Casali Dermabit Extra APAO
- Case Studies
- 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|
|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|
|– 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|
Due to the location of the building in the Wynyard Quarter there is a high concentration of contaminants, high water table and saline. A waterproofing membrane was required not only to handle hydrostatic pressure but also to act as a vapour barrier protecting indoor air from potential ingress of hydrocarbon vapours.
St Mary’s College
Tanking to footings and precast panel retaining walls, lift pit and storage areas, plaza deck, roof and gutters
Rose Garden Apartments
Tanking to footings and precast panel retaining walls, AFS walls, lift pit and storage areas, plaza deck, roof and gutters.
ASB Building - North Wharf
In the ASB project, Casali features across the roof expanse of buildings 22 and 23, including in roof gutters on external balconies and beneath timber decking. It is used in the landscaped area and external plant area and under parapets.
Sudima Hotel (Roofing)
The building of a 4.5-star environmentally friendly roof that would reflect the high New Zealand UV, provide a water collection option, not contaminate water going to storm water and provide a 20-year product and labour warranty.