Self-adhesive bituminous membrane, self-protected with HDPE cross-laminated film, coupled to a self-adhesive bitumen mass.

Indextene is a self-adhesive bituminous membrane, self-protected with a cross-laminated high-density HDPE film, coupled to a self-adhesive bitumen mass. The self protection of the cross-laminated high-density polyethylene allows for characteristics of dimensional stability of the membrane and a stable behavior when subjected to elongation both transversal and longitudinal.

Indextene is used to cover flat or sloped areas where the use of an open flame is not possible due to the materials or the site.

Indextene may be used to waterproof foundations, basements, insulation systems that do not resist fire or to protect structures from pollutants and salts.


No special tools are needed to apply Indextene – required are a sharp cutting edge, a pair of scissors, and a roller.

The roller is used to apply pressure to the material and to the overlaps which must be approx. 6cm longitudinally. An overlap line is indicated on the film 6cm from the edges and 8cm transversally.

For best results, the surfaces must be previously treated with a coat of primer.

Indextene’s underside is protected by paper. Remove about 50cm of paper at the start of the roll and press the material down onto the surface to be covered. Then, by pulling on the paper and unrolling at the same time, the material can be easily stuck to the working surface.

Indextene should be used in temperatures between 5 °C and 45 °C. It should not be applied in conditions of high humidity, frost, or rain.

Technical Characteristics
Indextene / HDPE
Thickness of  bituminous compound (UNI 8202) 1,40/0,10 mm
Total thickness (on request) (UNI 8202) 1,5 mm (2,0 mm)
Weight (UNI 8202) 1,6 kg/m†
Roll 20 m x 1 m
Colour grey
Water absorption (ASTM D570) 0,09%
Tensile strength L/T (ASTM D638/M) 43,5/56,9 N
Ultimate elongation L/T (ASTM D638/M) 435/380%
Resistance to tearing L/T (nail) (UNI 8202/9) 83/73 N
Adhesion on concrete with primer (ASTM D1000) 4,9 N/mm
Adhesion on steel (ASTM D1000) 5,8 N/mm
Resistance to puncturing (ASTM E154) 262 N
Transmission of water vapor (ASTM E96) 0,05 g/m† h
Resistance to water pressure (ASTM E1003) 500 kPa/48 h
Resistance to cold (DIN 52123) -40 °C
Working temperature -30 ºC / +80 ºC
Compound elongation (ASTM 1000) 2000%
Shelf Life

Rolls enclosed in the original wrapping: 12 months at 5 °C to 40 °C.


The protective polyethylene film is not UV resistant: it should therefore be protected from the sun within months of application.

Health & Safety

No known hazards.

Important Note

This data sheet is issued as a guide to the use of the product(s) concerned. Whilst a.b.e.® Construction Chemicals endeavours to ensure that any advice, recommendation, specification or information is accurate and correct, the company cannot – because a.b.e.® Construction Chemicals has no direct or continuous control over where and how a.b.e.® Construction Chemicals’ products are applied – accept any liability either directly or indirectly arising from the use of a.b.e.® Construction Chemicals’ products, whether or not in accordance with any advice, specification, recommendation or information given by the company.

Further Information

Where other products are to be used in conjunction with this material, the relevant technical data sheets should be consulted to determine total requirements. 

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