Compared to insulating a new build home, opportunities to insulate your existing home are limited. However, any increased insulation will benefit you and improve the quality of life inside your home, by protecting your home against the heat, cold and damp.
In New Zealand homes with poor or no insulation, heating accounts for around one-third of the energy used. Insulation is the single most effective measure you can take to keep your home warm and save energy.
With good wall insulation ventilation is important as the air-tight nature inhibits natural air flow.