Plymouth's Conservatory Roof Specialists
Replace Glass Conservatory Roof
Replacing a glass conservatory roof with a solid, insulated tiled roof eliminates overheating in summer, freezing in winter, and excessive rain noise — without touching your existing frame, windows or doors. The whole conversion takes 2–4 days and transforms your conservatory into a comfortable, energy-efficient room you can use all year round.
- 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.
Upgrade Your Glass Conservatory Roof in Plymouth
Glass conservatory roofs may look attractive in the brochure, but living under one in Plymouth is a different story. If your glass-roofed conservatory is too hot in summer, too cold in winter, or creates blinding overhead glare, replacing the glass with a solid insulated tiled roof is the most effective and most permanent solution.
The good news: it's a fast, non-disruptive job. Your existing frame, windows, base and doors all stay exactly where they are. Only the roof comes off — and a fully insulated, plastered tiled roof goes on in its place. The whole transformation takes 2–4 days.
At Southside Better Roofs we've helped hundreds of Plymouth homeowners replace glass conservatory roofs with modern, thermally efficient alternatives. Every project comes with Building Regs sign-off and a 10-year insurance-backed guarantee.
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 Glass Conservatory Roofs Stop Working
Even modern self-cleaning glass with a low-emissivity coating struggles to deliver house-like comfort. Glass is a poor insulator and an excellent transmitter of solar radiation — both of which work against you in a UK climate. The longer you live under one, the more obvious the problems become:
- Greenhouse effect — glass roofs trap solar heat, making conservatories unbearably hot in summer (we've measured 45°C+ in Plymouth conservatories on a clear July afternoon)
- Rapid heat loss — even modern glass has a U-value around 1.0–1.5 W/m²K versus 0.15 for an insulated tiled roof; heat escapes 5–10× faster, which you pay for in winter heating bills
- Glare — direct overhead sunlight makes the room uncomfortable for working, watching TV or reading, and damages furniture
- Rain noise — rain on glass is noisy and disruptive, especially in heavy Plymouth downpours
- Cleaning difficulty — glass roofs need regular cleaning to look good; access is difficult and can be dangerous
- Condensation — temperature differences between inside and outside cause moisture to form on the inside of the cold glass, which then drips back down
- Sealed unit failure — most glass roofs start misting between panes after 12–15 years; replacing individual units is rarely cost-effective
- UV fading — even with low-E coatings, soft furnishings fade noticeably after a couple of summers
Should You Replace Your Glass Roof? — A Quick Decision Guide
Not every glass roof needs replacing tomorrow. Use this rough guide to work out where yours sits:
- Replace now — leaks, misted units, mould or condensation, room unused for months at a time, glass over 15 years old
- Replace soon — uncomfortable in summer or winter, audible rain noise, glass 10–15 years old, planning to sell within 3 years
- Wait and monitor — glass under 8 years old, room used comfortably year-round, no leaks or condensation
If you're in either of the first two categories, the comfort and energy savings of a tiled roof typically pay back inside 3–5 years.
A complete insulated warm-roof system.
Engineered to building-reg standards and finished beautifully inside and out.
How We Replace a Glass Conservatory Roof
We carefully remove your existing glass roof and replace it with a purpose-built insulated tiled roof system. The process is straightforward and well-rehearsed — we do this every week of the year:
- Free home survey to assess your conservatory and discuss options (tile colour, system, skylights, lighting)
- Custom design to match your home's style and architecture
- Professional removal and disposal of the existing glass roof
- Installation of a new insulated warm-roof system in 2–4 days
- Internal finishing with a flat plastered ceiling and optional integrated lighting
- Code-4 lead flashing properly chased into the wall junction
- Building Regulations submission and sign-off
- Full clean-up and handover with a 10-year insurance-backed guarantee
Glass vs Self-Cleaning Glass vs Tiled — Side by Side
The three options most homeowners weigh up when their existing glass roof has had its day:
| Feature | Old Glass | Self-Cleaning Glass | Insulated Tiled |
|---|---|---|---|
| U-value | 1.5–2.0 W/m²K | 1.0–1.2 W/m²K | 0.15–0.18 W/m²K |
| Summer temperature | Very hot (45°C+) | Hot (35–40°C) | Comfortable |
| Winter warmth | Very cold | Cold | Warm — single radiator |
| Glare | Severe | Severe | Eliminated |
| Rain noise | Loud | Loud | Silent |
| Condensation | Constant | Reduced | Eliminated |
| Maintenance | Constant cleaning | Light cleaning | None |
| Lifespan | 10–15 years | 15–20 years | 40+ years |
| Typical cost | from £6,000 | from £6,000 | from £6,000 |
Self-cleaning glass costs about half what a tiled roof does, but it only solves the cleaning problem — not the heat, the cold, the noise or the condensation. For most Plymouth homeowners replacing their roof, tiled is the better long-term value.
What Replaces the Glass
A glass roof comes off in panels. What goes back on is a fundamentally different system — an insulated warm roof, finished with lightweight composite tiles.
The build-up, top to bottom
- Lightweight composite tiles — Tapco slate, Metrotile pantile or Britmet plain tile, with a 40-year guarantee
- Breather membrane and battens — keeps the structure ventilated and water-tight
- High-performance PIR insulation — typically 100–150mm thick, achieving U-values of 0.15–0.18 W/m²K
- SupaLite™ engineered frame — LABC-approved, lightweight and sized to your existing conservatory
- Plasterboard ceiling — finished with skim plaster ready for paint
Optional Velux-style roof windows are flashed in with the same code-4 lead detail used on house roofs, so they don't leak and the ceiling is plastered around them seamlessly inside.
What to Expect During Installation — Day by Day
Most glass-to-tiled conversions take 2–4 days from old roof off to plastered ceiling finished. Here's exactly what happens:
Glass strip-out & structural prep
Scaffold goes up first thing. We carefully lift off the old glass panels (usually 4–8 panels depending on shape), strip the ridge bar and remove the old gutters. Your existing frame is inspected and any small repairs made. The room is sheeted overnight so it stays watertight.
New roof structure & insulation
The lightweight engineered rafters, ridge and SupaLite insulated panels go on. The roof is fully weathertight by the end of the day — even if it rains, you stay dry inside.
Tiles, lead flashing & guttering
Composite tiles are fixed to the external face, lead flashing is dressed and chased into the brickwork at the wall junction, and new gutters and downpipes are connected up. Any Velux skylights are fitted and flashed at this stage.
Plastered ceiling & finish
Internal plasterboard, skim plaster and any downlights or electrics are completed. We do a full clean-down, take the scaffold away and walk you through the finished room. Building Regs paperwork follows in the post.
Larger Victorian, gable and P-shape conservatories can take an extra day or two, but the principle is the same: one dedicated crew on site continuously, and your home stays watertight throughout.
Before & after — a real Plymouth glass roof replacement.
Drag the slider to see how replacing a tired glass conservatory roof with an insulated tiled roof transforms the look and feel of the room.
Plymouth — old glass conservatory roof replaced with a lightweight insulated tiled roof.
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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 Your Glass Conservatory Roof
- Temperature control — comfortable in every season without expensive heating or cooling
- No more overhead glare — natural light through windows without the harsh roof-glare that ruins TV viewing and working from home
- Silent in rain — solid construction eliminates rain drumming completely
- No more cleaning — tiled roofs are virtually maintenance-free; no more risky ladder work or window cleaner bills
- No condensation — the warm internal surface eliminates the cold spot where moisture used to form
- Better appearance — looks like a genuine extension of your home from the garden
- Lower energy bills — superior insulation means less heating required; many customers find a single radiator now does the job
- Furniture protection — no more UV fading or sun damage to sofas, carpets and artwork
- Frame and base retained — lower disruption and lower cost than a brand-new conservatory or extension
We had self-cleaning glass fitted six years ago and it was still too hot to use in July. The tiled roof has completely fixed it. Two Veluxes keep it bright and the room is finally usable in every season.
What does it cost?
Honest, typical price ranges so you can plan with confidence — every quote is bespoke after a free home survey.
How Much Does Replacing a Glass Conservatory Roof Cost?
Realistic guide prices for fully-fitted glass-to-tiled conversions in Plymouth:
- Lean-to (3m × 3m) — from £6,000
- Edwardian / square (3.5m × 3.5m) — from £6,000
- Victorian (3-facet) — from £6,000
- P-shape / gable end — from £6,000
- Velux-style skylights — £450–£650 each fitted
What's included in the price
- Free home survey and structural assessment
- Full scaffolding for the duration of the project
- Removal and disposal of your old glass roof
- The complete SupaLite™ insulated tiled roof system
- Internal plastered ceiling, ready to decorate
- New gutters, downpipes and 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
Replacing a conservatory roof is a significant investment, so we keep payment terms flexible and transparent:
- 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.
Glass Roof Conversions Across Plymouth & The South West
We've replaced hundreds of glass conservatory roofs across Plymouth and the surrounding area. Recent jobs include:
- Plymouth — Plymstock, Plympton, Mannamead, Mutley, Peverell, Crownhill, Eggbuckland, Hartley
- South Hams — Ivybridge, Wembury, Yealmpton, Modbury
- South-East Cornwall — Saltash, Torpoint, Callington
- West Devon — Tavistock, Yelverton
Travel is included in every quote — no postcode surcharges. The person who quotes the job is the same person who oversees the install.
Why our warm roof outperforms a traditional conservatory.
Frequently asked questions.
Will I lose natural light if I replace my glass conservatory roof?+
You'll keep plenty of natural light through your conservatory's windows and doors — what you lose is the harsh overhead glare. Most customers actually prefer the change. If you want to keep more daylight, we fit Velux-style roof windows or glazed feature panels into the new roof. Two skylights in a 3.5m × 3.5m roof keeps the room beautifully bright while still cutting solar heat gain by around 90%.
Is it worth replacing a glass conservatory roof?+
If your conservatory goes unused for months because it's too hot or cold, you're wasting valuable living space. A solid roof replacement typically costs significantly less than a new extension and adds genuine usable space to your home — often paying back in usage and energy savings within 3–5 years. The Building Regs certificate also helps at sale time.
What happens to my existing conservatory frame?+
In almost every case, your existing conservatory frame, windows and doors are retained. We replace only the roof. This keeps cost down, minimises disruption and means your conservatory stays watertight throughout the install.
How much does it cost to replace a glass conservatory roof?+
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 the new roof be heavier than my old glass one?+
No — and that surprises a lot of people. The lightweight insulated tiled systems we fit weigh 30–35 kg/m², which is roughly the same or less than the original glass roof and aluminium frame combined. Existing conservatory bases and frames cope without modification in the vast majority of cases. We confirm load capacity at the survey.
Can I add roof windows to keep the light in?+
Yes — Velux-style roof windows are a popular addition. Two skylights in a 3.5m × 3.5m roof keeps the room beautifully bright while still cutting solar heat gain by around 90%. Each fitted skylight is from £6,000.
Do I need planning permission to replace a glass conservatory roof?+
Almost never — replacing a glass conservatory roof on the same footprint normally falls under permitted development. Building Regulations sign-off is usually required because the thermal envelope changes, and we handle the application and the building inspector's visit as part of the project.
How long does the install take?+
Most glass roof replacements are completed in 2–4 days. Your home stays watertight throughout — even overnight. We work as a single dedicated crew and leave the site spotless on the final day.
Will it stop the rain noise?+
Completely. A solid insulated tiled roof absorbs rain noise just like a normal house roof. The drumming you get on glass becomes a soft background sound — heavy rain becomes barely noticeable indoors.
Self-cleaning glass — should I just upgrade to that instead?+
Modern self-cleaning glass is an improvement on old glass but it still has a U-value around 1.0 W/m²K (5–7× worse than tiled), still produces solar gain in summer and still creates rain noise. It's a half-measure that costs £6,000. Tiled is the once-and-done solution and typically only 25–40% more expensive — and it lasts twice as long.
What if I have a hybrid glass-and-tile roof on now?+
We can replace these too. The tiled portion usually comes off and we fit a complete new insulated roof across the full footprint. The cost is similar to replacing a full glass roof — sometimes slightly less because part of the structure is already solid.
How old is too old for a glass conservatory roof?+
If your glass roof is over 15 years old, it's almost certainly worth replacing. Sealed units start to fail (misting between panes), aluminium glazing bars corrode, gaskets perish and silicone joints crack. Past 20 years, leaks become a question of when, not if. Below 10 years, the glass is usually still sound — but the comfort problems are exactly the same, which is the real reason people switch to tiled.
Will replacing my glass roof add value to my home?+
Yes. Estate agents commonly note glass conservatories as 'unusable in summer/winter' on property listings, which puts buyers off. A tiled-roof conservatory is listed as a year-round room or a third reception, which directly improves appeal and surveyed value. The Building Regs certificate that comes with the install also reassures buyers' solicitors.
Got questions?
Straight answers to the things people ask us most.
Free Brochure
Get Our Free Conservatory Roof Replacement Brochure
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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