Modularised OSM Wall Panels℗ are the foundation for the building system and complies with New Zealand standard (NZS3604). NZ PATENT NUMBER: 766967.
Produced in a dry, controlled factory environment by licensed Frame & Truss plants nationwide. The OSM Wall Panels℗ are manufactured cost efficiently in production runs and are supplied as a standard stock item.
More or less all of the details and fixings, including bracing, is standard NZS3604 & E2/AS1 which the builder on-site will be well familiar with. The only difference is really that the “pre-nailed” framing is coming in smaller segments and with cladding on, all the rest is traditional site-work.
The standard cladding is Radiata Pine Vertical Shiplap Solid H3.1 Primed, with a net cover of 150mm, so the 1,200mm wide wall panels are supplied with 7 @ weatherboards factory fitted and the last (8th) weatherboard is fitted on-site after the vertical Rigid Air Barrier (RAB) join has been taped.
As the cladding is factory fitted, there is very little labour required on-site to tape and fit the last (8th) weatherboard, compared to supplying pre-nailed framing and then fitting RAB, cavity battens, cavity closers and all weatherboards on-site.
Quick installation of wall panels on-site by two builders, no need for a crane.
Significant savings in co-ordination on site as the entire envelope, including roof can quickly be installed and make the building weatherproof in 3-4 days, compared to 1-2 months for conventional build on-site, the latter by first installing pre-nailed framing and trusses (exposed to weather), then RAB, then cavity battens, then cladding, then roof.
Economy of scale and standardisation in combination with OSM Wall Panels℗ can reduce the construction cost with up to 20% compared to conventional build.
External walls from outside to inside:
- Vertical Radiata Pine Weatherboard 18.5mm, H3.1, Primed and two top coats of acrylic paint
- 45mm cavity, Structural Cavity Battens, no nogs
- 8mm Rigid Air Barrier (RAB)
- 45 x 140mm studs, 600mm ctrs
- 140mm Earthwool (R-value 4.1)
- Intello air barrier membrane to inside face of framing
- 45mm service cavity
- 50mm Earthwool (R-value 1.4)
- 10mm GIB lining
- Total Insulation R-value 5.5