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Compare free conservatory roof repair quotes from Portsmouth roofers. Covering Fratton, Southsea, Copnor, Milton, North End, Cosham...
Updated: 30 Dec 2025
30 Dec 2025
Lantern Roof Leak Repair — Lantern / Skylight, 14m² (Hilsea). Leak at lantern base due to failed seal. Full scaffold needed due to height/obstructions. leak only visible during prolonged downpours.
29 Dec 2025
Milton: Lantern Base Seal Renewal on larger roof (~20m²) Lantern / Skylight. Leak at lantern base due to failed seal. Conservatory roof fragile - boards required. recurring issue despite previous patch.
28 Dec 2025
Milton: Counter-Flashing Install/Refix on 15m² Flashing / Wall Abutment. Sealant-only detail failing at movement joint. Through garage, internal ladder route. Small business owner needs urgent repair.
23 Dec 2025
Replace Perished Gaskets — Gaskets & Trims (uPVC), 24m² (Hilsea). Debris trapped under trims creating water track. Through garage, internal ladder route. Homeowner preparing to sell.
22 Dec 2025
After Storm Damage: Warm Roof Leak Investigation — Tiled Warm Roof (L-shaped), approx. 8 square metres (Baffins). Poorly sealed eaves trim. Steep garden slope complicates ladder setup. persistent since spring.
19 Dec 2025
Overflow Baffle/Deflector Install — Box Gutter / Drainage (Lean-to), 16m² (Southsea). Backfall towards the lantern base. Front driveway, easy ladder access.
15 Dec 2025
Skylight Flashing Reseal — Lantern / Skylight (T-shaped), small roof (10m²) (Cosham). Sealant smear over old silicone not bonding. Over conservatory extension — requires roof ladder. persistent since spring.
14 Dec 2025
Glass Unit Repack & Reseal in Cosham on about 18m² Glass conservatory roof. Issue: Degraded perimeter sealant along glass edge. Access: Full scaffold needed due to height/obstructions. reported again after temporary DIY repair failed.
12 Dec 2025
Glazing Bar Cap Refit in Milton on larger roof (~14m²) Gaskets & Trims (uPVC) conservatory roof. Issue: Missing clips allowing cap lift. Access: Steep garden slope complicates ladder setup. first seen this winter.
7 Dec 2025
Fratton: Glazing Bar Cap Refit on 15m² Gaskets & Trims (uPVC). Incompatible sealant used previously – not bonding. Front driveway, easy ladder access. noticed during recent storms. Insurance inspection pending.
6 Dec 2025
Hilsea: Warm Roof Leak Investigation on 14m² Tiled Warm Roof. Loose verge detail letting in wind-driven rain. Neighbour access arranged. reported again after temporary DIY repair failed. Insurance inspection pending.
4 Dec 2025
End Cap Replacement & Reseal in Eastney on small roof (8m²) Polycarbonate conservatory roof. Issue: Screw fixings pulling through after wind uplift. Access: Access only via conservatory itself (internal). Insurance inspection pending.
| Job | Basis | Typical Range |
|---|---|---|
| Replace one polycarbonate panel | per panel | £150 - £300 |
| Replace one glass roof unit | per unit | £250 - £500 |
| Box gutter clean & reseal | job | £120 - £250 |
| Lead flashing renewal | job | £200 - £400 |
| Replace glazing bar gaskets | per bar | £80 - £150 |
| End cap replacement set | set | £60 - £120 |
| Internal reseal against leaks | job | £150 - £300 |
| Full polycarbonate roof re-sheet | 20m² | £1,800 - £2,800 |
| Lightweight tiled roof conversion | 20m² | £6,000 - £10,000 |
| Add insulation & plaster ceiling | 20m² | £1,500 - £2,500 |
Guide prices only. Actual quotes vary by access, substrate condition, detailing, and material choice.
| Type | Number | Share |
|---|---|---|
| Flashing / Wall Abutment | 3 | 10% |
| Polycarbonate | 5 | 17% |
| Box Gutter / Drainage | 4 | 13% |
| Lantern / Skylight | 5 | 17% |
| Tiled Warm Roof | 4 | 13% |
| Glass | 4 | 13% |
| Gaskets & Trims (uPVC) | 5 | 17% |
(Number of quote requests received in and around Portsmouth over the previous 12 weeks)
30 Dec 2025
Loose capping on lantern over Lantern / Skylight re-fixed; ridge joint sealed; minor draughts eliminated. Autumn/Winter weather likely contributed.
| Step | Description | Minutes |
|---|---|---|
| Inspect | Identify loose caps/fixings. | 8 |
| Refix | Tighten; replace missing fixings. | 21 |
| Seal | Seal ridge/corners; test. | 9 |
Estimated time: ~38 minutes
20 Dec 2025
Ponding in box gutter serving Box Gutter / Drainage eliminated by local reline and improved fall; outlets enlarged where possible. Autumn/Winter weather likely contributed.
| Step | Description | Minutes |
|---|---|---|
| Clean & assess | Remove sludge; check joints and fall. | 21 |
| Reline/grade | Install liner; adjust battening to improve fall. | 38 |
| Outlet & test | Resize/clear outlet; water test. | 18 |
Estimated time: ~77 minutes
We always recommend hiring qualified Portsmouth conservatory roof specialists for leaks, replacements or structural issues. For confident homeowners with the right tools and PPE, small maintenance jobs such as clearing gutters, replacing end caps, or resealing trims may sometimes be attempted yourself.
We’re still gathering supplier information for Portsmouth.
In the meantime, you can search for conservatory roof suppliers in Portsmouth on Google Maps.
Note: Listings are for convenience only; we do not recommend or endorse any individual supplier.
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