Dormers create more flashing junctions per square metre of roof than any other element. Each junction is a potential water entry point. We carry out dormer repairs, leadwork, flat dormer top replacement and full dormer rebuilds across Chichester and the surrounding area.
The cheek flashings, front apron, flat top or pitched dormer covering, and the junction with the main roof all require correctly specified lead work that moves with the building and stays watertight through decades of thermal cycling. When any element fails, water finds its way in at the most complex junction on the roof.
Cheek flashings — the lead strips running down each side of the dormer where it meets the main roof — are the most common dormer failure point. They are subject to both the thermal movement of the dormer structure and differential movement between the dormer and main roof. On properties over 60 years old, original cheek flashings are often at end of life. Full replacement in Code 4 lead with correctly formed and fixed steps gives 50 to 80 years' service.
Flat-topped dormers have two appropriate covering options: lead for conservation area and listed building properties; GRP fibreglass for standard residential outside conservation areas. GRP handles thermal cycling on flat dormers better than felt — its design life of 25 to 40 years compared to felt's 8 to 12 makes GRP the correct specification for any new flat dormer top installation on a standard property. We do not specify felt for flat dormer tops.
Adding or substantially altering a dormer on a property in Chichester's conservation areas typically requires consent. Even replacing like-for-like on a listed building requires Listed Building Consent where the work goes beyond routine maintenance. Repair and replacement in appropriate materials — lead, clay tile, natural slate — is generally permitted. We advise on the consent position before any work starts on designated properties.
Free survey — no call-out fee — Lavant & surrounding area
📞 01243 278085South downs valley position, frost pockets, colder than coastal plain. For dormer roofing in Lavant, this means frost-accelerated mortar failure, ridge clips mandatory on elevated positions. We factor this into our survey, specification and material choice on every Lavant job — not as an afterthought but as the starting point for getting the work right.
"Excellent dormer cheek flashing replacement in code 4 lead. Free survey, clear quote, arrived on time and cleaned up completely. Exactly what you want."
"Used them for flat dormer top replacement with grp. Honest assessment, matched materials perfectly, no pressure on scope. Very happy with the result."
"Called for full dormer leadwork on victorian semi after another contractor let me down. Professional from first call to completion. Recommend unreservedly."
Lavant sits in the valley at the foot of the south downs, where cold air drainage overnight creates frost pockets more severe than chichester city. For roofing work in Lavant, this means Ridge mortar failure on elevated positions above the valley floor is accelerated by frost cycling — mechanical clips are standard on exposed Lavant ridges. Period flint and brick cottages in the village core require lime mortar throughout. We factor all of this into our survey, specification and material choice on every Lavant job.
Mechanical ridge clips on exposed Lavant properties are included in our standard re-bedding specification without needing to be requested — the frost-accelerated mortar deterioration on ridge positions above the valley floor makes supplementary fixings essential rather than optional. We advise on this at the survey.
Free survey across all Chichester postcodes and the surrounding area. Written quote with full itemised breakdown. No call-out fee, no obligation, and no pressure to commit before you are ready. We have been carrying out this work in Chichester and the surrounding area for over 20 years. Our reputation here is built on honest assessment and correct specification — not on selling work that is not needed. Call 01243 278085 to arrange a free survey.
Costs vary by scope and access. Cheek Flashing Replacement: £400–£900. Flat Dormer Top (GRP): £500–£1,200. We provide a free survey and written itemised quote for all work in Lavant — no obligation to proceed.
Yes. Lavant is part of our regular working territory. We carry out dormer roofing across all Lavant postcodes and the surrounding area. Our own team on every job — no subcontractors.
No. The survey visit and quote are free with no obligation. For emergency work, we charge only for the make-safe and repair — no separate call-out fee on top.
Minor repair or maintenance visits typically take 2 to 4 hours. Larger jobs — re-roofing, full flat roof replacement — take 3 to 7 days depending on size and complexity. We confirm the programme in the written quote.
Scaffold requirements depend on the job and property height. We confirm access requirements in the written quote. Scaffold cost is always included as a line item so there are no surprises.
Yes. South downs valley position, frost pockets, colder than coastal plain. For dormer roofing this means frost-accelerated mortar failure, ridge clips mandatory on elevated positions. We specify materials and methods appropriate to Lavant's specific conditions at the survey.
Yes. Our NFRC membership is current and verifiable at nfrc.co.uk. We hold £5m public liability insurance and provide a written 10-year workmanship guarantee on all dormer roofing in Lavant. All credentials available on request.
Dormer leaks are among the most complex to diagnose accurately because water can enter at one junction and appear internally at a completely different location after tracking along timbers or running behind linings. We inspect from close range — scaffold or cherry picker — covering every element: cheek flashings on both sides, front apron, back gutter, any flat dormer top covering, and the junction between the dormer and the main roof covering. In Lavant, where frost pocket valley positions with accelerated mortar deterioration, the typical failure modes depend on the property age — original Victorian leadwork reaching end of service life on period properties; inadequate original flashing specification on post-war additions.
For standard residential properties in Lavant outside conservation areas, GRP fibreglass is our flat dormer top recommendation. The seamless GRP surface eliminates the joint-and-seam failure mode that makes felt flat dormer tops short-lived, and its 25 to 40 year design life means one installation rather than a repeated 8 to 12 year replacement cycle. For listed buildings and conservation area properties in Lavant, lead is the correct specification — it is appropriate to the building character, long-lasting when correctly installed, and the only material that conservation officers will accept on heritage properties. We do not offer felt for any new flat dormer top installation.
Cheek flashing replacement on a standard dormer in Lavant costs £400 to £900 per side. A full leadwork package covering both cheeks, front apron and back gutter runs £1,200 to £2,000. GRP flat dormer top replacement is £500 to £1,200 depending on dormer size. All costs include scaffold where required. Written quotes after a free survey with no obligation.
Honest pricing from a local Chichester roofer. Free survey, written quote, no obligation in Lavant.
01243 278085 ✉ Email Us