APP Bitumen Membrane

InsuSol

Manufactured with premium bitumen modified with Atactic Polypropylene (APP) and reinforced for strength and stability, Insusol provides excellent resistance to heat, ageing, and weather exposure.

ModifierAPP
Thickness1.5 – 6 mm
ApplicationTorch-On
InsuSol
Product Overview

Engineered for the job it protects.

Manufactured with premium bitumen modified with Atactic Polypropylene (APP) and reinforced for strength and stability, Insusol provides excellent resistance to heat, ageing, and weather exposure. Ideal for both above-ground and below-ground applications, Insusol is commonly used on flat and low-slope roofs, foundations, basements, podiums, terraces, and wet areas. Its enhanced thermal resistance makes it especially suitable for regions with high temperatures and strong UV exposure.

Insusol is easy to install using torch-on application, forming a seamless, durable waterproofing layer that adheres securely to concrete, metal, and other prepared substrates. Once installed, it delivers reliable protection against water ingress, moisture damage, and structural deterioration.

Key Features
  • APP modified bitumen for superior heat and UV resistance
  • Strong, durable reinforcement for long service life
  • Excellent waterproofing performance
  • Suitable for roofing, foundations, and wet areas
  • Torch-on application for secure adhesion and seamless coverage
Available Options

Reinforcements

Polyester (PES)Fiberglass (FG)Reinforced PolyesterCompound Base

Thicknesses

1.5 mm – 6 mmCustomized
Surface Finish

The underside of the membrane is laminated with a thin, thermo-fusible polyethylene burn-off film to ensure efficient torch application and optimal adhesion. The membrane is available with a wide range of upper surface finishes, including multi-colored mineral slates, aluminum foil, sanded finishes, and polyethylene film.

Aluminum
Aluminum
Sand
Sand
Red Granules
Red Granules
PE Film
PE Film
Green Granules
Green Granules
Grey Granules
Grey Granules
White Granules
White Granules
Black Granules
Black Granules

Custom surface options and colors are available on request.

Surface Finish Flyer
Technical Data

Carrier: PES

PropertyTest MethodValue
Tensile Strength – LongitudinalEN 12311-1600 N/5cm
Tensile Strength – TransverseEN 12311-1400 N/5cm
Elongation @ Break – LongitudinalEN 12311-130%
Elongation @ Break – TransverseEN 12311-135%
Heat Stability (Flow Resistance)ASTM D-5147 / EN 1110120°C
Cold FlexibilityASTM D-5147 / EN 11090 to -2°C

*Insutech reserves the right to modify product specifications, descriptions, and technical information at any time without prior notice.

Installation

Application, Step by Step.

01 / 06
01Surface preparation

Clean the substrate of dust, debris and standing water, then repair any cracks or voids so the membrane can bond to a sound, even surface.

02Priming

Apply a bituminous primer evenly across the whole surface and allow it to dry completely before any membrane work begins on the area.

03Membrane positioning

Unroll and align the membrane on the primed surface, allowing the specified side and end overlaps before any bonding takes place.

04Torch-on application

Heat the burn-off film with a propane torch while progressively unrolling, pressing the membrane firmly onto the prepared substrate.

05Overlaps and sealing

Torch and seal every overlap with a rounded trowel, checking each joint to achieve continuous, fully watertight seams across the surface.

06Detailing and protection

Finish upstands, drains and penetrations with reinforcing details, then protect the membrane before backfilling, screeding or tiling.

Application Tutorial

Storage

Check Insutech's Storage Guide for full guidance on storing this product.

Storage Guide

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