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Underfloor insulation

Underfloor insulation is one of the first things to consider in most existing houses to make them warmer, healthier and more comfortable - and in homes with accessible underfloor spaces, it's relatively cheap and easy to do.

Do you qualify for funding?

Warm Up New Zealand: Healthy Homes offers free ceiling and underfloor insulation for low-income households in many parts of the country. You may qualify if:

  • your home was built before the year 2000, and
  • the home owner or main tenant has a Community Services Card, and
  • you have children under 17 years, adults over 65 years or someone with high health needs living in your home, or
  • you are a landlord with eligible tenants.

To find out if you qualify, contact an insulation service provider in your area.

Check your insulation

If you can access your underfloor area have a look to see if you have got any insulation.

If there is no insulation under your floor, either between or stapled to the underside of the joists, then you need to get some.

You may have to either repair the existing insulation, or remove the old insulation and replace it with new insulation if it:

  • is loose, or doesn't sit hard against the underside of the floor boards
  • doesn't extend under all of the floor
  • has gaps in it, or bits missing
  • is foil and has taped seams that have come undone
  • has been damaged

View our video on how to check your underfloor insulation.

If you can't check your own insulation, or aren't sure if you need any, get a professional to come and have a look for you. It's free and if you do need some insulation installed, they can tell you if you qualify for funding.

What sort of insulation?

If you have a preference, you could choose from the different materials insulation is made from i.e. wool, polyester,  fibreglass etc. but you may have to shop around to find a provider that uses the type you want.

If you don't have any specific preferences, then your decision might be more price driven. If so, get a quote from 2 or more providers if you can and compare them.

EECA recommends using bulk insulation and strongly advises against the use of foil insulation as there are serious concerns regarding the safety and performance of foil insulation. You can download a list of specific insulation products accepted for use under the Warm Up New Zealand: Heat Smart programme.

More information:

If you are considering installing your own insulation, or just want to know more, have a look at the more information about underfloor insulation page.

Related videos:

Link to video on checking your underfloor insulation. How to check your underfloor insulation

Find out how to check the underfloor insulation in your house.

View this video now »