Dormer flat roof replacement, lead cheek flashings and new dormer construction across Canterbury and East Kent. GRP & lead specialists. Conservation area experience. Free surveys.
GRP flat roof · Lead cheeks · New dormer construction · Canterbury CA experience
Canterbury's Victorian and Edwardian terraces are highly suitable for dormer loft conversions — the steep 40–45 degree roof pitch provides good natural head height, and the rear roof slope is typically away from street view, making permitted development consent straightforward in most cases. Dormers added to Canterbury terraces over the past 30 years are now reaching the age where their original flat roof coverings need replacement, and lead cheek flashings that were installed to minimum specification are failing on properties throughout the city.
We carry out the full range of dormer roofing work: GRP replacement of failed or end-of-life dormer flat roof sections, lead cheek and front flashing replacement on existing dormers, and new dormer construction as part of loft conversion projects. Canterbury's conservation areas require additional care in dormer specification — in particular, rear dormers on properties within the city centre conservation area must comply with Supplementary Planning Guidance on dormer size, materials and design, and we advise on this as part of every Canterbury dormer survey.
Failed felt dormer flat roofs on 1990s–2000s conversions on properties across Wincheap, St Dunstan's and the Old Dover Road corridor — these are now 20–30 years old and felt is not designed for this service life in Canterbury conditions. Lead cheek flashing failure on dormers where Code 3 lead was installed as the original specification. Blocked dormer gutters causing overflow behind the lead front flashing on properties where gutter access has not been maintained.
“Dormer flat roof on our Victorian Wincheap terrace had been leaking for two years. GRP replacement sorted it completely. They also replaced the lead cheeks at the same time. Properly done.”
“New dormer construction on our St Dunstan's terrace. Conservation area check done first, permitted development confirmed, job completed within six weeks of survey. Excellent from start to finish.”
“Lead cheek flashings had failed on our dormer — traced the bedroom leak to them. Canterbury Roofing replaced them in Code 5, problem solved. Good clear diagnosis.”
All prices are guides — we always provide a free, itemised quote before any work begins. No hidden fees.
Minor tile work to full valley repairs
Full re-roof, materials and labour
GRP, EPDM or felt, size dependent
Clean, repair or full replacement
Repointing, flashing, pot replacement
Same-day response, 24/7 availability
Flat-roof dormer re-covering in GRP typically costs £600–£1,400 depending on size. Lead cheek flashing replacement on an existing dormer runs £350–£700. Full dormer construction as part of a loft conversion starts at £4,000–£8,000 for a standard Victorian Canterbury terrace, though this varies significantly with dormer size and structural complexity. Free no-obligation surveys and fixed-price quotations provided.
GRP fibreglass is the recommended covering for dormer flat roof sections in Canterbury. Its seamless installation eliminates the joint failures common in felt, and it handles Canterbury's above-average rainfall without the ponding issues that accelerate felt deterioration. Lead remains the correct specification for dormer cheek flashings — Code 4 minimum, Code 5 on larger or more exposed dormers.
Dormers within the permitted development limits (not exceeding the existing roof plane at the front, not higher than the existing ridge) do not normally require planning permission. However, properties in Canterbury's conservation areas, listed buildings, and Article 4 direction areas may require consent. We always check the planning position as part of the survey for any Canterbury dormer project.
The most common causes on Canterbury period properties are: failed felt that has reached end of life (typical on 1970s–80s dormer additions); lead cheek flashing failure where the lead has cracked or lifted at the junction with the dormer wall; and blocked dormer gutter causing overflow into the dormer structure. We diagnose the cause on the free survey before quoting.
Yes. We carry out full dormer construction including structural work, roofing, lead flashings, window installation and internal finishing. All Canterbury dormer projects begin with a free feasibility survey and planning position check. We obtain permitted development certificates where applicable and advise on the full consent process where required.
No call-out fees. No obligation. An honest quote from a local Canterbury roofer who turns up when they say they will.
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