Plymouth's Conservatory Roof Specialists
Leaking Conservatory Roof Repair Plymouth
The most effective way to repair a leaking conservatory roof is to diagnose the cause and — if the roof is over 10 years old — replace it entirely with a solid, insulated tiled roof. Patch repairs on old polycarbonate or glass roofs typically buy 1–2 years before the next leak appears. A full replacement provides a permanent, weathertight solution backed by a 10-year guarantee.
- 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.
Permanent Solutions for Leaking Conservatory Roofs in Plymouth
A leaking conservatory roof is more than an inconvenience — it can damage flooring, furniture, and electrics, and encourage mould growth. If your conservatory roof leaks when it rains, it's a sign the roof has reached the end of its useful life. The seals, panels, ridge bars and flashings have all aged together; once one fails, the others are usually not far behind.
At Southside Better Roofs we don't just slap silicone over the symptom. We diagnose where the water is actually coming in, give you an honest answer on whether a patch repair is worth doing, and replace the roof properly when that's the right call. Most of our customers have already paid two or three other roofers to "fix" the leak before they call us.
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.
Why Conservatory Roofs Leak — Diagnosing the Cause
After surveying hundreds of leaking conservatories across Plymouth and the South West, we see the same handful of failure points over and over:
- Failed rubber seals (around 60% of leaks) — the gaskets between polycarbonate or glass panels and the frame harden, shrink and crack with age, allowing water to penetrate
- Failed lead flashing at the house wall (around 15%) — where the conservatory meets the brickwork, lead flashing pulls away or the mortar around it crumbles
- Corroded ridge and hip bars (around 15%) — the aluminium bars that join roof panels at the ridge separate, twist or corrode where two metals meet
- Cracked polycarbonate sheets (around 5%) — UV exposure makes polycarbonate brittle over 10–15 years; it cracks, sometimes invisibly, and lets water through
- Blocked internal box-gutters (around 5%) — leaf debris builds up in the internal channels and water overflows back into the room rather than running away outside
- Thermal movement — years of expansion and contraction open small gaps everywhere on an ageing roof
Patch repairs to any one of these usually buys 1–3 years before the next leak appears somewhere else on the same ageing roof. Most leaking conservatories we replace have at least three of the issues above at the same time.
How to Find the Leak Yourself (Safely, From Inside)
Water rarely enters where it appears inside — it tracks along the underside of the roof and drops at the lowest point. Before calling anyone, you can do a quick diagnosis from indoors. Do not go on the roof — conservatory roofs are not designed to bear weight.
- Check on a sunny day first — shine a torch up at the roof from inside and look for daylight gaps along seals, around the ridge and at the wall junction
- Watch during light rain, not heavy — gentle rain shows you exactly where the water is entering; in a downpour everything looks like it's leaking
- Check the wall junction first — most "ceiling" leaks actually originate at the lead flashing where the conservatory meets the house wall
- Inspect the ridge from inside — water marks on the underside of the central ridge bar usually mean the cap or end-cap has failed
- Look for cracked or yellowed polycarbonate — once polycarbonate goes brittle, it can crack invisibly under hairline stress
- Photograph everything — send the pictures with your enquiry; it speeds up our survey and quote
A complete insulated warm-roof system.
Engineered to building-reg standards and finished beautifully inside and out.
Repair vs Replace — Which Is Right For Your Roof?
Patching can be the right call on a younger roof. Replacement is the right call on an older one. This honest decision guide is what we'd give a friend or family member:
| Your situation | Best course of action | Typical cost |
|---|---|---|
| Roof under 8 years, single fresh leak | Patch repair the specific failure | £200–£500 |
| Roof 8–12 years, one or two leaks | Patch repair, plan replacement within 2–3 years | £200–£500 now |
| Roof 12+ years, recurring leaks | Full replacement — patch repairs not cost-effective | from £6,000 |
| Polycarbonate, brittle/yellowed | Full replacement — material has failed | from £6,000 |
| Multiple leak points | Full replacement — whole-roof failure | from £6,000 |
| Storm damage, otherwise sound roof | Targeted repair, possible insurance claim | £200–£800 |
| Misted glass units, no visible leak yet | Replace within 12 months — leaks imminent | from £6,000 |
Why Replacement Solves It Permanently
When the roof is past its useful life, a complete replacement solves every issue at once:
- Removes all the materials and joints that are prone to leaking — no more seals, gaskets or panel joints to fail
- Replaces them with a solid, weather-tight tiled roof with no panels or polycarbonate
- Includes proper code-4 lead flashing at the wall junction, chased into the brickwork properly
- Adds full insulation, eliminating the condensation that often makes a "leak" worse than it really is
- Covered by a comprehensive 10-year insurance-backed guarantee
- No more emergency call-outs, no more buckets in the conservatory
What Goes On Instead
We fit the LABC-approved SupaLite™ warm-roof system — a lightweight, engineered insulated roof finished with composite tiles in your chosen colour.
- SupaLite engineered frame — lightweight, sized to your existing conservatory
- PIR insulation — high-performance, achieving U-values from 0.18 down to 0.15 W/m²K
- Lightweight tiles — Tapco, Metrotile or Britmet, all carrying 40-year manufacturer guarantees
- Code-4 lead flashing at the wall junction, fully chased and pointed
- Plastered ceiling inside, ready for paint
All of this together replaces the failure-prone layers of your old roof with components designed to last 40+ years.
What to Expect During the Replacement — Day by Day
Most leaking-roof replacements take 2–4 days from old roof off to plastered ceiling finished. Here's exactly what happens:
Strip-out & structural prep
Scaffold goes up first thing. We lift off the leaking glass or polycarbonate panels, strip the failed ridge bar and remove the old gutters and flashing. Existing frames are inspected and any small repairs made. The room is sheeted overnight so it stays watertight — no more drips, even on day one.
New roof structure & insulation
Lightweight engineered rafters and the new ridge are fitted, then the SupaLite insulated panels go on. The roof is fully weathertight by the end of the day — even if it rains, you stay dry inside for the first time in months.
Tiles, lead flashing & guttering
Composite tiles are fixed to the external face, fresh code-4 lead flashing is dressed and properly chased into the brickwork at the wall junction (the most common original leak point), and new gutters and downpipes are connected up.
Plastered ceiling & finish
Internal plasterboard, skim plaster and any downlights or electrics are completed — covering up any old water staining. We do a full clean-down, take the scaffold away and walk you through the finished room. Building Regs paperwork follows in the post.
Before & after — a real leaking roof repair.
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 Replacing a Leaking Conservatory Roof
- Permanent weather protection — no more leaks, drips, or water damage
- Prevent mould and damp — eliminate the moisture that causes health problems and ruins decoration
- Protect your belongings — no risk of water damage to furniture, flooring or electrics
- Year-round comfort — an insulated roof keeps the room warm and dry, not just dry
- Peace of mind — 10-year guarantee means no more worry about the next rainstorm
- No more call-out fees — repeat repair bills are gone forever
- Cleaner internal finish — old water staining disappears under the new plastered ceiling
- Better at sale time — surveyors and buyers reliably flag leaking conservatories as a defect; a fresh tiled roof with Building Regs sign-off removes the issue completely
Had a different roofer out three times in two years to patch the same leak. Southside replaced the whole roof in three days. That was 18 months ago — bone dry through every storm since.
What does it cost?
Honest, typical price ranges so you can plan with confidence — every quote is bespoke after a free home survey.
Repair vs Replace — The Honest Numbers
Patch repairs feel cheaper but rarely last on an ageing roof. Here's the typical maths over five years:
- Patch repairs — £200–£500 per visit, often needed every 1–2 years on a roof over 10 years old. Five-year cost: £600–£1,500 with no underlying improvement.
- Full replacement — from £6,000 one-off, plus zero leak-related cost for at least 10 years (covered by the insurance-backed guarantee).
- Hidden costs of leaks — damaged carpet, ruined furniture, electrical call-outs, mould treatment, redecoration. These often dwarf the cost of replacement.
Typical replacement prices
- Small lean-to: from £6,000 fitted
- Edwardian / square (3.5m × 3.5m): from £6,000 fitted
- Victorian (3-facet): from £6,000 fitted
- Large P-shape or gable: from £6,000 fitted
- Velux-style skylights: £450–£650 each fitted
What's included in the price
- Free home survey, leak diagnosis and structural assessment
- Full scaffolding for the duration of the project
- Removal and disposal of your old leaking roof
- The complete SupaLite™ insulated warm-roof system
- Internal plastered ceiling, ready to decorate
- New gutters, downpipes and code-4 lead flashing
- Building Regulations application and sign-off
- 10-year insurance-backed workmanship guarantee
No hidden extras — the headline price is the price you pay.
Finance & Payment Options
We know a leaking roof is rarely budgeted for, so we keep payment terms flexible:
- Stage payments — a small deposit secures your install date, with the balance split between start of work and completion. You never pay for work that hasn't been done.
- Spread the cost — interest-free and low-interest finance options are available on most projects through our regulated finance partner. Typical terms range from 12 months interest-free up to 10 years.
- Card or bank transfer — all major payment methods accepted, with full receipts for your records.
- No pressure, no hard sell — we'll talk through the options at the survey and let you decide in your own time.
Plymouth, Devon & Cornwall.
A locally based crew covering the South West — most projects are within 30 minutes of our Barbican workshop.
Fast Response Across Plymouth & The South West
We respond quickly to leak enquiries because we know how stressful a dripping ceiling is. Recent leak-replacement jobs have been across:
- Plymouth — Mutley, Mannamead, Peverell, Crownhill, Plymstock, Plympton, Hartley, Eggbuckland
- South Hams — Ivybridge, Wembury, Yealmpton, Modbury
- South-East Cornwall — Saltash, Torpoint, Callington, the Rame Peninsula
- West Devon — Tavistock, Yelverton, Okehampton
Most surveys are booked within 3–5 working days. If the leak is causing active damage we'll always try to prioritise. Travel is included in every quote — no postcode surcharges.
Why our warm roof outperforms a traditional conservatory.
Frequently asked questions.
Can't I just repair the leak instead of replacing the roof?+
You can attempt patch repairs, and on a roof under 10 years old it can be the right call. But if your conservatory roof is more than 10–15 years old and leaking, the materials have deteriorated to the point where further leaks elsewhere are very likely within 1–2 years. Most of our customers have already paid for two or three patch repairs before deciding a full replacement is the cheaper long-term option.
How quickly can you fix a leaking conservatory roof?+
We can usually survey your conservatory within 3–5 working days of your call and schedule the replacement within 2–4 weeks during normal periods. The installation itself takes 2–4 days. Your home stays watertight throughout — even overnight. For active leaks causing damage we'll always try to prioritise.
How do I find where my conservatory roof is leaking?+
Water rarely enters where it appears inside — it tracks along the underside of the roof and drops at the lowest point. Look first at the wall junction (lead flashing), the ridge bar (where panels meet at the apex), the rubber gaskets between panels, and any visible cracks in polycarbonate sheets. A torch shone from inside on a sunny day often reveals daylight gaps. Don't go on the roof yourself — conservatory roofs are not designed to bear weight.
What should I do right now to stop the leak?+
Place a bucket or container under the drip and a towel around the base to protect the floor. If water is running down a wall, peel back any wallpaper that's wet so it doesn't trap moisture. Turn off any electrics in the conservatory if water is near sockets or light fittings. Don't climb on the roof. Call us — we can usually be on site within a few days to assess.
Is water damage covered by the guarantee?+
Our 10-year insurance-backed guarantee covers the new roof system and the workmanship. Once fitted, our roofs are completely waterproof — no joints, no failed seals, no panels to fail — so water damage from the conservatory roof becomes a thing of the past.
How much does it cost to repair vs replace a leaking conservatory roof?+
A one-off patch repair typically costs £200–£500. A full replacement starts from £6,000 fully fitted. Most patched roofs need re-patching within 1–2 years — so over a five-year period repeat repairs commonly add up to £600–£1,500 with no underlying improvement, while a replacement comes with a 10-year guarantee and solves the comfort problems too.
What if my conservatory roof is leaking at the wall junction?+
This is one of the most common failure points and one of the hardest to patch reliably. The lead flashing pulls away from the brickwork or the mortar around it crumbles. Re-bedding the flashing can buy a year or two, but if the roof is otherwise old it often fails again within a season. When we fit a new insulated roof we install fresh code-4 lead or proprietary flashing, properly chased into the brickwork — solving the leak permanently.
Will a temporary fix tide me over until you can install?+
We can usually schedule a survey within a few days. If you have an urgent leak before then, contain it with a bucket and a length of plastic sheeting from the inside; don't go on the roof yourself. Once the survey is done we can normally fit you in within 2–4 weeks.
Do you remove the old roof and dispose of it?+
Yes — full removal and disposal is included in every quote. We take everything off-site, recycle what we can, and leave the site clean. You don't have to lift a finger.
What about the inside — will the existing plaster get damaged?+
We work mainly from the outside. Inside, we fit a brand-new plastered ceiling as part of the install, so any existing internal finish on the underside of the roof is replaced anyway. Walls and other surfaces are protected with sheeting throughout.
Will my insurance pay for 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. Spread-the-cost finance is available subject to status.
What are the most common leak points on a conservatory roof?+
In order: perished rubber seals between glass/poly panels (60% of leaks), corroded or separated ridge bars (15%), failed lead flashing at the wall junction (15%), cracked polycarbonate sheets (5%), and blocked internal box-gutters (5%). Most ageing roofs have several issues at once, which is why patching one rarely solves the problem for long.
Will my conservatory roof leak get worse over winter?+
Almost always, yes. Cold weather causes materials to contract and pulls existing gaps wider. Storm-driven rain finds its way through cracks that wouldn't leak in summer. And condensation on the cold inside surface often makes a small leak look much worse than it is. If you've spotted a leak in autumn, getting it dealt with before December is a sensible call.
Do you cover Plymouth, Devon and Cornwall?+
Yes — we cover all of Plymouth, the South Hams (Ivybridge, Yealmpton, Modbury), South-East Cornwall (Saltash, Torpoint, Callington) and West Devon (Tavistock, Yelverton). Travel is included in the quoted price.
Got questions?
Straight answers to the things people ask us most.
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