Information for architects, designers, and engineers

Supporting leading-edge architectural design

We deliver an innovative alternative to traditional building systems that exceeds NZ’s building code and requirements and supports modern building design.

We streamline the building process by providing the complete build envelope.

Floor, wall, and roof cassettes are manufactured in our factory, shipped to you, and then craned into place – prepped for the final coat of stopping and ready for battens or plaster application. Most selectSIP homes can be weather-tight in as little as one day thanks to our advanced water-stable sheathing with E2 waterproofing at the panel.


Our envelope system is structurally stronger and offers more flexiblity in design application than traditional truss and frame structures.

  • Construction can be on a concrete slab or on piles.

  • Pre-cut electrical and plumbing chases and voids are provided as required.

  • Panels include tanking and window/door openings ready for installation in the factory, or on-site.

  • Build taller and thicker architectural walls with ease.

  • Build an insulated flat or skillion ceiling.

  • Cathedral ceilings, extra loft areas, and soaring ceilings are easy to incorporate into designs.

  • Hold a span of up to 7.2 meters without the need for additional engineering.

  • Reduce project-specific engineering requirements with our full, tested engineered design tables.

  • Panels arrive on-site in a pre-planned order, enabling efficient installation.

Corner and floor-to-roof windows, double cantilever roofs, triangle-shaped walls, and geodesic domes are just a few examples of the unique, non-linear design possibilities that can be harnessed with our selectSIP envelope system.

World-class SIP developers and CodeMark Accreditation

We are backed by more than 20 years of experience of SIP development.

With CodeMark accreditation for the building envelope system, you can be sure you are working with a proven, tested, and accredited system and product.

selectSIP uses 5th generation scientifically formulated sheathing 15 years in the making and 20 years of building envelope development to set a new standard for quality and performance in the building industry.

We redefine the standard for SIP panels using a revolutionary material made of Magnesium Oxide (MgSO4) in a scientifically formulated cement mixture to create the most advanced, International Code Council Certified Magnesium Fibre cement sheathing in the world.

Our panels are constructed from safe, durable materials with high seismic integrity. They offer superior performance to wood or steel-clad SIPs across the entire structural and building envelope criteria.

These materials help create a very high R-value (thermal resistance rating), meaning energy retention of our panels is exceptional. When coupled with the building science behind the unique selectSIP envelope system, our homes are exceptionally warm, dry and energy-efficient.

Our panels are:

  • Water-stable – Will not degrade when exposed to water. Our unique panel chemistry means panel strength increases over time with the wet/dry process.

  • Ductile and Seismic Safe – Our panels are proven, time and time again to withstand high levels of tensile stress before deformation and failure.

  • Non-combustible – Our product exceeds all fire testing requirements, causing no smoke or flame spread as it will not burn.

  • Non-nutrient – Made from non-nutrient materials, our sheathing will not support the growth of mould – a major cause of illness.

  • Free of chlorides – Unlike other boards, ours contain no chlorides. The sulphate used in our sheathing makes it benign.

  • Free of Volatile Organic Compounds (VOC) – selectSIPs are free of the harmful VOCs found in many building products used today. Find out more here.

Your CodeMark Assurance

Our advanced science redefines quality and performance in the building industry by exceeding New Zealand building code requirements.

selectSIP’s advanced engineering means our product exceeds New Zealand building standards.

By exceeding the New Zealand building code requirements, our products minimise the need for additional engineering. Every panel provides bracing and impact resistance superior to most other products on the market.

Homes built using our system achieve a minimum 6 Homestar rating - a NZ measure of health, efficiency, and sustainability.

Most new home builds, built to code, achieve a 2- 3 Homestar rating.

We believe in healthy homes built to the highest possible environmental standards, for everyone. Homes built well above the standard new home Homestar rating of 2- 3.

Our proven envelope system creates consistent, controllable, airtight interior conditions, outperforming leading insulation options and building methods to create an energy-efficient home.

Our panels are non-nutrient based, meaning they do not support the growth of mould. They are also proven to support designs that withstand cyclone conditions and seismic events.

The entire panel surface is structural and load-bearing and has been strength tested to hold a span of up to 7.2 metres – giving more flexibility for design opportunities.

The product’s advanced building science exceeds New Zealand’s building standards, ensuring superior performance across all structural and building envelope criteria.

With our product you can:

  • Build for extra high wind loads, without additional engineering costs.

    The advanced engineering of selectSIP panels allows for longer spans and wind loads to “extra high”, and is proven to support specific design for cyclone conditions.

  • Make the most of large span product capabilities

    Additional engineering is not needed for many projects as selectSIP panels have been strength-tested and can hold a span of up to 7.2 metres. The advanced span performance comes from the unique box spline and the use of a pressed steel internal components.

  • Build ductile, durable and remarkably strong buildings

    Our panels are constructed with safe, durable materials offering high seismic performance. They are superior to wood or steel-clad SIPs across the entire spectrum of structural and building envelope criteria. The seismic design capabilities of our panels has been developed in New Zealand through extensive R&D using regional engineers and third-party test laboratories to address ductility, durability, and strength.

We help you maintain competitive pricing while offering a superior product

Our pricing can compete with traditional timber frame construction.  

When compared to NZ accredited OSB SIP products on the market, MgSO4 boards offer better cost and time efficiencies as they require fewer finishing layers and are faster to install.

When it comes to house building, time is money, so speed and ease of construction can have a direct correlation to cost.

With selectSIP, reduced construction times equals less exposure to weather and faster build to lock-up. This results in fewer financing drawdowns and reduced carrying costs, all adding up cheaper construction costs.


Better Living

Select a home with lower energy bills using an incredibly climate-resilient product.


Advanced Engineering

Select a strong, affordable, healthy home built to the extremely high environmental standards.


Peace of Mind

Select superior performance panels with solid components and durability, that is also a sustainable building system that is better for the planet.


A Better Building Process

Select to do more. More value, more quality and more homes for New Zealanders.


Design Flexibility

Select an accredited, proven, and tested system that supports leading-edge architectural design.


Better for the planet

Select a system with a lower carbon footprint and proven sustainability.


Select better for the planet

Select a system with a lower carbon footprint and proven sustainability.


Large-Scale Capability

Select high-volume fast construction with the most efficient delivery model available.


Cost Efficiency

Select a cost-effective in-factory manufacturing system for efficient production, reduced construction times, fewer weather delays, and shorter drying times.

We’d love to hear from you

Quality Customer Support is assured by selectSIP. We are here to answer any questions you have at any time in the process.

You will be looked after every step of the way through to code compliance and beyond.