Plymouth's Conservatory Roof Specialists
Leaking Conservatory Roof
A leaking conservatory roof is usually caused by failed seals, cracked panels or deteriorated ridge bars. Temporary repairs rarely last. The permanent solution is to replace the entire roof with a solid, insulated tiled roof system that eliminates every potential leak point.
- Warm in winter, cool in summer
- No more leaks or condensation
- Fully insulated tiled roof systems
No pushy sales · Same-day reply · 10-year insurance-backed guarantee
A simple, considered approach.
Why Is Your Conservatory Roof Leaking?
A leaking conservatory roof is one of the most frustrating problems a homeowner can face. Water drips onto furniture, pools on the floor, the carpet starts to smell and the room becomes unusable. If you're putting buckets out every time it rains, it's time for a permanent solution rather than another patch repair.
Understanding why your roof leaks helps you make the right decision about how to fix it. Here's what we see most often when we survey leaking conservatories across Plymouth, Devon and Cornwall.
Why most older conservatory roofs stop working.
Almost every project we visit starts with the same set of complaints.
Too hot in summer
Glass and polycarbonate roofs trap solar heat and make the room unusable.
Too cold in winter
Poor insulation lets warmth escape and pushes up your heating bills.
Leaks & condensation
Aging seals and single-skin roofs let damp in and cause recurring leaks.
Loud during rain
Thin roof materials amplify noise so the room never feels settled.
Common Causes of Conservatory Roof Leaks
Most leaks come from one of six places. On a roof that's 10+ years old it's common to find several of these failing simultaneously — which is why patch repairs so rarely hold up.
- Perished rubber seals — the gaskets that seal polycarbonate and glass panels harden and shrink over time, creating gaps. By far the most common cause.
- Cracked polycarbonate sheets — UV exposure makes polycarbonate brittle over 10–15 years. Cracks develop and allow water through, sometimes invisibly until you spot the drip.
- Corroded ridge bars — the metal bars that cap the roof joints can corrode or separate, especially where two metals meet (galvanic corrosion).
- Movement in the structure — thermal expansion and contraction opens small gaps between panels and frame; over decades these gaps grow.
- Blocked internal guttering — channels within the roof frame can block with debris, causing water to overflow back into the room.
- Failed lead flashing — where the conservatory meets the house wall, lead flashing can pull away or the mortar around it can crumble.
A complete insulated warm-roof system.
Engineered to building-reg standards and finished beautifully inside and out.
The Permanent Fix for Leaking Roofs
While individual seals and panels can be replaced, these repairs are temporary. If one part of your roof has failed, the rest is likely to follow soon. A complete roof replacement is the cost-effective, long-term solution:
- Removes all the materials and joints that are prone to leaking
- Replaces them with a solid, weather-tight tiled roof with no weak points
- Includes proper code-4 lead flashing and weatherproofing at the wall junction
- Covered by a comprehensive 10-year insurance-backed guarantee
- Tiles carry a separate 40-year manufacturer guarantee
What Goes On Instead
The replacement is a complete insulated warm-roof system. Frame stays, base stays, windows stay — only the failing roof comes off.
The system
- SupaLite™ engineered warm-roof frame, sized to your conservatory
- High-performance PIR insulation panels (U-value 0.15–0.18 W/m²K)
- Lightweight composite roof tiles in your chosen colour
- Code-4 lead flashing properly chased into the brickwork at the wall junction
- Internal plastered ceiling, ready for paint
None of these components has the failure modes that caused your old roof to leak. There are no rubber seals between transparent panels, no UV-degrading polycarbonate, no internal box-gutters to block. It's a fundamentally different — and more reliable — system.
Before & after — a real leaking roof fix.
Drag the slider to see how a leaking glass conservatory roof was permanently replaced with a fully insulated tiled roof.
Devon cottage — leaking glass roof replaced with a watertight, insulated tiled roof.
Drag the slider to compare
Four clear steps from first visit to finished room.
Survey
We visit, measure and discuss exactly how you want to use the room.
Specify
A clear written quote — materials, finish and timeline up front.
Install
Old roof off, fully insulated warm-roof system on, by our own crew.
Finish
Plastered ceiling, full clean-down and walk-through with you.
A conservatory you actually want to spend time in.
Cool in summer
No more trapped heat — the room stays comfortable on the hottest days.
Warm in winter
Insulated to modern building-reg standards so you keep the heat in.
10 year guarantee
Insurance-backed guarantee, plus a 40-year guarantee on the tiles.
Fast install
Most projects are completed in just 2–4 days by our own crew.
Benefits of Fixing Your Leaking Roof Permanently
- No more leaks — a solid tiled roof has no panels, seals or joints to fail
- Protect your home — stop water damage to floors, walls and furnishings
- Prevent mould — remove the damp conditions that encourage mould growth
- Gain a usable room — your conservatory becomes comfortable and reliable in all weather
- Save money long-term — no more repair costs, call-outs, or temporary fixes
- Resale value — buyers heavily discount a conservatory with a known leak history
Lived with the leak for two winters thinking 'I'll get round to it'. Wish I hadn't waited. The new roof is bone dry, beautifully insulated and the conservatory is finally a room we use rather than walk past.
What does it cost?
Honest, typical price ranges so you can plan with confidence — every quote is bespoke after a free home survey.
The Real Cost of a Leaking Roof
It's tempting to live with a leak rather than face replacement cost — but the maths usually favours replacement once you account for everything:
- Repeat patch repairs — £6,000 each, often every 1–2 years on an ageing roof
- Damaged carpets, furniture, electronics — frequently several hundred to several thousand pounds
- Higher heating bills — an old leaky roof is also a poorly-insulated one, costing extra every winter
- Lost use of the room — for many families this is the biggest cost of all
- Resale value — buyers discount conservatories with leak history heavily
Replacement price guide
- Small lean-to: from £6,000 fitted
- Edwardian: from £6,000
- Victorian: from £6,000
- Large P-shape: from £6,000
Free written quote, no pressure, no obligation.
Plymouth, Devon & Cornwall.
A locally based crew covering the South West — most projects are within 30 minutes of our Barbican workshop.
Local Help Across Plymouth, Devon & Cornwall
We're a Plymouth-based local crew, not a national franchise. Most jobs are within a 30-minute drive of our Barbican workshop. Recent leaking-roof replacements include homes in:
- Plymouth — Mutley, Mannamead, Peverell, Hartley, Crownhill, Plymstock, Plympton, Eggbuckland
- South Hams — Ivybridge, Yealmpton, Newton Ferrers, Modbury
- South-East Cornwall — Saltash, Torpoint, Callington
- West Devon — Tavistock, Yelverton
Why our warm roof outperforms a traditional conservatory.
Frequently asked questions.
Should I repair or replace a leaking conservatory roof?+
If your roof is over 10–15 years old and has developed leaks, replacement is usually the better investment. Repairs fix individual points of failure, but the rest of the roof is the same age and likely to develop similar problems. Replacement solves everything at once and comes with a 10-year insurance-backed guarantee.
How long will a patch repair last?+
Seal replacements and patch repairs typically last 1–3 years on an ageing conservatory roof before new leaks appear elsewhere. A full insulated tiled roof replacement lasts decades and the tiles themselves carry a 40-year manufacturer guarantee.
Can you fix a leak without replacing the whole roof?+
We focus on complete roof replacement rather than temporary repairs. Our experience is that homeowners who invest in replacement are far happier long-term than those who keep patching an ageing roof — and the cost over five years is often lower.
What are the most common causes of a leaking conservatory roof?+
In order: perished rubber seals between roof panels, cracked or brittle polycarbonate sheets, corroded ridge and hip bars, failed flashing where the conservatory meets the house wall, and blocked internal guttering. Most ageing roofs have several of these failing at once.
Can a leak cause damp or mould in my conservatory?+
Yes — and quickly. A persistent leak combined with poor ventilation creates ideal conditions for mould on plaster, fabric and timber, often within weeks. Mould can trigger asthma and respiratory issues, so addressing the leak promptly matters for health, not just the building.
How much does a replacement cost?+
All conservatory roof replacements start from £6,000 fully fitted, regardless of size or shape. Final cost depends on roof shape, tile finish, number of skylights and any internal finishing. Every quote is bespoke after a free home survey.
Will my insurance cover a leaking conservatory roof?+
Buildings insurance occasionally covers sudden, accidental damage (e.g. a falling tree branch), but gradual deterioration of an ageing roof is excluded by virtually every UK policy. Replacement is almost always self-funded — but it's a one-off cost rather than an ongoing problem.
How long does the replacement take?+
Typically 2–4 days from old roof off to plastered ceiling finished. We work as a single dedicated crew so the job runs continuously and your home stays watertight throughout — even overnight.
Why does my conservatory leak more in heavy rain than light rain?+
In heavy rain, water pools faster than the existing seals and box gutters can drain it away, then finds the path of least resistance — often through the smallest gap in a perished seal. Light rain runs off before it has time to find a way in. It's a classic sign that the roof drainage is failing.
Do you cover my area?+
We cover Plymouth, Plympton, Plymstock, Ivybridge, the South Hams, Saltash, Torpoint, Tavistock and across South Devon and South-East Cornwall. Travel is included in the quoted price.
Got questions?
Straight answers to the things people ask us most.
Free Brochure
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Everything you need to know about our SupaLite™ insulated warm-roof system — tile finishes, internal options, the 2–4 day installation process, prices from £6,000 fully fitted, and our 10-year insurance-backed guarantee.
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