Orders & Technical Enquiries

Phone: 1300 737 787

Parchem Construction Supplies
FOSROC EdenCrete Flextool Dulux AVISTA EMER

Proofex Torchseal A300

Proofex Torchseal A300

Click thumbnail to enlarge

Polyester fabric backed base sheet, for heat sensitive substrates in multi-layer torch-on membrane systems

Replaces Index Rollbase PV



Proofex Torchseal A300 is manufactured by co-extrusion of a polymer - bitumen compound and a non-woven polyester reinforcement.
This non-woven polyester constitutes the lower face of the membrane which can be used to adhere the membrane to substrates or mechnically fixed.
The polyester fabric creates a micro air- space betweenthe membrane and the substrate through which vapour may easily escape.



Proofex Torchseal A300 is designed for use as a base sheet over timber or thermal insulation and may also be applied over old failed membranes.
Proofex Torchseal A300 is particularly suited as a base sheet for heat sensitive substrates in multi-layer torch applied bitumen membrane systems.
Proofex Torchseal A300 may be attached to the substrate by a number of methods dependant upon the type of surface:

  • Mechanically fastened
  • Fully or part adhered with an appropriate general purpose contact adhesive
  • Hot asphalt roll & pour method



  • Uniform thickness factory controlled in manufacture
  • Excellent cold flexibility -10°C
  • The polyester fabric creates a micro air- space between the membrane and the substrate through which vapour may easily escape
  • Manufactured with a selvage edge for overlapping purpose providing a continuous waterproofing barrier against water ingress


Product Fact Sheet

Proofex Torchseal Fact Sheet

Technical Data Sheet

Safety Data Sheets


Privacy Collection Statement

Parchem Construction Supplies Pty Ltd (ABN 80 069 961 968) ("Parchem") is a wholly owned subsidiary of DuluxGroup Limited. The terms "we", "us", "our" refer to the company and any of our affiliated companies.

Your privacy is important to us: Parchem will use the information you submit and may disclose it to third parties to respond to your enquiry. Parchem (and its marketing and communications agencies on its behalf) may also use your name and contact details to send you information for these purposes. Parchem may disclose the information to contractors, market research organisations, marketing and communications agencies and related bodies corporate for this purpose. If you do not provide the personal information requested, we will not be able to fulfil your request. We may also exchange your personal information with other related companies and our service providers, such as delivery companies and technology providers.

Please refer to our Privacy Policy, available on our website (www.parchem.com.au/privacy-policy/) or on request. It contains further details about: (i) the personal information we collect; (ii) what we do with it; (iii) where we send it; (iv) how you can access and correct it; (v) how you can lodge a privacy complaint regarding the handling of your personal information; (vi) how we handle those complaints; (vii) online privacy; and (viii) the types of service providers we use.

If you have any questions regarding the way Parchem handles your personal information or wish to seek access to, or correct, personal information we hold about you, please contact our Privacy Officer via privacy@duluxgroup.com.au or call +613 9263 5678.

Concrete & Construction Trade Store Locator

Find your nearest trade store...