Brandon Roofers carries out commercial roofing in Hockwold and the surrounding area, from targeted repairs on failing flat roofs to full system replacements on warehouses, retail premises, industrial units, and office buildings.
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Each system ages differently, fails differently, and responds to repair differently. Understanding which system your building has, and what stage of its life that system is at, is the foundation of any sensible decision about what to do next.
We work on industrial units, retail premises, warehouses, and office buildings, using the correct access equipment for each job and scheduling work around your trading hours where disruption needs to be kept to a minimum.
The single most important decision in commercial roofing is whether to repair what you have or replace the whole system. It is also the question that generates the most disagreement between building owners and contractors - often because the contractor's answer depends on what they are better at or what makes them more money, rather than what is genuinely in the client's interest.
The honest answer depends on three things: the age and remaining service life of the current system, the extent and nature of the defects, and the cost of repeated repairs versus the cost of replacement. Getting this right requires an accurate survey and a frank conversation. Below is a practical framework for working through the decision.
Repair is usually the right answer when the existing roof system is in generally sound condition but has developed localised failures. The most common repairable defects on commercial flat roofs include split or lifted laps on felt, failed seals around outlets or pipe penetrations, lifted flashings at upstands and parapets, and small blistered or delaminated areas where moisture has entered the system at a joint.
A targeted repair on a roof that still has significant life in it is good value. On a torch-on felt system that is, say, eight to twelve years old and otherwise performing well, a localised repair is almost always preferable to replacement. The same logic applies to a single-ply EPDM membrane where a single seam has lifted - the rest of the system may have 20 years of life remaining.
Repair also makes sense as a short-term measure when a full replacement is planned but cannot happen immediately - for example, because the budget needs to be released, or because the building is occupied and a replacement needs to be scheduled around business operations. A properly executed temporary repair buys time without wasting money.
Typical repair costs on commercial flat roofs range from a few hundred pounds for a small localised patch or a flashing re-seal, up to £1,500 to £3,000 for more extensive work covering several defects across a larger roof area. The key measure of value is the cost of the repair relative to how much additional service life it is likely to deliver.
There are situations where repair becomes the more expensive option over time. If a roof system is regularly developing new defects in different areas, you are not fixing the underlying problem - you are managing a roof that is at the end of its life, one patch at a time. Each repair costs money, but none of them restores the integrity of the system as a whole.
A roof that has been repaired three or four times in the last five years and is still leaking is almost certainly telling you that replacement is overdue. The cumulative repair spend, when compared honestly against the cost of a new system, often makes replacement the more economical decision.
Repair is also unlikely to be sufficient where the deck beneath the roof covering has deteriorated. Water that has tracked through a failed membrane and soaked into a timber or wood wool deck creates a problem that no surface patch can address. A new roof covering laid over a wet or degraded deck will fail prematurely, and the deck repair or replacement has to happen regardless. In those cases, combining the deck work with a full re-cover is almost always more cost-effective than doing them separately.
The starting point is a proper roof survey. A good commercial roof survey should identify the current system and confirm its age where records exist, locate all active and historic leak points, check the deck for softness, delamination, or rot, assess the condition of outlets and drainage, inspect all upstands, flashings, and penetrations, and identify any areas of standing water that indicate inadequate falls.
Infrared or thermal imaging surveys are available for larger commercial roofs and can identify areas of wet insulation that are invisible to a standard visual inspection. These are worth considering on roofs above 500 square metres where the cost of unnecessary replacement is significant.
After a thorough survey, a competent contractor should be able to give you a clear assessment of the roof's remaining service life, the specific defects present, and an honest comparison of the cost and likely outcome of repair versus replacement. If a contractor cannot or will not give you that comparison, ask for it directly.
A useful way to frame the decision is to compare the annualised cost of each option. If a full replacement costs £25,000 and the new system is expected to last 20 years, the annualised cost is £1,250 per year. If repairs are costing £3,000 per year and the roof has three to five years of life remaining at most, the annualised cost of staying with repairs is higher - and that calculation does not include the cost of any water damage to the building's interior during that period.
This is not an argument that replacement is always the right answer. On a roof with ten years of expected life remaining and a single localised defect, a £500 repair at an annualised cost of £50 per year is clearly better value. The point is that the comparison should be made explicitly, with real numbers, rather than defaulting to whichever option feels less painful in the short term.
For commercial flat roof replacement in this part of the country, torch-on felt systems typically cost between £35 and £60 per square metre, depending on the number of layers, the condition of the existing deck, and the insulation specification. EPDM rubber single-ply systems run at a broadly similar rate per square metre, with the advantage of fewer joints and a longer expected service life - often 30 years or more before full replacement is required.
Metal re-roofing on industrial or agricultural buildings varies more widely with sheet profile, thickness, and any structural work required to the supporting frame. Any price you receive for commercial re-roofing should specify all of these elements in writing, including whether deck repair or replacement is included and what happens if additional problems are found once the existing covering is stripped.
On commercial buildings with multiple layers of existing felt, a contractor may propose re-covering - laying a new system directly over the existing one - rather than stripping back to the deck. This can be a legitimate and cost-effective approach where the existing layers are dry and the deck is sound, and it avoids the cost and waste of stripping. However, it adds weight to the roof structure, and if there is any trapped moisture in the existing layers, it will continue to degrade the deck beneath the new covering.
Ask any contractor proposing a re-cover to confirm that the deck has been checked for moisture and structural integrity before the new covering goes on. On buildings where the roof has leaked persistently, a full strip and deck inspection is almost always the safer option, even if it costs more at the outset.
On a commercial roof that is ageing but not yet at the end of its life, a planned maintenance programme can extend the serviceable life of the system and reduce the likelihood of sudden failures. This typically involves an annual inspection, clearing of outlets and gutters, re-sealing of any lifted laps or flashings before they become active leaks, and a written record of the roof's condition over time.
A maintenance programme does not postpone replacement indefinitely, but it can add several years of reliable performance to a roof that would otherwise deteriorate more quickly through neglect. It also means that when replacement does become necessary, you have accurate records to inform the specification.
If you are unsure whether your commercial building in Hockwold needs a repair or a full roof replacement, the most useful thing you can do is get an independent survey before you commit to either. We will inspect the roof, explain what we find, and give you a straightforward assessment of your options - including the cases where repair genuinely is the better choice. Call us to arrange a site visit and survey.
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Call any time. Calls are answered day and night and passed straight to our roofers.
