Ardex WPM 189 (Shelterbit Duo Mineral Membrane) is a combined APP (Atactic Polypropylene) and SBS (Styrene-Butadine-Styrene) plastomeric type modified bitumen membrane, consisting of a specially formulated bituminous compound of distilled asphalt modified with selected high grade visco-elastic polymers and reinforced with a combined reinforcement (polyester and fibreglass).
Scope of use
Ardex WPM 189 (Shelterbit Duo Mineral Membrane) isused as a multi-layer membrane in horizontal or vertical applications for waterproofing balconies, terraces and roofs. Ardex WPM 189 (Shelterbit Duo Mineral Membrane) is the final layer in the system
New Zealand Building Code (NZBC)
The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:
- Clause B2 Durability: Performance B2.3.1, B2.3.1(b)
- Clause E2 External moisture: Performance E2.3.1, E2.3.2
- Clause F2 Hazardous building materials: Performance F2.3.1
The application of Ardex WPM 189 Shelterbit Duo should be carried out by an approved Applicator. Installation shall be strictly in accordance with the manufacturer’s recommendations. Acceptable substrates to which Ardex Shelterbit is to be installed must be properly prepared prior to membrane installation. All surfaces must be dry, clean, smooth, and free of sharp edges, loose or foreign materials, oil, grease and other materials which may damage the membrane. Prior to the application of Ardex Shelterbit base substrate surfaces should be primed with Ardex Shelterbit Coverage of primer will depend on the porosity of the substrate. Ardex Shelterbit is normally fully bonded to the prepared substrate with side laps of 100mm and end laps of 150mm. Overlaps shall be sealed by torch
Building maintenance is important. Annual cleaning of the surface and visual inspections are recommended.