The Wraptite external air barrier system from A. Proctor Group has been chosen
for an exciting low energy homes offsite project for developer Osco Homes.
Commissioned by Kirklees Council, the site will demonstrate how high quality, energy-efficient housing can be achieved using offsite construction. The bungalows are designed to be light, spacious, and desirable but must also mitigate fuel poverty and provide a safe and healthy environment where residents can live.
The superior airtightness performance of the Wraptite membrane from the A. Proctor Group is the perfect solution, delivering significant benefits to the combination of in-factory manufacture and on-site housing construction.
Gwen Beeken, Managing Director at Osco Homes, describes how Wraptite was key to achieving a quality airtightness solution suited to offsite construction
“Although an essential requirement is that the homes had to meet Building Regulations, both the client and OSCO Homes were keen to exceed this. The use of high-quality panels, with a high-performance membrane, built in a factory and assembled on-site, enables OSCO Homes to achieve a better airtightness and higher level of insulation, helping to reduce heating bills. The ease with which Wraptite achieves a high level of airtightness and its ability to be joined across panels was key to its selection.
“Applying it in a factory environment, we can be confident of the quality of the installation, and the specially provided Wraptite Tape means making the joints onsite is simple
The Wraptite air barrier system offers a safer and simplified membrane system. It provides a fully self-adhered vapour permeable air barrier certified by the BBA and combines the critical properties of vapour permeability and airtightness in one selfadhering membrane. The self-adhesive membrane is easily applied in the factory, bonded externally to the substrate, and ensures that the membrane is held firmly in place, even during transportation, maintaining the quality of the system from installation to build and completion.
|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|
|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|
For any building to have an energy efficient, healthy, moisture free building envelope there is a clear need to manage the balance of Heat, Air and Moisture movement (HAMM) throughout the building’s life cycle from design, construction, completion and use.