A new self-build farmhouse in the beautiful Scottish countryside has been fitted with the
high-performing Wraptite air-barrier. The project is designed to Passivhaus standards by
Architect Frances Strachan-Friar. Talla Fiodha (‘timber or wooden hall’ in Gaelic), Charleston
Farm, near Errol, Perthshire, will be the new home for Frances and her husband.
From the outset, the aim was to achieve a more sustainable design and follow a different
approach from the traditional timber kit. After undertaking significant research into different
types of construction, the architect selected Xilonor CLT cross-laminated timber installed by
Glulam Solutions Ltd., Inverurie.
Frances Strachan-Friar commented on how the selection of Wraptite has benefitted the
development. “The specification of the correct type of airtightness barrier was critical in
achieving thermal efficiency. Wraptite was chosen because it allows the airtightness layer to
be fitted to the outside of the construction. In doing so, the external application of Wraptite
provides essential protection in the form of waterproofing and weatherproofing for the CLT
during the build.
“The Wraptite system was great and easy to apply, especially around junctions, enabling us
to seal all of the junctions completely. The use of a traditional membrane would not have
given the same performance.
I have previously specified products from the A. Proctor Group, but this was the first time
using Wraptite. Proctors provided a comprehensive Toolbox Talk and have been a great
support throughout the project.”
The Wraptite system is the only self-adhering vapour permeable air barrier certified by
the BBA. It combines the critical properties of vapour permeability and airtightness in one
self-adhering membrane. As a result, it provides high vapour permeability in a continuously
sealed, airtight membrane.
The high vapour permeability of the Wraptite air barrier allows the substrate beneath to
dry quickly and moisture vapour to escape and reduces the likelihood of mould, mildew,
condensation, timber distortion and metal corrosion. The vapour permeability of Wraptite
also allows any water vapour to escape efficiently, thereby avoiding interstitial condensation
problems.
Designed to replace traditional airtightness methods cost-effectively, Wraptite is a low-resistance vapour permeable air barrier, durable, flexible and lightweight, allowing for easy
installation, with the added benefit of providing temporary protection against the elements
during construction

Wraptite - Charleston Farm, Perthshire

Wraptite - Charleston Farm, Perthshire
Brochures

Datasheets

Installation Guides

Material Properties

BIM Objects

UK Availability

Certification

Global Availability

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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