Design and build LINKS.

  • Formance Structural insulated panels – (SIPs)    

    Structural Insulated Panels (SIPs) are a widely used alternative construction material for homes and other buildings, with a proven record for over 40 years in the US, Europe and the UK. Formance are an engineered panel that provides structural framing, insulation, and exterior sheathing in a solid, one-piece component. Formance™ panels are not only true to the well known and proven SIPs design, they also have Codemark certiifcation which ensures compliance with the NZ Building Code and gives peace of mind that Formance™ panels will meet the standards and deliver a high performance building.

  • Maxraft Insulated Floors

    MAXRaft slabs combine strength with durability.  The slab encases the perimeter and puts a continuous layer of MAXRaft between the ground and concrete, unlike traditional waffle slabs.  This insulation has a dramatic effect on the surface temperature, significantly increasing the comfort of the home and the health of the family, all the while lowering the cost of heating.In the past NZers have concentrated on insulating ceilings and walls, however up to a third of a building’s heat can be lost through an uninsulated floor.  Up to 80% of heat loss can be through the external edges of the foundation.  It has been proven in most other developed  countries that a completely insulated foundation offers the best form of heat retention.

  • NK Windows and doors UPVC Joiner

Warmer internal window frame and glass surface temperatures mean condensation is much less likely to form. Given good ventilation practices and smart glazing choices, condensation will not form on uPVC windows. This in turn eliminates the opportunity for mould to grow and release dangerous spores. uPVC provides a healthier and safer home.

What you need to know about Moisture Control in the building envelope

Moisture is the enemy of durability so having an effective moisture control system is essential for a long lasting home. Dr Joe Lstiburek, Building Science guru, states that 80% of construction problems are related to water.

Contrary to traditional wisdom in the NZ construction industry today, a rigid air barrier on the outside of the external frame is not a good idea from a moisture control perspective.  In most areas of NZ at most times of year, the inside of the home is warmer than the outside; this generates a gentle positive pressure from the inside of the building to the outside. If the inside is not airtight, any moisture in the air is carried through the wall assembly towards the outside. When it arrives at the outside of the building and meets the cold surfaces it can condense and cause durability issues. That is if the outside is also sealed. Most rigid air-barriers are required to be sealed – we call them a sweat jacket. In a nutshell this is the issue that councils are facing in the colder South Island – durability issues from poor control of internal moisture.

The solution is two fold and beautifully dealt with by Formance panels.

  1. We ensure the inside of the panels is sealed – we do this with tape (if the walls are to have an additional lining) or silicone (if the walls are to be the finished surface).

  2. Ensure the outside of the panels are not sealed – so no taping or self-adhesive wraps on the outside to seal moisture in.

This means that the building will last forever – internal moisture is prevented from entering the structure and external moisture that beats the weather-tight system (cladding) will be allowed to escape through the unsealed external. This includes any moisture picked up during construction.