Single ply roofing uses a single layer of flexible membrane, usually PVC or TPO, to waterproof large flat and low-pitch roofs. Seams are welded with hot air to form a continuous watertight layer, and the membrane can be mechanically fixed or fully adhered depending on the building.
We install and repair single ply roofing in Bristol and Bath on offices, schools, warehouses, retail units and blocks of flats. It is light, quick to install over large areas and can often be laid over an insulated deck to meet current energy efficiency standards.
Single Ply Roofing is a good choice for:
Single ply is a commercial roofing system first and foremost. For smaller domestic roofs, EPDM or GRP are usually more practical. Where a roof has lots of awkward details, liquid roofing can work alongside single ply. See all our commercial roofing services.
Commercial projects are planned in line with the CDM Regulations 2015 and the Work at Height Regulations 2005, with edge protection and controls around fragile roof lights.
PVC membranes are flexible, easy to weld and have a long track record on commercial roofs. TPO membranes offer similar performance with a different chemical make-up. Both are welded at the seams with hot air to form a continuous waterproof layer. The right choice depends on the building, any existing materials and the manufacturer system specified.
Single ply can be mechanically fixed through the insulation into the deck, fully adhered with adhesive, or ballasted. Mechanical fixing suits many metal and timber decks, while adhered systems give a smooth finish and suit roofs where fixings are not practical. Wind uplift calculations determine the fixing pattern for each roof.
Single ply roofs benefit from regular inspections, especially around outlets, plant and roof lights, and from keeping the surface clear of debris.
A typical single ply refurbishment:
We install and repair single ply roofing on homes and commercial buildings across Bristol, Bath and the towns in between, including Bristol city centre, Clifton, Kingswood, Filton, Bath and Keynsham.
See our residential roofing and commercial roofing services, compare every option on our roofing systems page. For a leak right now, call about an emergency roof repair.
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A good quality single ply membrane, properly installed and maintained, typically lasts for decades.
It can be, but EPDM or GRP are usually more practical for domestic flat roofs.
Sometimes. If the existing roof and deck are sound, an overlay with new insulation can be cost-effective. A survey will confirm.
It depends on the area, insulation and access. We provide a written proposal after a survey.
Large roofs need careful planning. We programme the work around your building so you can keep operating while the roof is replaced.