Independent UK guidePrices updated September 2026

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T-shape conservatory glass roof cost

Reviewed byZaib Khan
Updated onSeptember 2026

A glass roof on a medium T-shape conservatory typically costs £5,100 to £8,200, fitted.

Small£5,100£3,900 to £6,300
Medium£6,700£5,100 to £8,200
Large£8,400£6,500 to £10,300

A T-shape has a wide lean-to or Edwardian section along the house with a projection sticking out from the middle, often with its own Victorian or gable front. These are usually the largest conservatories and the most complex roofs.

Glass roofs on a T-shape conservatory

The large glass area makes solar control and ventilation important. Opening roof vents are worth considering.

  • Two valleys, several hips and long gutter runs make labour the biggest part of the price.
  • Large glazed floor areas get very hot under polycarbonate or glass, so these rooms benefit most from a solid roof.
  • Bigger roofs are more likely to need structural calculations and extra posts.

Price by size

SizeLowTypicalHigh
Small up to about 3m x 3m£3,900£5,100£6,300
Medium about 4m x 3.5m£5,100£6,700£8,200
Large about 5m x 4m or more£6,500£8,400£10,300

Other roofs for a T-shape conservatory

RoofMedium T-shapeBest for
Tiled roof£10,900 to £15,400Using the room every month of the year
New polycarbonate roof£3,900 to £6,100The lowest cost fix for a leaking roof
Hybrid roof£9,600 to £14,800Warmth with pools of daylight
Insulated roof panels£2,600 to £5,400A warmer room on a tighter budget
Orangery conversion£14,000 to £35,000A full extension feel without building a new room
Old glass roofStandard double glazing, the typical before
Glass roofKeeping the light and the view of the sky
Tiled roofUsing the room every month of the year
New polycarbonate roofThe lowest cost fix for a leaking roof
Hybrid roofWarmth with pools of daylight
Shorter bars on both sides mean a steadier room. Solid bar is the best published figure, pale bar the range across grades and tints. U-value in W/m²K; solar is the g-value or solar transmission. Figures from maker data (Ultraframe, Thermotec and others); hybrid and orangery are estimated from their solid and glazed areas. How we built this.

Extras to budget for

Internal insulated pelmet£900 to £900A plastered perimeter band that hides the frame head and adds insulation.
New fascias and guttering£150 to £775Most solid roof systems come with their own gutter and fascia.
Removal and disposal of the old roof£120 to £800Usually included. Skip hire alone is about 120 to 300 pounds.
Scaffolding or access£340 to £900Needed on taller or awkward roofs, especially over patios and steps.
New frames and dwarf walls£2,000 to £4,000If the old frames or walls are failing. Big jobs can cost more.

By region

Questions

How much is a glass roof on a T-shape conservatory?

A glass roof on a medium T-shape conservatory typically costs £5,100 to £8,200 fitted, with most quotes near £6,700. Small T-shape conservatories start around £3,900, and large ones reach about £10,300.

Why does a T-shape roof cost more than other shapes?

Two valleys, several hips and long gutter runs make labour the biggest part of the price.

What should I check before choosing a glass roof for my T-shape conservatory?

The large glass area makes solar control and ventilation important. Opening roof vents are worth considering.

How long will it take?

Expect 2 to 4 days on a medium T-shape conservatory, and a day or two more on this shape if it is large or needs frame work.

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