Wraptite® - External Self Adhesive Air Tight Membrane

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.

Wraptite® - External Self Adhesive Air Tight Membrane product image
NBS - Wraptite
NBS - Wraptite

Product Information

Wraptite Warranty

Please click on the link below to apply for the A.Proctor Group 15-year Wraptite Warranty application form. The form requires information related to your business and project to gather enough information for us to provide a warranty for your specific project.

If you have any questions about the form or our products then please call our technical team on 01250 872261 or send us an email: reception@proctorgroup.com

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!

Potton Passivhaus Showhouse - Image

Wraptite In Roofing

Wraptite In Roofing - Image

Where a full wall and roof airtight envelope is required Wraptite can be used in both applications. The self-adhered backing not only ensures an airtight seal but resistance at laps against water penetration, dust, air infiltration and wind resistance making it an excellent choice for this application.

  • Self adhered
  • Airtight yet vapour permeable
  • No ventilation required
  • Can be used in all wind zones
  • No maintenance required
  • Class B, s1 d0 in accordance with BS EN 13501-1:2007
  • BBA Certified (Cert. No. 15/5274)
  • Tough 3-Layer Laminate resists punctures and tears
  • Lightweight and easy to install
  • Wide service temperature range
  • Can be left exposed for up to 90 days (North America) or 120 days (UK) during construction (Please contact the A. Proctor Group’s technical department for advice on specific geographical locations)
  • Free from Volatile Organic Compounds

Wraptite Corners

Wraptite Corners - Image - 1
Wraptite Corners - Image - 2

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.

Cross Laminate Timbers (CLT) and Wraptite

What is Cross Laminate Timber (CLT)?

Cross Laminated Timber, or CLT, is an engineered timber product that consists of planks of sawn, glued, and layered wood, where each layer is oriented perpendicular to the previous. By joining layers of wood at perpendicular angles, structural rigidity for the panel is obtained in both directions, similar to plywood but with thicker components. In this way, the panel has great tensile and compressive strength.

Why use CLT?

CLT is claimed to consume only 50% of the energy required to produce concrete and a mere 1% of that needed to produce steel.
Prefabricated panels can be delivered to site as they are needed, making this construction method ideal for schemes with limited on-site storage capacity. They are then lifted into place, using pre-installed lifting straps, and rapidly assembled, greatly reducing construction time and therefore cost.
It’s a sustainable material because it’s composed of wood, a renewable resource (usually from reforestation), and doesn’t require the burning of fossil fuels during its production. CLT buildings are gaining traction, as they are often cheaper, quicker, cleaner and quieter to build than traditional structures.
The panels can function as walls, floors, furniture, ceilings, and roofs; CLT’s thickness and length can be adaptable to the demands of each project.

CLT Advantages

  • As a renewable material, stores carbon throughout its usable lifespan
  • Avoids thermal bridging (in parapet walls or flat roof solutions)
  • Good delivery of airtight envelope
  • Greater load distribution can reduce thickness of transfer slabs
  • Simple and fast onsite construction process
  • Vapour-permeable wall construction

CLT Limitations

  • Requires completed designs ahead of start on site, to allow for offsite manufacture
  • Use limited to above damp-proof course or equivalent level
  • Requires accurately set out groundworks
  • Requires external cladding or render to provide weatherproof envelope
Cross Laminate Timbers (CLT) and Wraptite - Image - 1
Cross Laminate Timbers (CLT) and Wraptite - Image - 2

Wraptite and CLT

CLT panels should be protected from moisture during construction and allowed to sufficiently dry before the application of linings. This includes adequate protection from rain and ground water on site. High initial moisture content of the timber elements — typically through exposure to weather during construction — creates a potential for interstitial condensation.
An air barrier, like Wraptite, should be installed on the outside face of the panels. The boards within the panels are not edge-glued, and therefore without this air barrier, leakage may occur.
Combining vapour permeability and airtightness in a unique, self-adhering membrane, Wraptite offers a fast and effective solution to unplanned air leakage and its detrimental effects on energy performance. Wraptite not only ensures an airtight seal but resistance at laps against water penetration, dust, air infiltration and wind resistance making it an excellent choice for this application.

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.

The Zero Bills Home - ZEDfactory - Image

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.


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