- Guide price
- £1,350–£2,600
- Survey
- Free for new and replacement roofs
- Quote
- Fixed, in writing
- Coverage
- England, Wales, Scotland, NI
Lincolnshire at a glance
- Largest towns
- Lincoln, Grimsby, Scunthorpe, Boston
- Postcode areas
- DN, LN, NG, PE
- Building control
- City of Lincoln Council, North East Lincolnshire Council, North Lincolnshire Council and 6 other councils
- Neighbouring areas
- Nottinghamshire · East Riding of Yorkshire · South Yorkshire · Derbyshire
- Guide price region
- East Midlands (−2% on West Midlands rates)
How much does a new dormer roof cost in Lincolnshire?
Guide prices including VAT at East Midlands rates. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Dormer (8 m²), GRP, scaffold | £1,350–£2,600 |
| Single garage (18 m²), EPDM rubber | £1,550–£2,750 |
| Extension (20 m²), GRP, new deck + insulation | £2,950–£5,300 |
Which flat roofs are common in Lincolnshire?
Flat roofs in Lincolnshire sit on low-rise post-war blocks of flats, 1930s semis with flat-roofed garages and kitchen extensions and lock-up garage blocks on estates. The East Midlands is drier than the west of Britain, so most flat roofs here fail through age, UV and poor detailing at upstands rather than sheer rainfall. Approximate 1991–2020 regional averages based on Met Office data.
Building regulations in England
Replacing more than half of a roof over a heated room usually counts as renovating a thermal element, so it is insulated to current standards and notified to building control. Renovated roofs over heated rooms are insulated to around 0.16 W/m²K where that's feasible, and new extension roofs are built to 0.15 W/m²K. In Lincolnshire the application goes to City of Lincoln Council, North East Lincolnshire Council, North Lincolnshire Council and 6 other councils. More on the rules.
Is GRP or EPDM better on a dormer roof?
GRP fibreglass is often the first choice on a dormer, because it is laid as a liquid resin over a mat and forms neat, rigid edges, corners and drip details on a small roof. It cures to a hard surface that copes with occasional foot traffic during window cleaning or maintenance.
EPDM rubber works well on a plain rectangular dormer and can usually be laid as one sheet, with no field joins. Unlike GRP, it does not depend on resin curing conditions on the day. Torch-on felt can be used, but working a torch close to timber cladding, fascias and tiles needs extra care, so a cold-applied system is often chosen instead.
We recommend the system after surveying the dormer, its edges and how it meets the main roof.
How long does a dormer roof replacement take?
The roofing itself typically takes one to three days, with scaffold going up before and coming down after. Allow a few extra days overall for the scaffold.
The room under the dormer stays usable, though it will be noisy during the strip-out, and dust can fall through gaps around the ceiling. Moving furniture away from the window helps. Scaffold usually needs space on the drive or garden, and sometimes a pavement licence. GRP has a strong smell while it cures, so keep the dormer windows shut on the day it is laid.
Which towns in Lincolnshire do we cover?
Dormer roofs in Lincolnshire: questions
Which towns in Lincolnshire do you cover?
All of Lincolnshire. The main towns have their own pages below, and if yours isn't listed we still cover it: send your postcode and we'll confirm.
How much does a new dormer roof cost in Lincolnshire?
£1,350–£2,600 for an 8 m² GRP dormer roof including scaffold, at East Midlands guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Which postcode areas do you cover in Lincolnshire?
All of Lincolnshire, including the DN, LN, NG, PE postcode areas. Send your full postcode and we'll confirm.
Can you replace the lead on my dormer at the same time?
Yes, where lead forms part of the dormer abutment or cheek flashings, we include renewing it in the roof job.
Can a dormer roof be replaced without scaffold?
Rarely. A tower or full scaffold is usually needed to give a safe working platform and edge protection at that height.
Is a dormer roof cheaper than a garage roof?
Not by as much as the size suggests. Scaffold and the extra detailing at height mean a small dormer roof often costs about the same as a single garage roof.
Everything about dormer roofs → · All flat roofing in Lincolnshire →