West Sussex · RH12, RH13
Roof Windows in Horsham
Roof window installation is the supply and fitting of a pitched-roof window — commonly known by the Velux brand name regardless of manufacturer — into an existing or new roof structure, including trimming the rafters, fitting the flashing kit, and making the surrounding roof covering weathertight.
In Horsham, that covers Roffey, Holbrook, Littlehaven, Denne, Trafalgar, Broadbridge Heath, Southwater, Warnham, Colgate. Horsham's town centre retains a historic core of timber-framed and Georgian buildings around the Carfax and Causeway, surrounded by Victorian villas, interwar suburbs and newer developments on the town's edges. The surrounding villages and countryside sit close to the South Downs, which shapes both the property styles and the planning context for extension and renovation work.
Coverage
Areas we cover in Horsham for roof windows
Property styles in Horsham
Horsham has a strong stock of period cottages and Victorian villas in and around the town centre, alongside 20th-century family housing in the surrounding estates and larger detached homes in the outlying villages. Extension and loft conversion potential varies significantly between the historic core and the more recent suburbs.
Planning considerations
Horsham District Council is the local planning authority. The town centre, including the Causeway, is a conservation area with a number of listed buildings, meaning alterations to visible elevations, windows and materials are more tightly controlled. Some outlying villages also have their own conservation area designations, which we check before advising on likely planning routes.
How it works
Our roof windows process
- 01
Survey
Confirming the proposed window position, size and whether the rafter spacing needs trimming or reinforcing.
- 02
Structural opening
Cutting and trimming the roof structure to form the opening, with additional support where needed.
- 03
Installation
Fitting the window unit and the manufacturer's flashing kit, matched to the existing roof covering.
- 04
Completion
Checking the installation is weathertight and, internally, plastering back around the reveal.
Also in this area
Other services we provide in Horsham
Nearby coverage
Roof Windows in nearby areas
Need help right now?
Before booking a site visit, get an instant answer for £4.99 — Ask an Expert in Horsham.
FAQs
Roof Windows in Horsham: FAQs
Do you provide roof windows across all of Horsham?
Yes, we cover the RH12 and RH13 postcode areas in full, including Roffey, Holbrook, Littlehaven, Denne, Trafalgar, Broadbridge Heath, Southwater, Warnham, Colgate.
Is "Velux" the only brand of roof window you fit?
Velux is the best-known brand and the term people commonly use for any pitched roof window, but we fit from a range of manufacturers depending on your budget and specification. We advise on the right product at survey.
Do roof windows need planning permission?
Most roof windows fall under permitted development, provided they don't project significantly beyond the roof plane and meet other standard criteria, but conservation areas and listed buildings can have additional restrictions. We confirm the position for your specific property before ordering.
Is Horsham town centre a conservation area?
Yes, the historic core around the Carfax and Causeway is a conservation area with a number of listed buildings, which affects what changes can be made without planning permission or listed building consent.
Get a quote for roof windows in Horsham
Tell us about the property and what you have in mind, and we'll arrange a site visit.
Last reviewed 2026-07-28.