West Sussex · RH12, RH13
Flat Roofing in Horsham
Flat roof replacement covers stripping an existing flat roof back to the deck and re-covering it with a modern waterproof system — EPDM rubber membrane, GRP fibreglass or traditional felt — chosen according to the roof's size, detailing and expected lifespan.
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 flat roofing
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 flat roofing process
- 01
Survey
Assessing the existing deck, insulation, falls and the cause of any leaks or ponding.
- 02
Specification
Agreeing the system — EPDM, GRP or felt — based on roof size, detailing and budget.
- 03
Strip and prepare
Removing the existing covering and any damaged decking or insulation, and correcting falls where water is pooling.
- 04
Installation
Fitting new insulation, decking where needed, and the chosen waterproof system with correctly detailed upstands and edges.
Also in this area
Other services we provide in Horsham
Nearby coverage
Flat Roofing in nearby areas
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FAQs
Flat Roofing in Horsham: FAQs
Do you provide flat roofing 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.
Which flat roof system should I choose — EPDM, GRP or felt?
EPDM offers a long lifespan with a single membrane and few joints, suiting most domestic flat roofs; GRP suits roofs with complex upstands and detailing since it's laid and cured seamlessly in situ; felt is the lowest-cost option but has the shortest expected lifespan. We advise on the right system for your roof and budget at survey.
Why does my flat roof have ponding water?
Ponding usually means the roof's falls — the slight slope that directs water to an outlet — are insufficient or have settled over time. We assess and correct falls as part of re-covering rather than simply laying a new membrane over the same problem.
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 flat roofing 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.