Is your insulation still keeping your house warm?

Tips for insulating your house

A simple guide to making sure you home is as warm as it should be.

Insulating your home is the most effective thing you can do to keep your home comfortable and healthy, and to save energy and money. A well-insulated home provides year-round comfort; it is cooler in the summer and warmer in the winter. An insulated home is a drier, healthier home. Around 35% of the energy used in the average New Zealand household goes on heating your home. If your home doesn’t have adequate insulation, a lot of your energy spend is wasted as the heat escapes.

Heat always flows from its source to surrounding cooler areas; insulation is designed to slow this heat transfer. The relative efficiency with which it does this is called the R-Value, with ‘R’ representing insulation’s resistance to heat flow at a given thickness. The higher the R-Value, the higher performing the insulation is.

A fully-insulated house needs about half the heating of an uninsulated house. So, paying a bit more for insulation will save you money well into the future. By investing in insulation you are also reducing your overall environmental impact as your home requires less energy to heat or cool.

If your home was built after 1978 you will most likely have insulation in your home, but when was the last time you checked to make sure it was adequate and providing the warmth you actually require? Over time some types of insulation can break down due to moisture, and other factors. It is also likely that your insulation doesn’t stand up to the current standards for insulating your home.

How can you ensure your Insulation is keeping you warm?

There are two simple and easy locations in your home to upgrade and improve your insulation; those are the underfloor and ceiling. Follow these tips and instructions to simply assess your home:

Ceiling Insulation

If possible, get a step ladder, pop your head through the hatch into your roof space and have a look around. Is there insulation? If not – then you need to get some! If yes, let’s check to make sure it is up to standard.

You will need an insulation top up blanket if: …

  • Insulation is less than 120mm thick…
  • Insulation doesn’t cover whole ceiling …
  • Insulation has gaps in it, or places where it is squashed or tucked in

You will need to remove the old insulation and replace if: …

  • Insulation is wet or damp in areas …
  • Insulation is damaged by rodents or birds

Underfloor Insulation

If it is possible to access you’re underfloor, check for insulation. Insulation is either in between or stapled to the underside of the joists. If not – then you need to get some! If yes, check to make sure it is up to standard.

You will need to repair or replace your existing insulation if: …

  • Insulation is loose or doesn’t sit hard against the underside of the floorboards…
  • Insulation doesn’t extend under the entire floor
  • Insulation has gaps in it or bits missing …
  • Insulation is foil and has taped seems that have come undone
  • Insulation has been damaged

When choosing the new insulation for your home, there are plenty of options each of which have their own benefits, Polyester Insulation for example doesn’t deteriorate with moisture, is pest and vermin resistant, meaning the lifetime of the insulation will last the life time of your house where glass wool based insulation can slump and deteriorate quickly.

Although highly durable and easy to install Polyester insulation can be slightly more expensive to purchase, however you have the reassurance you have a product that will perform and keep you and your family warm for years to come.

GreenStuf insulation is your premium New Zealand made Polyester insulation that provides a high performing product that is guaranteed to last for at least 50 years. For more information regarding the insulation in your home we recommend reading our Residential Insulation Guide for New Homes or our Insulation for Existing Homes Guide.