More on Metrapanel... 

What is Metrapanel made from?

  • Metrapanel is a product produced by LaminexNZ where the panel is made from compressed wood fibre derived from plantation pine, and heat compressed with an exclusively formulated resin. Our re-manufacturing plant then converts the raw board to preprimed Metrapanel after applying two coats of specially formulated Resene sealant. The panel is manufactured in accordance with the standard.

What is the structural performance of Metrapanel?

  • If designed, used, installed and maintained in accordance with the scope and limitations of the BRANZ Appraisal, the Metrapanel wall and ceiling panels, and connections will meet the New Zealand Building Code (NZBC) Clause B1 Structure – Performance B1.3.1, B1.3.2 and B1.3.4. The Metrapanel System meets the requirements for loads arising from self-weight, imposed gravity loads, earthquake, snow and wind (i.e. B1.3.3(a), (b), (f), (g) and (h).
  • The ground floor construction platform must comprise of a concrete slab on ground constructed in accordance with NZS3604, or a suspended timber framed floor supported on a concrete wall or piled foundation, and the first floor load must not exceed 1.5kPa.
  • Roof pitches must be greater than 5 degrees but not exceed 30 degrees.

What height can you build up to with Metrapanel?

  • The Metrapanel system can be used for a 2.7m stud height and as per the Metrapanel Construction Manual a wall height of 3m can be accommodated.

How durable is Metrapanel? 

  • Metrapanel is classed as a medium density product at 650kg/m3, making it robust and highly resistant to impacts associated with every day wear and tear, particularly for student accommodation, rental properties, retirement villages, warehouses, and hospitals.
  • Transportable houses prove the superior qualities of the Metrapanel system by remaining rigid during transportation and only requiring minor touch ups once delivered to site.
  • If designed, used, installed and maintained in accordance with the scope and limitiations of the BRANZ Appraisal, the Metrapanel wall and ceiling panels, and connections will meet the New Zealand Building Code (NZBC) Clause B2 Durability – Performance B2.3.1 (a) 50 years.

How does Metrapanel stand up to moisture? 

  • Metrapanel is moisture resistant and all cut or exposed edges are treated with a specially formulated paint to give it all round protection from water ingress. Metrapanel has been certified to cope with 28 days exposure before covering, but obviously the sooner it is protected the better.
  • As per the BRANZ Appraisal, Metrapanel can be used for wet areas such as ‘Water Splash’ and ‘Shower Areas’ but must be waterproofed. This can be achieved using proprietary rigid shower lining systems, flexible vinyl shower wall finish or tiling. Tiling shower areas must include a wet area waterproofing membrane system under the tiles. The incorporation of vented windows and other forms of permanent ventilation are recommended in all rooms to ensure adequate air circulation and to prevent the build-up of moisture levels. Walls and ceilings in wet areas that are outside the ‘Water Splash’ and ‘Shower Areas’ may be finished with a protective paint system.
  • The use of Metrapanel wall and ceiling panels has not been assessed for rooms exposed to sustained high humidity’s (greater than 85% RH) such as a sauna, or areas where the temperatures are in excess of 35 degrees for prolonged periods such as ceiling heating installations, or in excess of 50 degrees in localised areas (e.g. adjacent to a fuel burning appliance)

What do I do if I get a water leak?

  • As a general guideline, repair the water leak, allow the panel to dry thoroughly and shrink back to size, and finish as per Metrapanel finishing guide. For major damage you may need to cut out the area and replace it with a new piece of panel, plaster and repaint.

What is the ‘R’ rating on a Metrapanel home?        

  • By combining conventionally fitted joinery and exterior cladding (as per timber framed buildings) with Metrapanel, a thermal insulation rating of up to R6.0 can be achieved.

Does Metrapanel release toxins?

  • As per the BRANZ Appraisal 364, ‘Metrapanel wall, floor and ceiling panels will not present a health hazard to people’. Results of a formaldehyde monitoring investigation have been obtained and show that the air concentration of formaldehyde in a number of finished houses is acceptable being below the WHO guideline for ‘no concern’, which is 0.05ppm.
  • If designed, used, installed and maintained in accordance with the statements and conditions of the BRANZ Appraisal, the Metrapanel wall and ceiling panels, and connections will meet the New Zealand Building Code (NZBC) Clause F2 Hazardous Building Materials – Performance F2.3.1.

What cost advantages are there with using Metrapanel?

  • The Metrapanel product cost is comparative to traditional timber framing system. However, as a result of the 40-60% faster construction, considerable savings are made on labour and finance costs, and your quote isn’t padded to allow for bad weather days.
  • Due to the large 7.35x2.45 sheet size, less stopping and painting is required, and the durability benefits result in significant maintenance cost savings.

What is the width, length, thickness, weight of the panels?

  • 36mm wall panels 7350x2450, weighs 416kg
  • 25mm ceiling panels 7350x2450, weighs 288kg
  • 25mm flooring panels 7350x2450, weighs 288kg
  • 18mm wall panels 7350x2450, weighs 214kg

What is the largest size home that can be transported?

  • 8.5 metres wide by 23 metres long - 190sqm

Can Metrapanel ceilings be used as a ceiling diaphragm?

  • Providing the ceiling panels meet the requirements as set out in section 5.3 of the Metrapanel Design and Construction Manual, Metrapanel ceilings may be used as a ceiling diaphragm.

How do the sound ratings of Metrapanel compare to traditional construction?

  • Metrapanel walls can provide an STC rating from 28 to 61 depending on the composition of the wall (statement from Auckland University 2006).
  • For noisy areas such as music rooms, home theatres and media centres, Metrapanel has a system that can achieve a STC50 rating.
  • For Inter-tenancy walls between separate household units, Metrapanel has a system that can achieve a desired STC61 rating. The inter-tenancy walls are constructed to provide structural support and both fire and sound insulation between habitable spaces from one dwelling to another. This Inter-tenancy Wall Design and Construction also boasts a FRR 30/30/30 fire resistance rating.

What is the maximum snow loading for Metrapanel?

  • Snow loading shall not exceed 1.5kPa without a specific engineered design.

What is the maximum wind zone for Metrapanel?

  • Metrapanel buildings are limited to all Wind Zones up to and including Very High without specific engineered design.