We all know that insulation is a key requirement for a warm home.
Ceiling insulation – The insulation should be at least as high as the ceiling joists (about 120mm thick). Ensure the entire area is covered; there may be exposed patches around ducts or vents, or as a result of tradies moving the insulation and not reinstating it. Also make sure the insulation isn’t squashed – e.g. from storage – and that it sits neatly between the joists.
Underfloor insulation – This is much easier to check. If you can see bare floorboards between the joists, then there’s no insulation. If you have a foil based product – which covers the joists – then make sure it’s properly fitted, in good condition, and completely covers the area.