazed walls and garden views along the outside; a solid, fully insulated roof over your head. Bright, but not a greenhouse.
These are built from scratch and designed around the roof from day one — which matters more than it sounds. We're not adapting a structure that was drawn up for polycarbonate. The frames, the base, the glazing and the ring beam are all specified knowing a solid roof is going on top, so nothing is compensating for anything. The roof is the Eurocell Equinox warm roof at U-values as low as 0.15 W/m²K — house-roof territory, not window territory. The frames are energy-efficient Profile 22 uPVC with A-rated glazed units as standard. Inside: a plastered and skimmed ceiling with downlights, or tongue-and-groove if you'd rather.
Best for anyone adding a completely new year-round living space — a dining room, a snug, a home office you can still think in during a heatwave. And because the room is built to full extension standards, you can do something an ordinary conservatory legally can't: open it up to the house and run it off your central heating (compared below).
Every build is designed, constructed and finished by our own team from our Martlesham base, in gardens across Kesgrave, Ipswich, Woodbridge, Felixstowe and throughout Suffolk and Essex.
Already have a conservatory? Don't build a new one. If your frames and base are sound, a replacement conservatory roof gets you the same warm roof for a fraction of the cost. And if you'd rather keep a glazed roof and that open-to-the-sky feeling, our Victorian, Gable and Lean-To ranges are built with the Ultraframe performance glass roof.
Every project starts with a free, no-obligation design visit and quotation, and is protected by our 10-year guarantee.
One Team, One Price, Start to Finish
Choose How It Joins Your Home
Style comes later — Victorian, Gable, Lean-To or P-shaped, we build them all with a warm roof. The decision that actually shapes the build is whether this becomes part of the house, or a room of its own. Both are fully approved and certificated; the difference is how you'll live in it, and what it costs.
Open to the House
We form a structural opening through to your kitchen or living room and the two spaces become one. Radiators or underfloor heating run off your existing system. No doors to shut, no threshold to step over, no "shall we go and sit in the conservatory?" — it's simply the back of your house now.
| Connection | Structural opening; lintel or steel as designed |
|---|---|
| Heating | Runs off your central heating |
| Classification | Single-storey extension, fully certificated |
| On the floor plan | Habitable floor area — counts when you sell |
| Roof | Equinox warm roof, as low as 0.15 W/m²K |
| Extra involved | Structural design, thermal & ventilation calcs |
A Room of Its Own
Your existing back wall and doors stay exactly where they are, and the new room sits behind them with its own heating controls. Simpler to build, quicker on site and noticeably cheaper — and a genuinely better answer if you want a home office, a music room, or somewhere the door closes on the noise.
| Connection | Existing external-quality doors retained |
|---|---|
| Heating | Independent heating & controls |
| Classification | Single-storey extension, fully certificated |
| Disruption | Lower — no opening formed in the house |
| Roof | Equinox warm roof, as low as 0.15 W/m²K |
| Budget | The most cost-effective route to a warm roof build |
Conservatory or Extension? Legally, It's an Extension
Worth understanding before you compare quotes, because it isn't obvious. A conservatory only escapes Building Regulations if at least 75% of its roof is translucent. Put a solid warm roof on it — even on a brand new build — and that exemption never applies in the first place. Your warm roof conservatory is, legally, a single-storey extension from the moment it's drawn.
That's a feature, not a problem. It's precisely why this room can do things an ordinary conservatory can't:
- Planning permission: usually not needed. Most builds sit comfortably within Permitted Development — single storey, within the height and projection limits, under half the garden. Listed buildings and conservation areas are the exception, and we'll flag it.
- Building Regulations: always needed. Structure, insulation, ventilation and electrics, designed and signed off properly. We make the application, meet the inspector and hand you the completion certificate.
- No thermal separation rule. An exempt conservatory must stay behind closed external-quality doors with its own heating. Yours doesn't have to — which is what makes opening it up possible.
- It counts as a room. Estate agents list a certificated warm roof build as habitable floor space rather than a bonus room. That's where a good deal of the value uplift comes from — and why the certificate matters at resale.
A word of caution: if a quote you've been given treats a new solid-roof build as an exempt conservatory, or leaves Building Control out entirely, that's not a saving. It's an unsigned-off structure that will surface the day your buyer's solicitor asks for paperwork.
Lead Times
Warm Roof Conservatory Price Guide
The prices below are honest, indicative ranges for a complete build kept as a separate room — groundworks and base, Profile 22 frames with A-rated glazing, the Equinox warm roof, plastering, electrics, Building Control approval and professional installation. No hidden extras. Opening through to the house typically adds £3,500 – £6,000 depending on the structural opening required. Your exact quote depends on size, style, groundworks, glazing and finishes.
| Style | Typical Size | Estimated Price Range |
|---|---|---|
| Lean-To Warm Roof | Approx. 3.0m × 3.0m | £19,500 – £26,000 |
| Victorian or Edwardian Warm Roof | Approx. 3.5m × 3.5m | £22,000 – £29,000 |
| Victorian or Gable Warm Roof (Most Popular) | Approx. 4.0m × 4.0m | £25,500 – £34,000 |
| Large P-Shaped or L-Shaped Warm Roof | Approx. 4.5m × 4.0m+ | £30,000 – £41,000 |
Customisation & Upgrades
- Open Through to the House: A structural opening into the kitchen or living room, with the room on your central heating. The upgrade that changes how the house works, not just how it looks.
- Roof Windows & Glazed Panels: Set into the Equinox roof to put daylight exactly where you want it — the advantage of designing the whole thing from scratch.
- Tiles, Frames & Guttering: 16 tile finishes across steel, Envirotile, composite slate and Slateskin; white, woodgrain foils or Anthracite Grey frames, plus eight fascia and five guttering colours.
- Door Choices: French, sliding patio or aluminium bifold doors to open the room to your garden.
- Dwarf Walls or Full Glass: Brick-matched dwarf walls for a traditional look, or full-height glazing for maximum light.
Recent Warm Roof Conservatory Installations
Solid insulated warm roofs installed on conservatories across Suffolk.
Frequently Asked Questions
What Our Warm Roof Customers Say
Reviews related to our warm roof conservatories
We'd been quoted £48k for a brick extension. This is the same room, twice as bright, and we're still using it every evening in February. Best money we've ever spent on the house.
Groundworks to handover in under a month, one team throughout, and they found a drain nobody knew about and sorted it without drama. The dwarf wall matches the house perfectly.
They talked us into knocking through to the kitchen and it's transformed how we live. I work from home in there and it's quiet, warm and doesn't cook me at two in the afternoon.
Straight answers from the first visit — including telling us the separate-room option would suit us better than the open-plan one they'd have made more on. All the certificates arrived without us chasing.
Thinking About a Warm Roof Conservatory? Let's Chat.
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We'll answer all your questions and take you through the next steps in a relaxed, no sales pressure environment — and your design visit and quotation are always free.
