The advantages of Polyurethane spray foam insulation


Company: NZ Foam

The demand for better methods of insulation in New Zealand is putting a great deal of pressure on existing insulation products. With this in mind, we decided it was time to create NZ Foam Ltd with the intention to play catch up with the rest of the world and introduce polyurethane spray insulation to the residential market.

Polyurethane foam as an insulation has been used extensively around the world for over 60 years and is well known as a superior product over more traditional insulation products. There are many positive attributes to our products, including no sagging, will bond to most surfaces, completely neutral, no out gassing of any harmful chemicals, no formaldehyde used in the formulation, will not degrade electrical wiring or plumbing, has a high level fire rating and due to its gap filling properties urethane foam will give a true and constant thermal R-Value throughout the life of the building.

Not only does Polyurethane foam insulation have a greater R-Value, our products create a full air and moisture barrier, alleviating the loss of heat through convection of air and pressure movement through the walls, which can account for up to 30% of heat loss. As convection is not calculated in the R-Value equation, the true thermal properties of Polyurethane foam insulation are not always understood and appreciated.

Environmentally, polyurethane foam is seen as a friendly product, due to the recycled plastic component and the use of castor oil as its base component. Castor oil is not considered a human food source, can be grown on arid, non irrigated land and is harvested annually therefore self sustainable. As polyurethane does not require further topping up over the life time of the building, this all combines to having a very small carbon footprint.

Our aim at NZ Foam Limited is to further the awareness and education to builders, architects and home owners alike; of the warmth and comfort that we can offer, free of the usual draughts, condensation, mould and allergens normally associated with homes using traditional insulation techniques. Alleviating these issues will help minimise many of our modern day illnesses, including asthma and bronchitis.

The bottom line is – we help create a ‘warmer, dryer, healthier more comfortable cosy home’.

Call 0800 NZ FOAM or visit for more information today.



  1. The benefits of a full air and moisture barrier through spray insulation are great reasons to consider this for your home. These positive effects aren’t always considered when home owners are trying to decide with to spray insulate or use another method. Thanks for reminding me why this material is a great choice to protect my home.


  2. I’m so excited that people that haven’t used foam before will now have access to it. I’m especially glad to know about the benefits of it versus traditional insulation methods. Just thinking about a home that is free of harmful asthma-causing substances makes me feel at ease.


  3. My husband and I are finishing building our new house, and we are just adding the finishing touches. Our contractor suggested that we might want to look into having insulated with foam, and I was curious what were the benefits of doing this. It’s good to know that when it comes to this method it will create a air and moisture barrier, which will help the heat in during the winter. This article gives great insight, thanks!


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