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This does depend on your home and what insulation it currently has. If you have no or poor insulation, choose the right product and install it correctly, it will have a huge impact on you home (most people are really surprised!).

If your house is cold and/or damp, and your heating bill is high, good insulation will help retain the heat for longer which in-turn will reduce your power consumption!

A well insulated home has proven health, social and financial benefits. 

Our business is built largely on reputation and referrals.  If we do a bad job we wont get repeat business.

Installing insulation is a tough job and we have a team of employees, not contractors, who work for us and get the job done.  We also have an internal audit programme where we check a number of the jobs we do each week to ensure they are up to standard.  

All work is done to NZS4246 which is the standard for retrofitting insulation in NZ.

Lastly we make the point that we want you to be happy with our work before you need to pay us anything.  If there is anything that you are not happy with, we will do everything we can to rectify it so you can pay your account happy with our service.

The cost will depend on exactly what needs to be done and what product you choose.

As a starting point, to have ceiling product supplied and installed prices start from $22 per square meter including GST.  Under floor product starts from $20 per square meter.  We offer a discount off this pricing depending on the job size and condition.  Our trained assessors are able to offer this to you at the time that they complete an on site assessment and quote.

Additional services such as insulation removal, vacuum removal, borer treatment and vapour barrier are all additional and we would quote them if requested or if we identify that the property requires it.

This depends on a number of factors including:

  1. Location and local climate
  2. The age of your house
  3. Your budget

At The Insulation Warehouse we only use New Zealand manufactured product, so it's always going to be made for NZ conditions.

We carry one of the widest ranges of product in stock in our Penrose Warehouse and we are always happy to talk to you about the best solution for your needs.  

Options range from Glass Wool, and Polyester to Wool Blends and Polystyrene.  While we have most options available we don't think all are equal.  Feel free to call us to find out why. 

Our customer service team is available on 09 6368409

All of the product that we sell and install are backed by local manufacturer warranties of 50* years or more.

If you choose us to install insulation at your property our workmanship has a 12 month warranty.

* Borer Basher is a permanent treatment for borer but it does not have a warranty.  The reason for this is because the conditions that it is applied in can vary significantly including dust buildup on timber.

To find more frequently asked questions about the products, please visit the Our Brands page.

Building regulations require insulation to be kept clear of lighting and electrical components.

There has been a lot of publicity around down lights and insulation, with a move towards LED down lights so insulation can be laid over the top of them.

If you have any down light other than LED the bottom line is that if they are covered with insulation they are a fire risk. All non LED downlights need a minimum of 100mm clearance between the outside of the light and the insulation to keep them safe. Yes this does compromise the insulation but it’s better than burning your home down!

If you are looking at LED down light make sure you are getting a product that is CA or IC approved and that the manufacturer specifies that they can have insulation laid over the top of them. In most cases the LED driver needs to be placed on top of the insulation which can be done without any open holes.

Building regulations require insulation to be left clear from where pipes pass through the floor. Typically this is a minimum clearance of 100mm.

Insulation can be installed under or over pipe systems that are running through the underfloor or ceiling of a house. 

At The Insulation Warehouse we have teams of experienced installers. They are able to complete most jobs within a day. For every 100 square meters of ceiling or underfloor insulation we would take approx 3 to 4 hours to complete.

A drop down is a vertical surface between your living space and the roof attic area. Often they are the top section of a wardrobe or where there are two different levels of ceilings.

It is important to insulate the drop down to ensure the ceiling insulation system is complete. If the drop down is not insulated it will let the warm air from inside the living space through into the attic area and out through the roof, ultimately compromising the insulation system.

When installing insulation to a drop down there are a number of options depending on the product being used.

Glass wool product such as Pink Batts can be fitted in between the timber framing and will generally stay in place so long as it is fitted snuggly. If the product is wider than 300mm it is recommended to put plastic strapping across to hold the insulation in place.

Mould inside your house – Insulation alone will not eliminate mould inside your house as mould can be caused by a number of things including rising damp and internal moisture inside your home. If you have moisture inside your home you may also need to consider an air treatment system.

Mould under your house – If you have rising damp, which is caused by dampness in the ground under the house, you can use Damp Guard, our 250 micron PVC ground vapour barrier, in addition to other underfloor insulation.

Ceiling – The Insulation Warehouse has product options that allow insulation to be installed into ceiling where other product cannot be used. The glass wool blow in product, rated at R3.0, is a good option when nothing else will work.

A good guide is a working room of one meter at the apex of the roof as a minimum.

Underfloor – 400mm below the bottom of the joist is a minimum clearance guide for installing under a house.