Corby at a glance
- Postcode districts
- NN17, NN18
- Population
- about 68,164 (GeoNames)
- Council area
- North Northamptonshire Council
- Building approval
- North Northamptonshire Council building control, or a registered building control approver
- Nearest main town
- Northampton, about 19 miles
- Guide price region
- East Midlands (−2% on West Midlands rates)
What do commercial flat roofs in Corby need?
A commercial re-roof in Corby has to fit around customers, staff and deliveries. We agree working hours, skip positions and access routes before we start, keep fire exits clear throughout, and choose a flame-free system where your site does not allow hot works near stock or occupied rooms.
Corby's flat roofs are mostly on 1930s semis with flat-roofed garages and kitchen extensions, with plenty on low-rise post-war blocks of flats too. 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.
How much does a commercial flat roof cost in Corby?
At East Midlands guide rates, a 100 m² commercial roof in single-ply with insulation comes to £12,950–£21,350 including VAT. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Commercial roof (100 m²), single-ply + insulation | £12,950–£21,350 |
| Condition survey and leak investigation | £150–£290 |
| Block of flats (150 m²), felt + insulation + scaffold | £15,250–£26,650 |
Do you offer condition surveys and phased budgets?
Yes. A condition survey with a written report is a paid service, guide £150–£290 for a typical single roof, with larger or multi-roof sites priced before we attend. A survey and quote for replacement work is free.
The report covers the covering, upstands, outlets, edges and rooflights, signs of ponding or wet insulation, and what needs doing now, soon and later. You can then plan a phased programme: urgent repairs first, then re-roofing in sections over one or more budget years, with each phase priced separately in your written quote.
Re-covering more than half of a roof over heated space usually triggers the thermal element rules, so the insulation is upgraded towards the renovation U-value where feasible; in England the non-domestic target is 0.18 W/m²K. We handle building control where it is needed. See building regulations and flat roof surveys.
What's included?
- CDM planning, edge protection and fragile-surface controls on every job
- Programme planned around trading hours, deliveries and site rules
- Written workmanship guarantee, with manufacturer guarantees registered where the system allows
- Single-ply, built-up felt, liquid-applied and mastic asphalt systems
Building regulations in England
Replacing more than half of a flat roof over a heated room usually counts as renovating a thermal element, so the roof is insulated to around 0.16 W/m²K where that's technically and economically feasible, and the work is notified to building control: the council or a registered building control approver, unless a registered competent person self-certifies it. A roof on a new extension is built to 0.15 W/m²K. Patch repairs, and most unheated detached garages, don't trigger the upgrade. Structural changes, or a new covering that adds 15% or more to the roof's weight, also need approval. More on the rules.
Which nearby areas do we also cover?
- Kettering · 7 mi
- Market Harborough · 10 mi
- Wellingborough · 13 mi
- Stamford · 14 mi
- Rushden · 15 mi
- Wigston · 18 mi
Commercial flat roofing in Corby: questions
Do you cover Corby?
Yes. Corby is part of our Northamptonshire coverage, including postcode districts NN17, NN18. Surveys and roofs are carried out by vetted roofing teams working under S&K Property Investments and Improvement Ltd.
Who checks building regulations for a flat roof in Corby?
Where the work needs approval it goes to North Northamptonshire Council building control, or a registered building control approver. We tell you at the survey whether your job needs it and deal with the paperwork as part of the quote.
How much does a commercial flat roof cost in Corby?
£12,950–£21,350 for a 100 m² commercial roof in single-ply with insulation, at East Midlands guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Can our existing roof be overlaid instead of stripped?
Often, if the survey shows the existing covering is sound, dry and firmly bonded. Wet insulation, a soft deck or several old layers mean a strip-out is the better long-term answer.
What happens to air conditioning units and other roof plant?
Plant can often stay in place, with the new roof detailed around its supports. Where it has to be isolated and lifted, your mechanical contractor does that while we re-roof beneath it, and we agree the timing at survey stage.