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Waterproofing and sealants

Torch-on bitumen membrane (SBS, APP)

Polymer-modified SBS or APP bitumen sheets with reinforcement, torched onto the substrate to waterproof roofs, decks, basements and tanks.

Category
Waterproofing and sealants
Standards
ASTM D6164 · ASTM D6222 · EN 13707 …
Torch-on bitumen membrane (SBS, APP)
Illustration

Overview

SBS membranes stay flexible at low temperatures; APP membranes resist heat and UV better. Polyester or glass-fibre reinforcement gives tensile strength and dimensional stability.

Performance depends on the primer, minimum laps, fully sealed edges and detailing at corners and penetrations. Exposed membranes need a mineral-surfaced cap sheet or protection layer.

Uses

  • 01Concrete flat roofs and terraces
  • 02Basement walls and slabs (external tanking)
  • 03Water tanks and underground tanks
  • 04Concrete roofs of factories

Selection and acceptance checks

  • Check thickness, polymer type and reinforcement
  • Check laps, torched edges and pipe details
  • Flood test before laying the protection layer

Reference standards

  • ASTM D6164
  • ASTM D6222
  • EN 13707
  • EN 13969

For reference only. The standards for each project follow its design documents, current Vietnamese codes and the investor’s requirements.

Sectors and solutions

Sectors

High-rise buildings Infrastructure Commercial buildings FDI factories

World Steel services

General contracting Expansion and upgrade Warranty and maintenance

Keywords