APP Waterproofing Membrane System

Torch‑applied APP modified bituminous sheets (2–5 mm)

Five‑layer APP modified bituminous membranes reinforced with fleece (glass fiber or polyester) for watertight, durable protection on roofs, basements, and below‑grade structures.

Water‑tight under pressure

Softening point ≥150°C

No cracking at 0°C

High tensile & tear strength

When Waterproofing Must Stay Sealed Long‑Term

Large roof slabs, basements, raft slabs, tunnels and other critical areas need reliable waterproofing that resists puncture, tearing, and temperature variation.
APP modified membranes address this through reinforced bituminous sheets designed for water‑tightness, dimensional stability, and durable performance when installed as a complete system.

How Torch‑Applied APP Membranes Work On Site

Substrates are checked for hollowness and repaired with polymer‑modified mortar; the surface is cleaned of dust/oil and made level and sound.
A bitumen‑based primer is applied and allowed to dry tack‑free (about 6–8 hours).
The membrane is aligned, then the primed substrate and membrane underside are heated with a gas burner until softening; the roll is pressed down to bond while maintaining a minimum 100 mm overlap, with bitumen bead extrusion as seal confirmation.
For exposed roofs, the membrane is finished with aluminum coating for non‑foot traffic or protected with screed mortar for foot traffic.