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Airtightness


Richard Hollard - Proclima
021 655 199
Richard.hollard@proclima.co.nz
www.proclima.co.nz
Proclima is proud to be supporting the first Parka Wrap project at Ara Education Charitable Trust. Improving the performance of buildings for the energy and health outcomes for people is at the heart of what we do, so improving existing buildings is critical.
The Parka Wrap system uses proclima’s peel and stick weathertightness product ADHERO to protect the existing structure and cladding during works. It also provides an airtightness function for the building, and the insulation is installed outside the ADHERO line.
Proclima tapes are used for joining to other building elements including the windows.
Connection to windows:
TESCON EXTORA profil is used to connect the windows on all four sides on the internal face – this replaces PEF rod and foam and has been E2/VM2 tested.
On the outside face of the window a connection is made at head and jambs using 100mm wide TESCON EXTORA tape and this is connected back to the weathertightness line of ADHERO.
In renovation work, airtight junctions between floor and wall, and wall and ceiling can be challenging to achieve, so in this project the use of AEROSANA VISCONN – a spray or brush-applied airtightness film – is used for hard-to-reach areas. This has been applied above the soffit prior to insulating, the wall to ceiling junction on the gable ends, and the flooring to boundary joist connection to make this more robust.
Please contact Proclima to find out more about these reliable quality products.
Frequently asked questions
What was the airtightness layer/goop used at the junctions?
Airtightness goop is pro clima’s AEROSANA VISCONN. Application either compressed air spray (AEROFIX gun), airless sprayer, or brush on.
Can you expand a bit more on how you have achieved the airtightness under the floor?
The floor itself is strand board/particle board and is in itself airtight, the connection to the ADHERO peel and stick layer is made by wrapping the ADHERO around the bottom of the perimeter joist, taping it off, and then AEROSANA VISCONN was used to spray connect the perimeter joist to the floor sheets. There is little doubt we will find some leakage through the floor where sheets are butting into each other. Find them, fix them to meet our airtightness target.




