Brandon Roofers carries out commercial roofing in Mildenhall and the surrounding area, working on industrial units, warehouses, retail premises, and office buildings with flat roof replacement, felt systems, single-ply membranes, and profiled metal sheeting.
Cost is usually the first question any business owner or property manager asks about a commercial roofing project, and understandably so. A flat roof replacement on a commercial building is a significant capital spend, and the range of prices quoted by different contractors for apparently similar jobs can be confusing. This page sets out honestly what drives commercial roofing costs, what typical UK price ranges look like, and what questions to ask before you commit to anything.
Brandon Roofers carries out commercial roofing across Mildenhall and nearby areas, covering industrial units, retail and office buildings, warehouses, and commercial outbuildings. Our work includes full flat roof replacements, repairs and patch work on existing systems, new installations on extensions and new-build commercial structures, and the refurbishment of pitched metal sheet roofs. We can schedule work outside normal trading hours to keep disruption to businesses in the building to a minimum.
Systems we work with include torch-on polymer-modified bitumen felt, EPDM rubber membranes, single-ply systems such as TPO, and profiled metal sheet roofing. The right system for any given building depends on roof size, fall, deck condition, and budget, which is why a proper survey always comes first.
Commercial flat roof replacement in the UK typically costs between £50 and £120 per square metre, depending on the system chosen, the condition of the existing deck, and the complexity of the job. That range is wide because the variables are significant, but it gives a useful starting point.
A straightforward torch-on felt replacement on a sound deck, with competent access and no unusual details, tends to sit in the £50-£75 per square metre range. EPDM and single-ply systems are generally in the £70-£100 range, reflecting higher material costs and the skills required for seaming and bonding. Standing seam or insulated metal panel systems on pitched commercial roofs can run to £100 per square metre or more, though they are very long-lived and low-maintenance once installed.
These figures cover the roofing work itself. They do not always include scaffolding, which is priced separately, or the disposal of large quantities of old felt and insulation, which is charged by the skip load. A realistic total project cost for a medium-sized commercial roof replacement might be 20-35% higher than the roofing labour and materials alone, once access and waste disposal are factored in.
Several factors reliably push a commercial roofing quote higher. Understanding them means you can have a more informed conversation with any contractor and avoid being caught out by unexpected extras.
Many commercial flat roofs have been overlaid more than once over the years. Each additional layer of felt or membrane adds labour and disposal cost when the roof finally needs a full replacement. A roof with three layers of old felt takes significantly more time to strip than one with a single layer, and the skip costs reflect that. A survey will tell you what is there before the price is fixed.
If the roof deck, whether timber, concrete, or steel, has been damaged by moisture ingress over time, repair or replacement of deck sections adds cost to the job. Timber decks in particular can suffer from rot around outlets and upstands where water has been pooling. A good survey identifies deck problems before work starts. A contractor who has not properly inspected the deck before quoting may come back with additional charges once stripping reveals the true condition.
A flat roof that has inadequate fall, meaning water sits on the surface rather than draining to outlets, will fail faster regardless of the quality of the covering. Correcting this during a replacement, either by repositioning outlets, adding tapered insulation, or forming new drainage channels, adds cost but adds considerably to the life of the new roof. Skipping this step to keep the price down is a false economy.
A single-storey unit with a clear perimeter is straightforward to scaffold. A multi-storey building, a property with awkward access, or one where scaffolding must be erected over a live car park, a public footpath, or a shared access road will cost more to access. In some cases, a MEWP or a combination of scaffold and MEWP is the most practical solution, and the access method affects the overall programme and cost.
Rooflights, extract fans, soil vent pipes, and parapet walls all need to be carefully detailed as part of a replacement. Each penetration or abutment takes time, and a roof with many of these features costs more per square metre than a clean uninterrupted roof plane. Lead or purpose-made metal flashings at parapets and abutments also add to material costs.
If a business needs work carried out at night, over weekends, or on public holidays to avoid disrupting trading, that will typically carry a premium on labour rates. The premium varies, but it is a real cost and should be included in any honest quote from the outset.
There are also factors that keep a project more affordable, and it is worth knowing them when planning a job.
Initial installation cost is only part of the picture. The ongoing maintenance cost of a system matters too, particularly for a commercial property owner planning to hold the asset for many years.
Torch-on felt is the most widely used system on existing commercial buildings and is relatively inexpensive to repair when damage occurs. A skilled roofer can patch a failed area, re-dress an upstand, or replace a section of felt without disturbing the rest of the roof. Maintenance costs are therefore manageable, provided repairs are done promptly.
EPDM rubber membranes are highly durable and largely maintenance-free on an annual basis. When damage does occur, repairs use liquid adhesive and patch material and are straightforward. The main maintenance task is keeping outlets clear and checking that the membrane has not been disturbed by any rooftop activity such as maintenance visits to plant or ventilation equipment.
Single-ply TPO or PVC systems are similarly low-maintenance in normal use, but repairs require heat-welding equipment and a trained operative. This means repair costs per incident are generally higher than for felt, but the frequency of repairs on a properly installed system should be very low.
Profiled metal sheet roofing on a pitched commercial building is the lowest-maintenance option of all. The main ongoing tasks are inspecting fixings and sealant at overlaps and ridge details, and keeping gutters and downpipes clear. Correctly installed metal roofing can last several decades with minimal intervention.
Getting more than one quote for a commercial roofing job is sensible. When comparing quotes, a few things are worth checking.
A detailed written quote that sets out exactly what is included is the minimum you should expect before agreeing to any significant commercial roofing work. If a quote is unusually brief or vague, ask for clarification before signing anything.
Not every commercial roofing problem requires a full replacement. A repair is the right answer when the existing system is broadly sound and the problem is localised, such as a failed flashing, a cracked outlet collar, or a split in one section of felt. Repairs on a flat roof in the UK typically cost £200-£800 for a localised patch or flashing replacement, rising to £2,000 or more for a larger area.
Full replacement becomes the better value option when the existing roof is more than 20 years old, when there are multiple areas of failure, when the deck condition is uncertain, or when the existing system has been overlaid so many times that there is simply nowhere left to go. In these cases, continuing to repair costs more in the medium term than a clean replacement and often leaves the building no better protected.
A straightforward question to ask any contractor: if this roof were yours, would you repair it or replace it? A contractor who is being straight with you will give you an honest answer, even if it is not the answer that makes them the most money in the short term.
The single biggest factor in whether a commercial roof lasts is the quality of the original installation. Materials matter, but the details, the upstands, the flashings, the outlet connections, the seam bonding, are where most roofs fail. A price that looks attractive because these details are being cut corners on is not a good deal.
For commercial properties in Mildenhall and nearby, Brandon Roofers offers honest surveys and straightforward advice on what a building actually needs. Call us to arrange a survey and get a clear picture of the work involved and what it will cost.
No obligation · We usually respond within 2 hours
Storm damage, active leak, damaged ridge - we aim to be on-site within 24 hours.
