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Casali Dermabit Extra APAO

Features

Key Features

  • Thermal operating range of -25°C/+150°C
  • Suitable for use in all NZBC Climate Zones
  • Approved for use as a waterproofing system under trafficable surfaces.
  • High elasticity
  • Excellent resistance to atmospheric ageing (excellent resistance to UV rays)
  • Excellent joint seal and adhesion to any type of approved substrate
  • High resistance to mechanical and thermal stress
  • Used for more than 40 years in more than thirty countries
  • Compatible with EFVM testing.

BRANZ Appraisal No. 647 (2017)

High-performance torch-on waterproofing membrane for multi-layer applications, with or without insulation.

The Allco Casali -Dermabit Extra APAO (Amorphous polyalphaolefin) membrane system is a high-performance torchon waterproofing membrane for two-layer applications and an ideal choice for a wide range of waterproofing applications for residential and commercial roofing. Approved for use as a waterproofing system under trafficable surfaces. It is suitable for use in all NZBC Climate Zones.

The compound used in Dermabit® membranes contains distilled bitumen and the latest generation of technopolymers (APAO) that ensure excellent properties of flexibility, elasticity and adherence as well as making Dermabit extremely resistant to ageing.

Thanks to the use of reinforcement with a high mass per unit area and continuous non-woven polyester stabilised by means of glass strands, Dermabit Extra guarantees outstanding mechanical performance and dimensional stability (±0.2/0.3%)

Casali Dermabit Extra is specially designed for large surfaces subject to high thermal stress due to direct sunlight or high-temperature build up.

The top is finished in silica sand, natural or black slate chips disseminated uniformly and firmly anchored; there is a smooth bottom finish in torched off polyethylene sheets.

Product Pluses: Guaranteed by more than 25 years in the field, certified solutions, versatile and reliable at any latitude, extensive thermal operating range (-25°C to +150°C), fast and easy to apply, excellent resistance to UV and ageing.

Laboratory Tested and Appraised by:

Lab Test Standard u.m. Dermabit
Extra 30160 (Base) Dermabit
Extra 43170
Thickness EN 1849-1 mm 3 4
Mass per unit area EN 1849-1 kg/m² 3 5.2
Ultimate tensile strength
– Resistance at break – Longitudinal EN 12311-1 N/5cm 700 850
– Resistance at break – Transversal EN 12311-1 N/5cm 600 650
– Elongation at break – Longitudinal EN 12311-1 % 40 40
– Elongation at break – Transversal EN 12311-1 % 40 40
Tearing Resistance
– Resistance at break – Longitudinal EN 12310-1 N 150 170
– Resistance at break – Transversal EN 12310-1 N 150 170
Flexibility at low temperatures EN 1109 °C -25 -20
Creeping at heat EN 1110 °C +150 +150
Thermal ageing in air EN 1296 ∆ t°C 5 5
Reaction to fire EN 13501-1 BS 476 F.AC Rating F.AA Rating

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