An impressive new contemporary cliff top house in Poole Dorset has benefited from the superior airtightness performance qualities of Wraptite- SA.RB Studio Architects designed the property at 33 Cliff Drive in a modern open plan living style over three floors. Local developer Portus Homes selected Wraptite-SA, which combines the important properties of vapour permeability and airtightness in one selfadhering membrane.
Wraptite-SA, the only self-adhering vapour permeable air barrier certified by the BBA, was applied directly to the concrete walls behind the Grespania Coverlam porcelain external cladding. The introduction of Wraptite-SA in the construction made a significant contribution to the building’s thermal performance by preventing lateral air movement.
Matt Gorvin, Director at Portus Homes explained, “I had successfully worked with Roofshield vapour and air permeable pitched roof underlay from the A. Proctor Group on previous projects, and wanted a airtight, vapour permeable membrane, which could be used directly onto the blockwork walls. Wraptite-SA was the perfect choice in that it is selfadhesive, and could be applied directly over the concrete. The project was originally designed with an energy requirement to comply with the Code for Sustainable Homes Level 3, and by using Wraptite-SA we were easily able to surpass this.”
A key benefit of the system is that Wraptite-SA’s high vapour permeability allows the substrate beneath to dry quickly and moisture vapour to escape. This ensures good indoor air quality and reduces the likelihood of mould, mildew, condensation, timber distortion and metal corrosion.

Wraptite-SA - Cliff Top Home
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Material Properties
Wraptite-SA
Property | Test Method | Result |
---|---|---|
Roll Size | 1.5 x 50 m | |
Thickness | Calibrated Deadweight Micrometer | 0.65 mm |
Weight | Electronic Weigh Scale | 292 g/m2 |
Application Temperature - Air & Surface Minimum | -10 C | |
Service Temperature | -40 to 80 C | |
Water Penetration - Before Ageing | EN 1928:2000 Method A | W1 Class |
Water Penetration - After Ageing | EN 1928:2000 Method A | W1 Class |
Air Permeance | EN 12114 | 0.01 m3/m2/hr @50Pa |
Water Vapour Resistance Sd | EN ISO 12572(C) | 0.039 m |
Water Vapour Transmission | BS 3177:1959 | 893 g/m2/24hr |
Peel Adhesion | EN 1939 | 5.01 N/10mm |
Tensile Strength - MD | EN 12311-1 | 417 N |
Tensile Strength - XD | EN 12311-1 | 252 N |
Tear Resistance - MD | EN 12310-1 | 412 N |
Tear Resistance - XD | EN 12310-1 | 286 N |
Dimensional Stability - MD | EN 1107-2 | 0.3 % |
Dimensional Stability - XD | EN 1107-2 | +0.1 % |
Reaction to Fire | EN 13501 - 1 | B Class |
Flexibility at Low Temperature | EN 1109 | No cracks at -40C |
BIM Objects
File | Format |
---|---|
Wraptite - BIM Object - Steel Frame | IFC |
Wraptite and Facadeshield UV - BIM Object - Steel Frame | IFC |
Wraptite - BIM Object - Steel Frame With Reflectite Tape Over Board Joints | IFC |
Wraptite - BIM Object - Steel Frame Wraptite Tape Over Board Joints | IFC |
Wraptite - BIM Object - Wraptite Tape Over Board Joints | IFC |
Wraptite - BIM Object - Ventilated Timber Frame With External Airtight Membrane Wraptite | IFC |
Wraptite - BIM Object - Ventilated Timber Frame With External Airtight Membrane And Wraptite Tape Over Board Joints | IFC |
Wraptite - BIM Object - Warm Roof Slate With Softwood Sarking | RVT |
Wraptite - BIM Object - Warm Roof Tile With Plywood Sarking | RVT |
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