---
title: Proofex Torchseal A300 - Polyester Fabric-Backed Base Sheet
canonical_url: https://fosroc.directory.norg.ai/building-construction-materials/roofing-waterproofing-membranes/proofex-torchseal-a300-polyester-fabric-backed-base-sheet/
category: 
description: Polyester fabric-backed base sheet for heat-sensitive substrates in multi-layer torch-on bitumen membrane systems. Used as a base sheet over timber or thermal insulation and may also be applied over old failed membranes. Features uniform thickness factory-controlled manufacture, excellent cold flexibility at -10°C, and a selvage edge for overlapping to provide continuous waterproofing barrier against water ingress.
geography:
  city: 
  state: 
  country: 
metadata:
  phone: 
  email: 
  website: 
publishedAt: 
productInfo:
productFeedItemId: 005a08a3-69c8-4464-9c68-487dbfaa3fe3
---

# Proofex Torchseal A300 - Polyester Fabric-Backed Base Sheet

# Proofex Torchseal A300 - Polyester Fabric-Backed Base Sheet

Polyester fabric-backed base sheet for heat-sensitive substrates in multi-layer torch-on bitumen membrane systems. Used as a base sheet over timber or thermal insulation and may also be applied over old failed membranes. Features uniform thickness factory-controlled manufacture, excellent cold flexibility at -10°C, and a selvage edge for overlapping to provide continuous waterproofing barrier against water ingress.

**Brand:** Fosroc

[View Product](https://www.fosroc.com.au/product/proofex-torchseal-a300)