Codemark Certified external airtight membranes for Closed and Open Joint Cladding

External Airtight Membranes

The two main ways to achieve airtightness in the building envelope are internally or externally, or in other terms, ‘inside of the services zone’ or ‘outside of the services zone’. The use of traditional internal air barriers can be more complex and costly to install, due to the need to accommodate building services such as electrical, lighting, heating and drainage systems. An internal air barrier
is only as good as it’s installation. If all the service penetrations are not adequately sealed, performance will be compromised.

By moving the air barrier to the external side of the structural frame, external air barrier systems such as Wraptite allow for an almost penetration-free airtight layer, which can be installed faster and more robustly. Far simpler than internal options an external air barrier system like Wraptite will maintain the envelope’s integrity, with less building services and structural penetrations to be sealed, and less room for error.

ProctorPassive Wraptite SA

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. There are two grades of Wraptite self-adhesive airtight membranes:
— Wraptite SA: closed joint cladding applications
— Wraptite UV-SA: for high uv applications e.g. behind open-joint cladding

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.

Our range of Wraptite external air barriers solve the problem of reliably achieving airtightness in buildings, with two robust solutions for windows and openings comprising of either DriFlash Tape or Liquid Flashing options. 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

CodeMark Certified