Bury St Edmunds Roofers carries out commercial roofing in Elmswell and the surrounding Suffolk area, taking projects from the first inspection through to a clean, documented finish.
A commercial roof replacement or major repair is a significant investment. Understanding exactly what happens at each stage - from the initial look at the roof to the final tidy-up - helps you plan around the work, ask the right questions, and know whether the job has been done properly. This page walks through the process as it actually happens on a commercial roofing project.
We carry out commercial roofing in Elmswell and across the wider Suffolk area, working from our base in Bury St Edmunds. The work covers flat roof systems including built-up felt and EPDM rubber membranes, single-ply installations, profiled metal roofing for industrial and warehouse buildings, and repairs across all of those systems.
A proper commercial roof survey means getting up on the roof, not just looking at it from ground level or from a photograph. The surveyor should check the membrane or felt surface across the whole area, probe any suspicious sections, inspect every upstand, flashing, outlet, penetration and edge detail, and look at the roof deck condition wherever access allows.
On flat roofs, the most important things to assess are: whether water is draining correctly or ponding in low spots; the condition of all seams, laps and joints; and the state of the flashings where the roof meets walls, rooflights and any plant or pipework coming through the surface. These details cause the majority of commercial roof leaks - not the main field of the membrane.
On a pitched commercial roof, the survey covers the condition of tiles or slates, the state of the ridge, hips and valleys, the mortar bedding, and the guttering and fascias. Visible sagging or movement in the roof structure needs further investigation before pricing the work.
The survey should give you a clear answer: is this roof repairable, or does it need replacing? If replacement is the recommendation, you should be told why, with specific observations to support it - not just a general statement that the roof is old.
Once the survey is complete, the contractor should be able to set out clearly what system they are recommending and why it suits your building. For most commercial flat roofs, the main choices are built-up felt, EPDM rubber membrane, or a single-ply TPO or PVC system. For industrial buildings, profiled metal sheeting or insulated composite panels are the usual options.
The specification should cover:
Typical installed costs for commercial flat roofing in Suffolk currently range from around £40 to £65 per square metre for built-up felt systems, and £60 to £100 per square metre for single-ply membranes. These figures are for the main roof area; edge and detailing work is usually priced separately or included as a lump sum within the overall quote.
Before any materials arrive on site, the programme needs to be agreed. This means knowing how many operatives will be on the roof each day, what the expected duration is, when deliveries will arrive and where materials will be stored, and how the site will be secured at the end of each working day.
If the building is occupied during the works - offices, retail units, warehouses in operation - the contractor needs to plan the sequence so that open sections of roof are weathered in before the end of each day. Stripping a large section of felt or membrane and leaving it exposed overnight is not acceptable on a commercial project. Any contractor who cannot give you a clear daily weathering plan is worth questioning before you appoint them.
For some buildings, overlaying the existing roof with a new membrane avoids the need to strip the building while it is occupied. This is only appropriate where the existing deck is sound and the load capacity allows it, but it is worth raising as an option if disruption is a concern.
Where a full strip-out is required, the existing felt, membrane or sheeting is removed and the roof deck is inspected carefully. On older commercial buildings, it is common to find sections of damaged or rotten decking - particularly around outlets where water has tracked down over years. This is a normal finding and should be priced as a contingency in the original quote, or agreed as a day-rate item so there are no surprises.
Once the deck is clear, any damaged boards or sections are replaced, the surface is prepared for bonding or mechanical fixing, and falls are checked. If the roof has inadequate falls (less than 1:80 for a flat roof), tapered insulation can be introduced at this stage to improve drainage without raising the roof height significantly.
The main membrane or system is installed according to the specification. For built-up felt, layers are torched down in sequence, with each lap properly bonded before the next layer goes on. For EPDM, the membrane is laid loose or adhered, with seam tape applied carefully to all joints - this is the stage where most EPDM failures originate if the work is rushed. Single-ply TPO and PVC systems use heat-welded seams, which require proper equipment and trained operatives to achieve a reliable bond.
Flashings, upstands and edge trims are fitted as the membrane installation progresses - not left to the end as an afterthought. Lead flashings to parapet walls and abutments need to be properly dressed and pinned. Outlets and drains are connected and checked for flow. Rooflights and any penetrations through the roof surface get individual attention, as these are the details most likely to fail on a poorly managed job.
When the installation is complete, the roof should be walked and inspected before the crew leaves site. Outlets should be tested by running water from a hose across the roof surface. Any standing water after a test indicates a fall problem that needs attention before the job is signed off.
A completed commercial roofing installation should come with documentation: a record of what was installed, the materials used and the configuration of the system. This matters for building records, for any future sale of the property, and for any maintenance schedule going forward. Ask for this in writing - it is a reasonable expectation on any commercial project.
Strip-out waste - old felt, membrane, fixings and packaging - should be removed from site as part of the job. Commercial roofing projects generate a significant amount of waste material, and leaving it in a skip on your car park for days after the work is finished reflects poorly on how the job was managed. Agree at the outset when waste will be removed and who is responsible for skip hire.
The roof edge, guttering, and any surfaces below the working area should be checked for debris. Lead offcuts, felt offcuts and fixings left on flat roofs or in gutters cause blockages and corrosion problems if they are not cleared. A good clean-up is part of the job, not an optional extra.
Not every job is a full replacement. Localised repairs - to a flashing, a failed seam, a blocked outlet or a section of damaged felt - are a normal part of commercial roof maintenance. The same process applies in miniature: survey the problem properly, fix the root cause rather than just the symptom, and document what was done.
A common problem on older commercial roofs is a repair that has been carried out on top of a previous repair, masking the real extent of the deterioration underneath. If a roof has had multiple patch repairs over the years, it is worth getting a full condition survey before committing to another repair - sometimes replacement is more cost-effective than repeated patching.
If you have a commercial property in Elmswell or the surrounding area and you want an honest assessment of what your roof needs - repair, maintenance or full replacement - call us to arrange a survey. We are based in Bury St Edmunds and work across Suffolk. Call us to book a roof survey at a time that suits your business.
No obligation · We usually respond within 2 hours
Storm damage, active leak, damaged ridge - we aim to be on-site within 24 hours.
