Glass links & glass box roofs in Horsham: what is involved?
For Horsham homes and buildings we offer glass links & glass box roofs: frameless glass links joining old and new buildings. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Many South East homes have been extended more than once, and an old dome over an earlier extension is often due for replacement. In Horsham, as anywhere, glass links & glass box roofs are the usual choice for listed and period buildings where the old wall should stay visible.
From Horsham to Crawley, Horley and Haywards Heath, the same survey-first process applies: measure, specify, fix the price, then fit.
Choices for your Horsham project
- Frameless or slim-framed glass
- Concealed gutters and drainage
- Solar-control and low-iron glass
- Structural glass beams and fins
- Heated glass on some systems
- Structural glass roof with concealed fixings
- Visually light connection between buildings
What to check first
- Listed building consent or planning permission is commonly needed
- Abutments with old masonry need careful weathering
Consents for glass links & glass box roofs in Horsham
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
Under Approved Document L, a rooflight added to an English home must achieve at least 2.2 W/m²K (horizontal plane), and a roof window 1.4 W/m²K or Window Energy Rating Band B. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
Our planning guide covers each nation in more detail.
Guide prices for Horsham
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Fully frameless link with glass beams | £20,395 – £35,995 | £16,995 – £29,995 |
| Glass roof and glazed sides Typical | £13,195 – £20,395 | £10,995 – £16,995 |
| Glass roof between existing walls | £9,595 – £13,195 | £7,995 – £10,995 |
From enquiry to finished job
- Tell us what you have. Send the RH12 postcode, a rough size and a couple of photos.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Neighbouring towns
Other services in Horsham
Common questions
Can a glass link be warm enough to use all year?
With insulated glass units, solar control and good detailing, yes — though it will always be brighter and more exposed to temperature swings than a solid room.
How is the glass joined to the old wall?
Usually by a slim channel or flashing set into the masonry, sealed and weathered so the old wall can move without cracking the glass seal.
Do glass links need planning permission?
Often, yes — and listed building consent if either building is listed. We can provide drawings and product data for your application.
Do you fit glass links & glass box roofs in Horsham?
Yes. We survey and fit glass links & glass box roofs in Horsham and across West Sussex. Send your postcode and we will offer a survey date when we reply.
Will I need planning permission in Horsham?
English householder permitted development (Class C) normally covers rooflights that stand no more than 0.15 m proud of the roof plane and stay below the highest part of the roof.
