- Guide price
- £12,550–£20,700
- Survey
- Free for new and replacement roofs
- Quote
- Fixed, in writing
- Coverage
- England, Wales, Scotland, NI
South Yorkshire at a glance
- Largest towns
- Sheffield, Rotherham, Doncaster, Barnsley
- Postcode areas
- DN, S
- Building control
- Sheffield City Council, Rotherham Council, City of Doncaster Council and 1 other council
- Neighbouring areas
- West Yorkshire · Derbyshire · Nottinghamshire · Greater Manchester
- Guide price region
- Yorkshire and the Humber (−5% on West Midlands rates)
How much does a commercial flat roof cost in South Yorkshire?
Guide prices including VAT at Yorkshire and the Humber rates. 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 | £12,550–£20,700 |
| Condition survey and leak investigation | £140–£290 |
| Block of flats (150 m²), felt + insulation + scaffold | £14,750–£25,850 |
Which flat roofs are common in South Yorkshire?
Flat roofs in South Yorkshire sit on 1930s semis with flat-roofed garages and kitchen extensions, bungalows with flat-roofed side extensions and dormers and lock-up garage blocks on estates. England averages roughly 870 mm of rain a year; the Pennine side of Yorkshire is wetter and windier than the east, so we specify for the site rather than the county. 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 South Yorkshire the application goes to Sheffield City Council, Rotherham Council, City of Doncaster Council and 1 other council. More on the rules.
Do you offer condition surveys and phased budgets?
Yes. A condition survey with a written report is a paid service, guide £140–£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.
Can you work around our trading hours and site rules?
Yes. Most commercial roofs can be replaced while the building stays open, and we agree the programme with you before any work starts.
That normally means set working hours, delivery and skip positions that keep entrances and fire exits clear, and phasing the roof so each section is watertight before the team leaves site. Noisy tasks such as strip-out can be timed for quieter periods, and early starts or weekend working can be arranged where your site allows. We tell you in advance which areas below the roof may be affected, so stock and equipment can be protected or moved.
Where torch-on felt is specified, the team works under your hot works permit system, with a fire watch after the torch is put away. If your site does not allow naked flames, we specify a cold-applied, self-adhesive or other flame-free system instead. Tenants, alarm companies and mechanical contractors are coordinated through one named contact.
Which towns in South Yorkshire do we cover?
- Sheffield
- Rotherham
- Doncaster
- Barnsley
- Chapeltown
- Darton
- Dinnington
- Adwick le Street
- Nether Edge
- Rawmarsh
- Fulwood
- Maltby
- Thorne
- Wath upon Dearne
- Conisbrough
- Hoyland
- Wombwell
- Mexborough
Commercial flat roofing in South Yorkshire: questions
Which towns in South Yorkshire do you cover?
All of South Yorkshire. 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 commercial flat roof cost in South Yorkshire?
£12,550–£20,700 for a 100 m² commercial roof in single-ply with insulation, at Yorkshire and the Humber guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Which council handles building control for a flat roof in South Yorkshire?
It depends on where the roof is: in South Yorkshire that's Sheffield City Council, Rotherham Council, City of Doncaster Council and 1 other council. 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. We confirm which applies at the survey.
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.
Can you re-roof while our premises stay open?
Usually, yes. We phase the work so each section is watertight before the team leaves site, keep entrances and fire exits clear, and agree working hours and deliveries with you first.
Who deals with building control on a commercial re-roof?
We do, where the work needs approval. Replacing more than half of a roof over heated space usually means upgrading the insulation towards the renovation U-value where feasible, which is 0.18 W/m²K for non-domestic buildings in England.
Everything about commercial flat roofing → · All flat roofing in South Yorkshire →