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Conservatory Roof Replacement in Penzance & Across Cornwall
Is your conservatory too hot to sit in come summer and too cold to use all winter? A tired polycarbonate or glass roof is usually the cause, and replacing it transforms the room. West Cornwall Roofing & Leadwork fits expert conservatory roof replacements across Penzance and the whole of Cornwall, turning an unusable conservatory into a comfortable, all-year room, backed by a 10-year workmanship guarantee.
NVQ-qualified in roofing & leadwork10-year workmanship guaranteeFully insured (incl. hot works)
Expert Conservatory Roof Replacements That Last
A conservatory roof replacement swaps a thin, poorly-insulated polycarbonate or glass roof for a solid, properly-insulated warm roof: a roof built up with insulation and a hard-wearing weather covering, so the room holds a steady temperature instead of baking in summer and freezing in winter.
That insulation is the whole point, and getting the build-up right is where expertise matters: a warm roof has to sit correctly on the existing frame, carry its new weight safely, and be detailed watertight where it meets the house wall. Where the existing frame can take it, Steve fits a solid warm roof in place of the old glazing. Steve is NVQ-qualified in roofing and leadwork, so the structure is sound and the lead detailing against the wall is done properly: the part that decides whether a converted conservatory stays dry. The result is a room you can finally use through far more of the year.
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The Conservatory Roof Work We Carry Out
Whatever your conservatory and however you want to use it, these are the conversions we are most often asked for:
Warm-roof conversion with a GRP or EPDM finish
Where the frame suits it, the existing polycarbonate or glass roof is replaced with a solid, insulated warm-roof structure finished in fibreglass (GRP) or EPDM rubber. Lightweight, hard-wearing and a clean, modern finish, ideal where a flat or low-pitch covering suits the room.
Warm-roof conversion with a slate or tile finish
A solid, insulated lean-to roof finished in slate or tile to match the rest of your house, so the converted conservatory looks like a natural extension rather than an add-on. The traditional choice for period and slate-roofed Cornish homes.
Insulated, all-year comfort
Every conversion is built around a properly-insulated warm-roof structure, so the room stays usable in the heat of summer and the cold of winter, not just spring and autumn.
Velux & roof window installation
Roof windows fitted into the new roof to bring in light from above while keeping the room's temperature steady, with the covering cut and dressed neatly around them and the flashing fitted watertight.
Velux replacement & repairs
Replacing failed or leaking roof windows and reflashing the surrounds, whether as part of a conversion or as a standalone job.
Watertight wall detailing
The lead flashing and abutment where the conservatory roof meets the house, dressed properly by a leadwork specialist so the join stays sealed for decades.
Recent Conservatory Roof Work
Photos of recent conservatory roofs projects across West Cornwall are being added.
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What Our Customers Say
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Read more on GoogleWhy a Warm Conservatory Roof Pays Off
You get a room you can use far more of the year.A properly-insulated warm roof tackles the summer-greenhouse, winter-icebox problem, so the conservatory becomes a comfortable, usable room rather than a space you avoid half the year.
Your heating works harder for you.Insulation keeps warmth in during winter and heat out in summer, so the room stops draining your heating and stays comfortable for less.
It's quieter, too.A solid roof cuts the drumming of rain on polycarbonate that makes so many conservatories unusable in Cornish weather.
Complete peace of mind.Built and detailed by a qualified, fully insured roofer and backed by a 10-year workmanship guarantee, so you know the conversion is watertight and built to last.
How a Conservatory Roof Conversion Works
01
Get in touch
Call Steve or send a message about your conservatory and how you'd like to use the room.
02
Free inspection & expert advice
Steve checks the existing roof and frame, confirms it can carry a warm roof, and recommends the right finish (GRP, EPDM, slate or tile) for your conservatory and your home.
03
Clear written quote
An exact, no-obligation quote that sets out the structure, the finish and exactly what's included.
04
The conversion
The old polycarbonate or glass roof is removed, the insulated warm-roof structure built, the chosen covering laid, and the wall detailing dressed watertight in lead.
05
Watertight, guaranteed, tidy
The room transformed, the site cleared, and the work backed by our 10-year workmanship guarantee.
Why choose us
Why Choose Us for Your Conservatory Roof
A conservatory roof conversion is part insulation job, part roofing job, and the roofing is where most go wrong. The new roof has to be detailed watertight where it meets the house wall, and that's exactly where our expertise lies: Steve is NVQ-qualified specifically in leadwork, so the flashing and abutment against the wall are dressed in lead to last, not sealed with mastic and hoped for. Whichever finish suits your conservatory, the work follows the relevant British Standard: BS 6229 for the flat-roof code of practice on GRP and EPDM conversions, BS 5534 for slate and tile, so the roof is specified to stand up to Cornwall's exposed coastal weather.
You're also in fully insured hands (public liability, employers' liability and hot-works cover) with over 10 years' hands-on roofing experience across West Cornwall and a 10-year workmanship guarantee on the work. Expert build, expert detailing, and a conservatory you can finally enjoy through far more of the year.
- Expert training & NVQ qualifications
- NVQ-qualified specifically in leadwork
- Fully insured incl. hot works
- 10-year workmanship guarantee
- Free inspection & clear written quote
Meet the roofer
About the Roofer, Steve Biggs
Conservatory roof conversions are carried out by Steve Biggs, owner of West Cornwall Roofing & Leadwork. Steve has over 10 years' roofing experience across Penzance and West Cornwall, and is NVQ-qualified in roofing and leadwork, holds a flat-roofing certificate and a CSCS card, and is certified in working at height and asbestos awareness. He fits warm-roof conversions in GRP, EPDM, slate and tile, and installs, replaces and repairs Velux roof windows.
“Most conservatories are unusable half the year because the roof does nothing: too hot in summer, too cold in winter, and deafening when it rains. Put a proper insulated warm roof on, detail the lead against the wall right, and suddenly it's the best room in the house.”Steve Biggs, owner and lead roofer
Conservatory Roofs Across West Cornwall
We replace and convert conservatory roofs throughout West Cornwall, across the towns and villages we know inside out:
How Our Conservatory Roof Quotes Work
Every conservatory is different, so an accurate price starts with a proper look. What shapes a conservatory roof quote is the size and shape of the conservatory, the condition of the existing frame and whether it can carry a warm roof, the finish you choose (GRP, EPDM, slate or tile), how much wall and lead detailing is involved, and whether any roof windows are being fitted or replaced.
What you can always count on: a free inspection, a clear written quote that sets out the structure, the finish and what's included, and an expert recommendation on the right conversion for your room and your home, so you know exactly what's being done, why, and what it costs before any work starts.
Frequently asked questions
Why is my conservatory too hot in summer and too cold in winter?+
It's almost always the roof. A thin polycarbonate or glass roof has little insulation, so it lets heat pour in through summer and lets it escape through winter. Replacing it with a solid, insulated warm roof is what makes the room comfortable and usable through far more of the year.
What is a warm-roof conversion?+
It is replacing your old polycarbonate or glass conservatory roof with a solid, properly-insulated roof structure, finished in GRP, EPDM, slate or tile. The insulation holds the room at a steadier temperature, so your conservatory becomes a proper, usable room rather than a greenhouse half the year.
Can you match the new roof to my house?+
Yes. A slate or tile warm-roof finish can be matched to your existing roof so the converted conservatory looks like a natural part of the house. Where a flat or low-pitch covering suits better, a GRP or EPDM finish gives a clean, modern result. Steve recommends the right one at the free inspection.
Will a new conservatory roof really cut the noise?+
Yes, a solid, insulated roof stops the drumming of rain on polycarbonate that makes so many conservatories unusable in Cornish weather, so the room is much quieter as well as warmer.
Do you fit and repair Velux roof windows?+
Yes, Steve installs new roof windows as part of a conversion to bring in light from above, and also replaces and repairs failed or leaking Velux windows as a standalone job, reflashing the surround so it stays watertight.
Is the work guaranteed?+
Yes, every conservatory roof conversion is backed by a 10-year workmanship guarantee, and Steve is fully insured including hot-works cover. So the new roof, and the work behind it, is properly protected.
Related Services
01Flat Roofing
The GRP and EPDM systems used on flat and low-pitch warm-roof conversions.
GRP FibreglassEPDM Rubber
02Roof Replacement
A full re-roof when the covering above the room has reached the end of its life.
Full Re-RoofsNew Builds
03Roof Repairs
Leaks and storm damage on conservatory roofs and beyond, diagnosed at the source.
Leak RepairsStorm Damage
Get a Conservatory You Can Use All Year
Turn a room you can't use into one you don't want to leave. Get expert advice and a clear written quote for a warm-roof conversion from a qualified, fully insured roofer, backed by our 10-year workmanship guarantee.
Call Steve on 07769 322677·Get a free quote online
West Cornwall Roofing & Leadwork
Penzance, West Cornwall, TR18 3PU
Phone: 07769 322677
Email: steve.westcornwallroofing@gmail.com
Hours: Mon to Fri 7:30am to 4:30pm, Sat 7:30am to 1pm
Last updated: 11 June 2026