E3 – Amendment 7 to Acceptable Solution E3/AS1 for Internal Moisture
Amendment 7 to the Acceptable Solution E3/AS1, for Clause E3 Internal Moisture of the New
Zealand Building Code came into force on 3 November 2021, with the previous Amendment 6
expiring on this date. Amendment 7 was effective from 5 November 2020, however, was subject to a one-year transition period.
One of the main changes is that Amendment 7 now includes the reclassification of dishwashers and washing machines as Sanitary Appliances and basins and sinks as Sanitary Fixtures. There is a requirement for ensuring flooring solutions which must now have a finish that is both impervious and easily cleaned extending at least 1.5 metres from all sanitary fixtures and appliances.
Independently Tested – Jacobsen Shaw Contract Concrete + Composed, Community LVT Flooring is an E3 Alternative Solution
Independently tested in New Zealand by SGS Industrial Certification Services, a 48-hour water
spill test showed that there was no noticeable change to the Jacobsen Shaw Contract Concrete
+ Composed, Community LVT Flooring and that there was no water penetration through to
the flooring substrate when installed using the following method:
- Substrate Flooring Membrane: If required, substrate to be protected by Uzin PE460 2-
Component Epoxy Blocking Primer to act as a barrier against moisture penetration.
- Jacobsen Shaw Contract Concrete + Composed, Community LVT adhered to the
substrate using Uzin KE68T 1-Component Hybrid Adhesive.
- All perimeter edges and penetrations to be sealed with a MS Silicone.
- A membrane is only required in a defined wet area such as a bathroom or shower
room, however, in a multilevel residential building this should be a consideration.
- In a kitchen/scullery area the Uzin KE68T Hybrid Adhesive provides a sufficient barrier
against moisture penetration to the substrate.
- If required a suitable levelling compound will be recommended by Jacobsen and Uzin.