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Demilec Heatlok XT-s

Making the Demilec name synonymous with superior-quality spray foam insulation, Demilec Heatlok XT-s won't be beaten as a performance material that both insulates and air seals for the ...

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Demilec Sealection 800 Agribalance

Revolutionizing medium density insulating spray foam and air barrier materials, Sealection 800 is an ideal choice for those who want a more eco-friendly option for their residential ...

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  • Premium Grade Wall, Ceiling and Underfloor Insulation for new homes in New Zealand




What is polyurethane foam insulation?

A semi rigid closed cell polyurethane foam plastic with exceptional thermal insulation properties


What are the advantages of polyurethane foam?

Higher R-Value (thermal insulation) than other available insulations

Complete air and moisture barrier, allowing complete control over the interior of the home

Expands onto and adheres to every surface creating a complete thermal seal

Will not shrink, sag or hold and moisture



How long does it last?

Polyurethane foam insulation, due to its non sagging, water phobic and adhesive qualities it will perform at to optimal levels for the foreseeable life of the building 


What’s the R-Value like compared to other insulation products?

Not only does polyurethane foam insulation have a much greater R-Value (over 80% per given thickness), due to the air barrier effect created by polyurethane foam insulation, there is a much greater heat saving as R-Value doesn't take into account heat loss through convection or air movement through the exterior surfaces which account for up to 30% of total heat loss



How long does it take to install?

The installation of polyurethane foam insulation, depending on the size of the building and the areas of the home being insulated can take as little as 1 day to insulate


Does polyurethane foam sag or shrink?

Polyurethane foam insulation due to its chemically inert nature upon curing will show very little sign of shrinkage and due to its adhesive nature will not sag over the lifetime of the building


How environmentally sound is polyurethane foam insulation?

Due to the recycled component found in most polyurethane foams and the base of the product typically made from soy or castor oil and due to not needing to top up the insulation in years to come, polyurethane is well known to be environmentally and ecologically very friendly



Does Polyurethane foam out gas any harmful chemicals?

When applied correctly, upon curing, this typically taking around 24 hours, polyurethane foam insulation becomes chemically inert and will not outgas any harmful chemicals including formaldehyde


Is there any formaldehyde in polyurethane foam insulation?



Can polyurethane control condensation?

Due to polyurethane's ability to create a full air and moisture barrier, air will not convect through the insulated walls, therefore greatly reducing the shedding of moisture as condensation


Will polyurethane foam insulation support bacterial or fungal growth?

Mould, mildew and fungal growth is normally found in areas high in condensation, typically where air is allowed to pass through walls and ceilings normally found when using most traditional insulation products. Due to polyurethane’s air and moisture barrier properties, condensation becomes a problem of the past 


When should polyurethane foam insulation be installed?

The best time to install polyurethane foam insulation is after the wiring and plumbing has been installed, before the internal cladding has been installed


What R-Value do you recommend?

As polyurethane foam can achieve very high R-Values in minimal cavity depths we can achieve much higher values than are achievable by most insulation products. Depending on the temperature variations reached in the area being built will depend on the R-Value recommended. Basically the better the insulation the better the savings and the more comfortable your family will be


What makes it better than traditional insulation products?

Not only does polyurethane foam insulation have the highest R-Value on the market (4.3 at 90mm) due to the air and moisture barriers we can eliminate air convection through the areas insulated by our company. This in combination with the ability for polyurethane foam insulation to perform till the life of the building makes our products one of a kind


How long has it been on the market?

Polyurethane foam insulation was invented in 1953 by NASA to insulate from the harsh temperatures found in space. The product was shortly after introduced into homes and buildings as a superior type of insulation


Is it proven?

Polyurethane foam has been used extensively around the world in the building industry for more than 50 year as an insulation product. In that time it has proven to surpass most expectations with very little issues reported in that time


Is there an odour?

Polyurethane foam upon curing, normally 24 hours, will not outgas any odours due to its chemical inertness 











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