Internal airtightness and vapour control
SmartVap goes on the warm side of the insulation. Its vapour resistance varies from 0.2 to 20 MNs/g with conditions, so the frame can still dry out. Laps and penetrations are taped to keep it airtight.
What goes into it
Choose how many of each to add to your basket, or work out quantities from your areas.
| Product | What it does | List price + GSTincl. GST | Per 100 m² | Quantity |
|---|---|---|---|---|
| ProctorPassive SmartVap1500mm x 30m (45 m²) | Variable vapour control layer on the warm side | $348.28$302.85$7.74$6.73/m² | 3 rolls | |
| ProctorPassive HighTack PLUS Tape60mm x 20m | Taping laps and penetrations | $74.00$64.35$3.70$3.22/m | By the metre | |
| ProctorPassive YouByute Flexi Tape80mm x 10m | Sealing complex junctions | $112.41$97.75$11.24$9.77/m | By the metre |
Per 100 m² uses each roll's coverage after laps where the manufacturer publishes it. Tapes depend on your openings, laps and penetrations; the estimator works these out from your numbers.
Other systems
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Airtight wall system Wraptite-SA wall wrap with tapes for openings, laps and junctions View system -
Roof underlay and ventilation Underlays for pitched roofs, with a drainage mat under metal roofing View system -
Windows and doors Flashing tapes to seal openings into the air barrier View system -
Open-joint rainscreen UV-stable membranes for cladding with open joints View system -
Wool insulation NZ wool batts for ceilings, walls and floors View system