North Walsham Roofers carries out commercial roofing repairs, replacements and new installations for businesses in Holt and the surrounding North Norfolk area.
A commercial roof is not the same job as a domestic one. The scale is larger, the consequences of a leak or failure are greater, and the pressure to keep your business running throughout any work is real. Whether you operate a retail unit, a warehouse, a workshop, an agricultural building or an office, the roof above it deserves the same attention as any other part of the structure.
North Walsham Roofers works on commercial and industrial buildings across Holt and North Norfolk. We handle repairs, full replacements and new-build installations, covering both flat and pitched roof systems.
Commercial roofing spans a wide range of work. At one end there are small repairs: replacing a failed flashing, resealing a roof light, or patching a section of felt that has split. At the other end there are full stripping and re-covering projects on large industrial or agricultural buildings.
Common systems on commercial buildings include:
We assess the existing structure before recommending a replacement system. The choice of material depends on the roof pitch, the load-bearing capacity of the structure, the drainage arrangement and your budget. We will explain the options plainly so you can make an informed decision.
Commercial roofing costs vary considerably depending on the size of the roof, the system used and the condition of the existing structure. As a working guide:
These are honest working ranges, not guarantees of what your specific job will cost. The only way to get an accurate figure is a proper survey of the roof. Call us to arrange one.
Lost trading days cost money. On most commercial roofing projects it is possible to plan the work in sections so that part of the building remains operational. On flat roof replacements, we strip and re-cover in manageable areas rather than exposing the whole deck at once. On agricultural and industrial roofs, sheet-by-sheet replacement means the building is never fully open to the weather.
If your building is tenanted or used by the public, we can work around opening hours where that is practical. The specifics depend on the job, so we talk through the programme before starting rather than making promises we cannot keep.
The most common causes of commercial roof failure are not dramatic. They are usually the result of small maintenance tasks that were put off for too long.
Blocked gutters and downpipes cause water to pond against upstands and parapets. Over time, standing water softens the edge details, works under flashings and finds its way into the building. On flat roofs, poor drainage is the root of most problems. The roof covering itself may be perfectly sound, but if water cannot get away, it will eventually find a way in.
UV exposure degrades bitumen-based coverings over years, causing the top surface to crack and eventually allowing moisture into the layers beneath. This process is slow, which is why early signs are easy to ignore - and why the damage is often significant by the time a leak appears inside.
Flashings at abutments - where the roof meets a wall or parapet - are a persistent weak point. The mortar that holds lead or fibre-based flashings in place erodes with frost and rain. Once the flashing lifts, even slightly, water tracks behind it and into the structure. This can go on for a long time before the damage becomes visible inside.
On profiled metal roofs, the foam closure strips at the eaves and ridge break down over the years and allow wind-driven rain and birds in under the sheets. Fixing this is straightforward when caught early; it is a much larger job if the purlins below have been wet for years and have begun to corrode or rot.
This is the section most building owners skip, and it is the one that costs them the most in the long run. A commercial roof that is checked and maintained regularly will last significantly longer than an identical roof that is left alone until something goes wrong. The difference in lifetime cost is substantial.
The logic is straightforward. Roofing materials degrade gradually. The signs of that degradation - a small crack in the felt, a flashing that has lifted a few millimetres, a downpipe joint that has loosened - are easy to find and inexpensive to fix when they are new. Left alone, each of those small defects allows water in. Water causes damage to the deck, the insulation, the ceiling, the contents of the building and, in some cases, the structure itself. By the time the problem is visible inside, the repair bill is many times what it would have been at the first sign.
For most commercial buildings, a visual inspection twice a year - once in autumn before the worst of the winter weather and once in spring after it - is the minimum worth doing. The inspection should cover:
None of this requires specialist equipment on most single-storey commercial buildings. What it does require is actually getting up there and looking, rather than assuming everything is fine because nothing has dripped yet.
Blocked gutters are behind a significant proportion of the water damage we see on commercial buildings. A 20-metre run of gutter can hold a surprising volume of water when it is blocked, and that water sits against the fascia, the wall and - on flat roofs - against the upstand edge. In winter, that standing water freezes, expands and forces apart joints and seals that would otherwise have lasted many more years.
On a large industrial or agricultural building with box gutters running inside the roof structure, blocked outlets are a serious problem. Box gutters have no overflow. When they fill up, the water goes into the building. Having the outlets rodded and the gutter checked annually is not expensive. Replacing a soaked and rotted timber roof structure is.
After any significant wind or storm, it is worth checking your roof rather than waiting to see if a leak appears. Loose or lifted sheet fixings on metal roofs, displaced ridge tiles, or debris that has collected against upstands are all things that can be spotted and dealt with quickly. If you wait until the next heavy rain, you may be dealing with a much larger problem inside.
If you can see obvious storm damage from ground level, call us to arrange a survey before attempting any temporary fix yourself. Temporary coverings applied incorrectly can cause additional damage and make the eventual repair more complex.
If you manage a commercial property, keeping a simple log of roof inspections and any repairs carried out is useful. It gives you a clear picture of where problems have previously occurred, makes it easier to spot a pattern, and provides documentation if you ever need to make an insurance claim or demonstrate the maintenance history to a buyer or tenant.
Ask any contractor who carries out work on your roof to provide a brief written note of what was done and what they observed. A good roofer will not object to this.
There is a point at which patching and maintenance stops being cost-effective. A flat roof covering that is heavily degraded across most of its area, or a profiled metal roof where the majority of the sheets have corroded, is not worth repairing piece by piece indefinitely. A proper assessment will tell you where that line is. We will tell you honestly when a full replacement is the better option, and when a repair will genuinely buy you more useful years.
Choosing a roofer for a commercial building involves a different level of scrutiny than a domestic job. The work is larger, the risk is greater and the cost of getting it wrong is higher. Before appointing anyone, it is reasonable to ask:
A contractor who cannot give clear answers to these questions is one to be cautious about.
If your commercial building is due a roof inspection, or you have noticed signs of a problem, call North Walsham Roofers to arrange a survey. We cover Holt and the wider North Norfolk area and can assess flat roofs, pitched roofs and metal sheet systems on commercial and agricultural buildings. Ring us to book a survey and we will give you a straight assessment of what the roof needs 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.
