Single Ply Roofing for West Midlands Commercial Buildings
Single-ply membrane is the commercial flat roof system for large spans, where sheets are mechanically fixed or adhered and joined by hot-air welding into a continuous waterproof surface. Book a survey and every elevation of the single-ply membrane roof is checked, photographed and listed before a figure is put to it. The scope here: Single-ply membrane · Hot-air welding · Mechanical fixing.
- On site in 45 to 90 minutesEvery elevation photographed from ground level and ladder, and the roof void inspected from inside.
- A written report in two daysDefects separated into immediate, this season and monitor, with photographs against each.
- An itemised written scopeAgreed and signed before anyone starts, with no variation without a new figure.
Call the crew07446 375079
Monday to Friday, eight until six, and Saturday mornings. Emergency make-safe runs outside those hours.
Crews work across 8 Birmingham and Solihull districts: Sutton Coldfield, Harborne, Edgbaston, Moseley, Solihull, Erdington, Kings Heath and Selly Oak. Postcodes outside that run are quoted case by case rather than turned away.
- Free survey No charge for the survey, and none if the report says nothing needs doing.
- Own crews The people who survey the roof are the people who lay it. No subcontracting, no lead resale.
- Written scope first Quoted as an itemised scope agreed before work starts.
- Workmanship warranty Issued in writing on completion. Sole trader, no scheme registration.
A factory-made synthetic sheet, laid in wide runs and seamed by hot-air welding, which fuses the laps into one material rather than gluing them.
Welds are probed and, where specified, air-tested before handover.
What we fix
What is a single-ply membrane roof?
Single-ply is a factory-made synthetic sheet, commonly PVC or TPO, laid in wide rolls across large spans and joined by hot-air welding. It covers warehouses, schools, retail units and offices where domestic systems do not scale.
Hot-air welding involves seams fused by heated air and pressure, producing a homogeneous joint. Mechanical fixing is fixed through the membrane into the deck at calculated centres.
How it works
The building keeps trading throughout.
- Hot-air welding fuses adjacent sheets into a homogeneous joint.
- A wind uplift calculation determines fixing centres by a height, exposure and roof zone.
- An overlay avoids strip-off and disposal where the existing covering is sound.
- An installer accreditation conditions the manufacturer warranty.
Straight answers
How are the sheets joined?
Adjacent sheets are joined by hot-air welding, which fuses the two surfaces into a single homogeneous material rather than bonding them with adhesive. Completed welds are probed and, where specified, air-tested before handover.
The adhered system is fully bonded, used where the deck or exposure rules out penetrations; the requirement is fixing centres derived from building height, exposure and roof zone.
Mechanically fixed or fully adhered?
Mechanically fixed systems anchor through the membrane into the deck at calculated centres and suit most warehouse and industrial decks. Adhered systems bond fully and are specified where penetrations are unacceptable or exposure is severe.
The single-ply is long, with the warranty term depending on system, thickness and installer accreditation. The option of the overlay is installation over an existing sound covering, avoiding strip-off and disposal. The integration of the rooflight is upstands and kerbs weathered into the membrane, a common leak location.
Can it be laid over the existing roof?
Yes, where the existing covering is sound and dry. An overlay removes strip-off, disposal cost and the risk of leaving the building open, and it keeps the roof weathertight throughout the programme.
Manufacturer warranties depend on accredited installation and inspection. Work sequenced so the building stays weathertight and trading each day.
What determines the warranty?
Warranty term depends on the membrane system and thickness, on the installer holding manufacturer accreditation, and on the installation being inspected. Specification alone does not secure the guarantee; the installing contractor does.
Sequencing work on an occupied building
Uplift varies by roof zone — corners and perimeters need denser fixing than the field, and a uniform pattern is a specification failure. Seam integrity can be probed and air-tested before handover, so the roof is verified rather than trusted. Laying over a sound existing covering removes strip-off, disposal cost and the risk of leaving a building open.
Arrange a site visit
The manufacturer's guarantee depends on who installed it and whether it was inspected, which is a procurement question, not a technical one.
Single-ply, and 7 more
- single-ply
- TPO
- PVC membrane
- hot-air welding
- wind uplift calculation
- adhered system
- overlay
- kerb
Recent work
Job photographs are added as each contract completes, with the date, the district and the defect named in the caption.
Where we work
8 Birmingham and Solihull districts
- Sutton Coldfield
- Harborne
- Edgbaston
- Moseley
- Solihull
- Erdington
- Kings Heath
- Selly Oak
Postcodes outside that run are quoted case by case rather than turned away.
Related pages
Book a single-ply membrane roof survey
A survey takes forty-five to ninety minutes and the written report follows within two working days. Nothing is charged for the survey, and nothing is charged if the report says nothing needs doing.