Thermofol PVC System

Our Thermofol PVC system includes polymers to create a flexible waterproofing membrane that is heat welded.

When to specify...

The Bauder Thermofol System is suited for lightweight and fast track construction projects for new build, refurbishment, and overlay scenarios. PVC Thermofol membranes of ≥1.5mm have been tested for root barrier penetration (EN 13948/FLL) making them suitable for extensive green roofs. The system can also be specified with the BauderSOLAR F and BauderSOLAR G LIGHT PV arrays.

Bauder Thermofol System achieves a CCPI mark which recognises that any claims made about it have been independently assessed across 11 clauses, providing greater clarity by offering improved product information. This gives specifiers confidence in the knowledge that they will have unambiguous information when deciding which of our systems is best for their new build or refurbishment project.

Enhance with:
■ Extensive green roofs ■ Solar PV ■ Biosolar PV

Characteristics of the system

■□ Membrane thicknesses available 1.2, 1.5, 1.8, and 2.0mm.
■□ Thermofol membrane is reinforced with pre-coated polyester cross weave matting.
■□ Acoustic rain noise solution with thirty party testing laboratory SRL is available from Bauder Technical Dept.
■□ FM Approved Assemblies as defined on the FM online database ‘RoofNav’.
■□ Comprehensive range of guarantee packages to fulfil cover requirements for the project (dependant on system/product selection). For more information contact our technical dept for a sample guarantee outlining cover level, terms and conditions.

Verified properties

CCPI Verification 0007700024/1025​:
■□ This systems CCPI mark provides accuracy of data delivering assurance to specifiers. 

BBA Certificate 06/4354:
■□ Fire classification BROOF(t4) to BS EN 13501-5 tested to TS 1187 test 4 for external fire exposure on defined permutations of product build up.
■□ Fire properties – membranes deemed “unrestricted” in certain circumstances as categorised in BBA certificate.
■□ Service life > 35 years.
EPD Certification:
■□ Membranes.
■□ Insulations.
FM Approval:
Defined assemblies are approved for mechanically fastened systems and it is possible for ballasted installations to achieve compliance when FM guidelines are followed.

Mechanically Fixed                                Adhered                 



  Function Product name Thickness
1 Cap sheet ​BauderTHERMOFOL U15 FR (for mechanically fixed)
BauderTHERMOFOL U15 V FR (for adhered, 1.5mm PVC membrane with 2mm laminated fleece)
2 Insulation (0.15) BauderPIR FA 140
(or as
  Warm roof insulation options BauderPIR FA tapered
BauderROCK flatboard
BauderROCK tapered
variable variable
3 Air and vapour
control layer
Other AVCLs may be specified according to project requirements.
2.5 2.5
System build-up mechanically fixed 141.66 6.27
System build-up adhered 146 8.7
In-depth and up-to-date product specific technical data is available for each element within a system.
Download from our technical-centre

Other configurations:
Thermofol PVC System with Loose laid fleece-backed membrane & inverted EPS insulation with a ballast surface.

Cap sheet colours

Bauder Thermofol is available in three colours.


  Light grey        Blue grey        Anthracite


Approvals, certification and guarantee

■□ Comprehensive range of guarantee packages to fulfil cover requirements for the project (dependant on system/product
      selection). For more information contact our technical department for a sample guarantee outlining cover level, terms
​      and conditions.
■□ CCPI Verification Number 0007700024/1025 for Bauder Thermofol Systems.
■□ BBA Certificate 06/4354.
■□ FM Approved.
■□ DD ENV 1187:2002 & DIN16 734 European Standard Fire Exposure.
■□ Certified under FLL guidelines for root resistance.
View certifications here ►

Installation and maintenance

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.
Go to approved contractor information ►
Go to maintenance advice ►