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Wraptite External Air Tightness Barrier

Wraptite BIM Objects & Performance Specifications

File Format
Wraptite Performance Specification PDF
Wraptite BIM - Warm Roof, Slate, Softwood Sarking IFC RVT
Wraptite BIM - Warm Roof, Tile, Plywood Sarking IFC RVT
Wraptite BIM - Steel Frame IFC RVT
Wraptite BIM - Steel Frame - Wraptite and Facadeshield IFC RVT
Wraptite BIM - Steel Frame - Wraptite and Reflectite Tape Over Board Joints IFC RVT
Wraptite BIM - Steel Frame - Wraptite and Wraptite Tape Over Board Joints IFC RVT
Wraptite BIM - Steel Frame - Wraptite Tape Over Board Joints IFC RVT
Wraptite BIM - Ventilated Timber Frame - Wraptite IFC RVT
Wraptite BIM - Ventilated Timber Frame - Wraptite Tape Over Board Joints IFC RVT
Wraptite BIM - Ventilated Timber Frame - Wraptite Tape Over Sheathing IFC RVT
Wraptite BIM - Ventilated Timber Frame - Reflective Wraptite Tape Over Sheathing IFC RVT

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Overview

Our range of Wraptite external air barriers solve the problem of reliably achieving airtightness in buildings, with a robust two component solution comprising Wraptite & Wraptite Tape. This new approach saves on both the labour and material costs associated with meeting the demands of modern energy efficiency requirements in both commercial and residential buildings. Moving the air barrier to the outside of the building, away from the 'services zone' means there are far fewer potential penetrations to the air barrier and that there is no requirement for expensive specialist components such as airtight junction boxes, light switches or downlighter hoods. Wraptite is a unique external airtight solution, which is not only highly vapour permeable, yet airtight – but also self-adhered to ensure a consistent airtight external seal.

  Downloads

Airtight Brochure

Brochure

Airtight Installation

Installation

BBA

BBA

BIM Object

BIM Objects & Performance Specs

Potton Passivhaus Showhouse - 0.5 Air Changes Per Hour

Passivhaus is a very low energy construction standard that minimises a buildings requirement for heating or cooling, due to excellent thermal performance and extremely good airtightness. The UKs first permanent Passivhaus show house, has been built by Potton using the Kingspan TEK® Building System. It joins four existing show homes at their Self Build Show Centre in St Neots.

The Passivhaus standard must be demonstrated by means of an airtightness test. The air change rate must be less than or equal to 0.60ac/h (air changes per hour), under test conditions, to meet Passivhaus levels. At a recent Self Build Live event on the 4th March 2016, Potton managed to improve on their target of 0.60 ac/h (air changes per hour), to 0.5 ac/h!


Internal Airtightness

As anyone who's ever failed an air tightness test knows, forming a continuous internal air barrier is a time consuming & costly process. The multitude of components required with the internal approach regularly includes expensive speciality airtightness products such as airtight electrical boxes, downlighters, light switches & extractor fans, as well as an airtight VCL, butyl sealing tape & plenty of silicone mastic. Internal air barrier solutions:

  • Require expensive specialist components
  • Are highly labour intensive
  • Have multiple penetrations for services
  • Are prone to breach during building occupancy
  • Air leakage test failures can be expensive to remedy

External Airtightness

External air barriers, which are commonly specified in North America, offer excellent reliability & consistency. Window, door & pipe penetrations are made airtight in a straightforward manner with our Wraptite Tape. Wraptite was recently used on a Kingspan Potton airtight construction, where an air permeability test result of 0.5m3/m2/hr was achieved, with no expensive remedial work required. External air barrier solutions:

  • Require only two components
  • Have far fewer penetrations for services
  • Greatly reduce the likelihood of expensive remedial work
  • Are consistently quicker & easier to install
  • Simplify passing air tightness testing

Wraptite

A self-adhesive vapour permeable air tightness membrane installed outside the services zone. Assists in achieving good air tightness testing results.

Installation Guide

Wraptite Tape

Air tightness tape, tear resistant with high vapour permeability for internal and external applications. Fully bonds to all standard substrates.

Wraptite Tool Box

Ensure excellent installation with our new Wraptite Tool Box containing utility knife, stiff brush, marker pen, measuring tape & rubber roller.

Wraptite FZ

Wraptite-FZ is a vapour permeable air barrier membrane for use at floor junctions.It is durable, flexible and lightweight, and offers temporary protection against wind driven rain, snowand dust.

 Downloads

Wraptite Liquid Flashing (LF)

Wraptite Liquid Flashing (LF) is a high-quality, gunable, low-odour, elastomeric,polyether, liquid-applied flashing and detailing membrane.

 Downloads

New!
  Wraptite Corners

Wraptite Preformed Airtight Corners have been developed for the difficult areas around doors and windows where maintaining good air barrier continuity is difficult and time consuming. Wraptite corners’ simple design and installation process makes sealing openings against air leakage simple, just peel off the release liner, stick the corners in place, then install the Wraptite membrane as normal. This helps achieve the best possible results in the shortest possible time.

Once installed, the corner sections provide the same vapour permeable air barrier performance as the Wraptite membrane itself, ensuring air leakage and water ingress are minimised without trapping construction moisture or causing condensation.


The Zero Bills Home - ZEDfactory

Wraptite airtight membrane has been selected by the Zero Bills Home Company and RIBA award winning development pioneers ZEDfactory in their latest innovative solution to deliver zero carbon housing. The Zero Bills Home has been built at the world-renowned BRE Innovation Park in Watford.

The Zero Bills Home concept, is said to offer a fresh approach to the significant challenges faced by the housing market, and offers a pre designed, engineered, and costed housing solution with an option for customisation. The intelligent design seeks to minimise energy requirements, make home energy bills a thing of the past and offer a truly sustainable solution to the demand for more housing.

Wraptite, the only self-adhering vapour permeable air barrier certified by the BBA, was installed as part of the OSB panel construction of the home. The use of Wraptite in the construction makes a significant contribution to a building’s thermal performance by preventing lateral air movement. It also provides high vapour permeability in a continuously sealed, self-adhered, airtight membrane.

Unlike internal air barriers, which can be complex and costly to install due to the need to accommodate building services such as electrical, lighting, heating and drainage systems, Wraptite was applied externally, quickly and easily to the OSB boards in continuous pieces. The membrane fully bonds to virtually any substrate, requiring no mechanical attachment to suppress air leakage around junctions or penetrations. On the Zero Bills Home project the results for airtightness were exemplary, achieving on the first test 1.3 ac/h at 50 pascals.

Another key benefit of the system is that Wraptite’s high vapour permeability allows damp sheathing 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.

Alongside Wraptite, an additional product selected from the A. Proctor portfolio was Roofshield, the unique air and vapour permeable pitched roof underlay, which has long been recognised as one of the highest performing roofing membrane solutions and the preferred choice of architects, developers and contractors.

The Zero Bills Home has been developed as a patented system and as a prototype for future building developments. The house is set to be one of the first homes assessed under BRE’s new Home Quality Mark, which provides a star rating system on the quality and sustainability of new homes. It is also awaiting planning permission for use on the next development of 94 new homes in Newport Essex for the Sir Arthur Ellis Trust.


Airtightness vs. Insulation

Select An Air Tightness Level -

Compliance with modern building regulations requires a wholistic approach that includes numerous energy efficiency measures. One area that is often overlooked at the design stage is improving the buildings designed air tightness beyond mandatory minimums. Using Wraptite externally can reduce a building's carbon emissions by 6.7% when keeping the same u-Value, or reduce the amount of insulation required by over 100mm whilst maintaining the same Dwelling Emission Rate. The reliability & consistent performance available with an external air barrier solution allows for:

  • A cost saving against insulation whilst meeting the same energy efficiency needs.
  • An increase in the usable floor area due to reduced wall thickness.
Airtightness PUR Insulation Insulation Cost Dwelling Emission Rate
7m3/m2/hr 230mm £44.39 15.6
3m3/m2/hr 130mm £24.78 15.6
1m3/m2/hr 110mm £23.94 15.6
1m3/m2/hr 230mm £44.39 14.5

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  A. Proctor Group Ltd, The Haugh, Blairgowrie, Scotland, PH10 7ER

Kingspan Potton

Wraptite was recently used in a Kingspan Potton timber frame construction in Cambridgeshire, where it achieved an excellent air tightness test result of 0.87 m3/m2/hr.

Sunshine Mosque

Wraptite air tight membrane was used as part of the refurbishment of the Sunshine Mosque dome in Melbourne, Australia, resulting in the domes being restored to their former glory with minimum disruption.

Contact Us

  8:30am - 5pm, Mon - Fri

  01250 872 261

  01250 872 727

  

  A. Proctor Group Ltd., The Haugh, Blairgowrie, PH10 7ER

 

Testimonials

"As a roofing contractor specialising in the larger, more prestigious, type of project, we prefer to use only the highest quality products. Therefore we use Proctor Roofshield wherever possible; we have been using it for over 15 years, together with their condensation risk analyses and U-value calculations."

Mike Camilleri - Camilleri Roofing

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