Single ply systems

Our single ply roofing systems are ideal for lightweight, fast track and cost effective construction projects. The systems provide solutions that are durable, resistant to the natural elements and are able to support extensive green roofs and BauderSOLAR photovoltaic arrays.  All our single ply systems hold fire classification BROOF(t4) for compliance with building regulations under TS 1187 test method 4 for external fire exposure to roofs.

Single ply roofing systems are one of the most popular of flat roofing materials, particularly advantageous if the project has weight and load bearing considerations. The membrane is durable and resistant to European climate conditions, tears and punctures, yet incredibly lightweight, typically 2-3kg per square metre. The speed of installation makes it a cost-effective method.

We have two systems within our single ply portfolio – Thermofol PVC and Thermoplan T FPO. Both are suitable for roofs of all shapes and sizes, come in a range of colours and are appropriate for extensive green roof landscaping. Within these two categories sit numerous options for a project. Your area technical manager will be able to tell you which is advisable for the needs of your project.

  • Thermofol PVC

    Project: New build or refurbishment
    Construction: Warm, cold, inverted
    Upgrades: Green roofs and PV

  • Thermoplan FPO

    Project: New build or refurbishment
    Construction: Warm, cold, inverted
    Upgrades: Green roofs and PV

Features and benefits

Below is a table of all the features and benefits of our single ply waterproofing membranes.



Suitable for refurbishment

  • Overlaying existing roof barely increases weight
  • The profiled EPS overlay system is the ideal solution for overlaying an existing profiled or standing seam metal roof
  • Fleece-Backed Membrane fully bonds to wide variety of substrates: Existing Bituminous, Existing Asphalt, Concrete, Plywood/Timber & OSB, PIR, EPS, VIP, Glas and Mineral wool insulation    

Suitable for new build

  • Light weight product (circa 2kg/m2)
  • Suitable for warm, cold & inverted roofs
  • Fast and economic waterproofing option for main contractors

Aesthetically pleasing

  • 5 colours of membrane available                                          (Thermofol – 3 colours, Thermoplan – 2 colours)
  • Contours to roof shape and detailing
  • Full range of colour coded accessories

Elasticity properties

  • Withstands thermal and structural movement
  • Suitable to temps of ≤ -30 °C
  • Reinforced Membranes typically have elasticity of approx. 19%

Synergy with BauderSOLAR and FLL Fulfilled

  • Market leading lightweight solution for Single Ply and PV non penetrating system
  • All membranes 1.5mm or thicker are root resistant and suitable for installation with a variety of green roofs

Homogenous joints

  • Membrane seams once welded become ‘one’
  • Stronger at join than rest of membrane

Cold application

  • Torch free installation
  • Installation by hot air only
  • Reduced health & safety practices for installation
  • Can be used on combustible substrates and details

Fast application

  • 30m2 on a membrane roll
  • Single layer installation
  • Labour costs reduced due to fast installation
  • Mech fastened is not temperature dependant 
  • New build projects watertight quicker
  • Simple detailing

Reinforced with polyester  

  • Strengthens waterproofing
  • Tensile strength of >1000N/50mm
  • Reduces thermal expansion and movement

Environmental Product Declaration

CE markings

  • All membranes and insulations carry a CE mark as required by the Construction Products Regulations

Guarantee available

  • 10-25 year guarantees available (depending upon thickness of membrane)
  • Product, Workmanship & Design can all be covered
  • Consequential Loss and Pure Financial Loss can be included
  • Fixing to the existing substrate can be included

Different membrane thicknesses available

UV stable  

  • Membranes have UV stabiliser ensuring they are protected from UV degradation

Vapour permeable membrane

  • Can overlay existing waterproofing where a small amount of entrapped moisture is present
  • The membrane allows any vapour pressure to dissipate in a controlled fashion

FM certified

  • 28 assemblies tested and certified by Factory Mutual
  • All mechanically fastened with different insulation types and thickness

BBA Certified and achieves BROOF (t4)

  • Independently tested and confirmed performance characteristics. Durability statements of >35 years for PVC and >30 years for FPO
  • Bauder have completed numerous Single Ply system fire performance tests to BROOF (t4) at both zero and 45 degrees; a selection of these is detailed in the BBA Certificates. For a full list please contact the Single Ply Product Manager.

Why Single Ply?

Single Ply is quick to install and cost effective. It’s durable and flexible and Bauder is committed to reducing the impact our single ply options have on both society and the environment. All our single ply offerings come with a valuable guarantee. Bauder works hard to ensure all our products meet the latest criteria for various accreditations.


The systems are installed using hot air welding techniques with mechanical fastenings or adhesive bonding to provide solutions that are durable, resilient to the natural elements and give excellent fire resistance. The quality and experience of the installing operative is paramount to ensuring a successful project. Bauder Approved Contractors are the only people fully trained and certified to install our products. They provide the necessary experience that our exceptional guarantee demands.

Green Credentials

The mechanical fix option for either single ply system makes it possible to remove independent components. If only the membrane requires renewal, this element can be replaced without affecting the insulation and vapour barrier. Bauder PIR insulation is CFC and HCFC free with zero ODP and extremely high thermal efficiency. Recycled PVC membranes are converted into other components and all our single ply production waste is recycled into the manufacturing process, enabling us to keep the use of raw materials to a minimum. We reduce water consumption by using automated rotation cooling systems in our manufacturing production, drastically reducing energy use and avoiding pollution of the environment.

Which System is Right For My Project?

Your local Bauder technical manager will help you to choose between our two single ply systems.

  • Thermofol PVC has a membrane with high tensile strength of 1100N/50mm, containing polymers to ensure flexibility at -30°C. Its formulation is resistant to chemicals and micro-organism attacks. Bauder employ a flame-free installation using hot air welding.
  • Thermoplan FPO membrane has a high tensile strength of 1200N/50mm and contains high-quality polymers to ensure it stays flexible at -45°C. The membrane has no inherent memory and will not shrink.
Both systems are halogen-free.

The Single Ply Roofing Association (SPRA) represents membrane manufacturers, associated component manufacturers and specialist sub contractors and aims to ensure the delivery of best value single ply roofing systems, through a quality assured partnership. By specifying products and specialist installation by SPRA Manufacturer, Associate and Contractor members you can be assured that all parties meet strict quality criteria. Compliance with these criteria and with the Code of Conduct is assessed at application, by annual audit and by random spot checks. For further information and to download the industry design guide, visit

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