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Conservatory roof replacement in Portsmouth
What a new conservatory roof costs in Portsmouth in 2026, how the local weather affects each option, and free quotes from installers who cover PO1, PO2, PO3.
What a new conservatory roof costs in Portsmouth
Medium conservatory (about 4m x 3.5m), fitted, adjusted for South East labour costs.
| Roof | Typical in Portsmouth | Range | Fitting |
|---|---|---|---|
| Tiled roof | £10,850 | £8,350 to £13,650 | 3 to 6 days |
| Glass roof | £5,900 | £3,950 to £7,900 | 2 to 4 days |
| New polycarbonate roof | £4,400 | £3,050 to £5,900 | 1 to 2 days |
| Hybrid roof | £10,750 | £7,450 to £14,250 | 4 to 7 days |
| Insulated roof panels | £3,500 | £2,050 to £5,200 | 1 to 3 days |
| Orangery conversion | £27,700 | £15,800 to £39,550 | 7 to 15 days |
South East prices run about 13% above the UK middle, reflecting higher labour rates than most regions. Your quotes depend on the shape, the survey and the system. Full cost guide.
A typical tiled roof in Portsmouth (£10,850) works out at about 3.1% of the average semi-detached house price in Portsmouth (£349,827, HM Land Registry 2026-07). That is the room you gain for the money, without building an extension.
Replacing a conservatory roof in Portsmouth: what is different here
Portsmouth is mostly on Portsea Island and is one of the most densely populated cities in the UK, with about four in ten homes built before 1919, mostly terraces. Back yards are small, so conservatories tend to be narrow lean-tos off the kitchen. A tiled roof with glazed panels keeps light in the room behind, and access through a terrace can affect the price.
Portsmouth at a glance
Portsmouth has about 223,324 residents, the 2nd largest of the 52 Hampshire towns and villages in our data, and sits in Portsmouth, Hampshire. Gosport is 3.5 miles away and Southampton 16 miles to the north west. Postcodes here start PO1, PO2, PO3, PO4 and others.
The middle home in Portsmouth was built around 1930 to 1939. 19% of homes went up between 1965 and 1999, the decades when most British conservatories were added, below the UK average of 31%. Many conservatories here were added later to older houses, so ask each installer to check the frames and base can carry a heavier roof. Bungalows are uncommon here (1% of homes against 10% nationally), so most conservatories sit on two-storey houses. With 39% of homes in flats, conservatories here are concentrated in the 13% of homes that are detached or semi-detached.
The average home in Portsmouth sold for £251,220 in July 2026, up 1.3% on a year earlier, below the South East average of £380,878. Detached homes average £518,657 and semi-detached £349,827.
Why conservatories in Portsmouth get too hot and too cold
Summers here are among the sunniest in the UK (about 219 hours of sunshine in July), so overheating is the main complaint. A solid roof, or solar control glass with a low g-value, makes the biggest difference. The chart shows the average daytime high and night time low for each month in the Met Office's England South East and Central South climate district, the closest match for Portsmouth. July afternoons here average 22.3°C against 19.6°C across the UK. Inside a south facing polycarbonate conservatory the air runs far hotter than outside on a sunny day, and colder on a clear winter night.
Homes in Portsmouth
Which roof makes most sense in Portsmouth?
With around 219 hours of July sunshine, summer heat is the bigger problem in Portsmouth. A solar control glass roof (£3,950 to £7,900 here) keeps the light and cuts the glare, but a lightweight tiled roof (£8,350 to £13,650) or a hybrid roof does far more to stop the room overheating. Blinds and films help with glare but not much with heat. Tiled vs glass roofs.
Terraces make up 46% of homes in Portsmouth. Conservatories on terraced houses are usually narrow lean-tos against the kitchen, so a solid roof with one or two glazed panels is worth asking about to keep light in the room behind.
Building control and planning in Portsmouth
For a solid or tiled roof your installer applies for building control approval, either through Portsmouth Council's building control team or a registered building control approver, and you should get a completion certificate at the end. Keep it: a buyer's solicitor will ask for it when you sell.
Areas around Portsmouth
Installers covering Portsmouth usually work across these places too. Enter your postcode in the form to check.
- Gosport 3.5 mi west
- Waterlooville 4.2 mi north east
- Havant 4.8 mi north east
- South Hayling 5 mi south east
- Fareham 5.6 mi west
- Denmead 5.7 mi north
- Lee-on-the-Solent 5.7 mi west
- Emsworth 6.3 mi east
- Horndean 6.8 mi north east
- Ryde 7.7 mi south west
Nearby local guides
Conservatory roof questions in Portsmouth
How much does a conservatory roof replacement cost in Portsmouth?
In Portsmouth a lightweight tiled roof for a medium conservatory typically costs £8,350 to £13,650, a solar control glass roof £3,950 to £7,900, and insulated roof panels £2,050 to £5,200, fitted. Prices in South East run about 13% above the UK middle because of higher labour rates than most regions.
Which conservatory roof suits the Portsmouth climate?
Summers here are among the sunniest in the UK (about 219 hours of sunshine in July), so overheating is the main complaint. A solid roof, or solar control glass with a low g-value, makes the biggest difference. In this part of the country, July afternoons average 22.3°C with around 219 hours of sunshine in July, and February nights average 1.8°C (Met Office 1991 to 2020 averages).
Can a conservatory roof be replaced in winter in Portsmouth?
Yes. Roof replacements go ahead all year, and the old roof is normally off and the new one weathertight within a day or two. Portsmouth averages about 43 air frosts a year, with February the coldest month at 1.8°C overnight, so ask how the room will be protected if the job runs over a night. Replacing a roof in winter.
How old are conservatories in Portsmouth?
No register records conservatories, but the housing gives a good clue: 19% of homes in Portsmouth were built between 1965 and 1999, and the middle home dates from around 1930 to 1939. Most conservatories were added between the 1980s and 2000s, so many local roofs are now 20 to 40 years old, past the usual life of polycarbonate. How long a roof lasts.
Will a glass conservatory roof overheat in Portsmouth?
It can. July brings around 219 hours of sunshine here, and a south or west facing glass roof gains a lot of heat on a clear afternoon. If you want glass, ask for solar control glass with a low g-value (the share of the sun's heat that gets through) and compare it with a tiled or hybrid roof. Solar control glass explained.
Which areas around Portsmouth can get quotes?
Quotes are available across the PO1, PO2, PO3, PO4, PO5, PO6, PO16 postcodes, and in nearby Gosport (3.5 miles), Waterlooville (4.2 miles), Havant (4.8 miles), South Hayling (5 miles). Enter your full postcode in the form and we pass it to installers who cover it.
Sources: Met Office UK climate averages 1991 to 2020; HM Land Registry UK House Price Index; VOA Council Tax: Stock of Properties; ONS; postcodes.io. Contains public sector information licensed under the Open Government Licence v3.0.
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