Ceiling insulation plays a very important role when considering the best options for insulating a home or commercial building. With estimates of up to 60% of heat loss / heat gain happening through the ceiling space it is easy to understand why.
What is ceiling insulation?
It generally refers to an insulating product that is placed between or across ceiling joists within the roof cavity.
Insulation products that are installed underneath the roof tin or tiles are referred to as roof insulation and have a different role to play in the total insulation of a building.
The most common and effective ceiling insulation types are:
Glasswool Ceiling Batts – A bulk insulation batt made from recycled glass and other raw materials, designed to fit neatly between roof joists. Highly performance for low cost. Most popular brands are Knauf Earthwool Batts, Fletcher Pink Batts & Bradford Gold Batts.
Polyester Ceiling Batts – A bulk insulation batt made from recycled plastic designed to fit neatly between roof joists. Softer, less itchy, longer lasting, moisture resistant, non respirable. Most popular brands are Higgins, Autex and Poly Batts
Real Wool Ceiling Batts – A bulk insulation batt made from REAL sheeps wool designed to fit neatly between roof joists. Soft, non itchy, safe, environmentally friendly, recyclable and highly effective. Most popular brand is Higgins Insulation.
Loose fill cellulose fibre – A bulk insulation product made from mashed up newspapers and other cellulose fibres. Rather than being formed into a batt, the fibres are blown randomly into the ceiling cavity to fill the spaces between the joists. Cheap to produce, recycles waste paper.
There are also some foil insulation products that are sold as insulation, like concertina batts and triple foil batts. In Insulation Easy, we believe these are dangerous to install as ceiling insulation and suggest they are more suitable for consideration as roof insulation. However, their superiority over regular roof sarking is unknown.
Which type is the best?
The best type of insulation for you is dependent on the project you have and your own personal preferences and objectives. To get a better understanding of the benefits of each type visit our insulation types information.
But no matter what type of insulation you choose, with up to 60% of heat transfer taking place through the ceiling, the objective should be to maximise your insulation in this area.
All thermal insulation sold in Australia must have an R- Value, which is an evaluation of it’s thermal insulating effectiveness, stated on the packaging. The higher the R-Value, the more effective the product will be at insulating.
In regards to insulation, the Building Code of Australia divides the country into 8 climate zones and sets out a recommendation for what level of R-Value insulation you should use, depending on the climate zone you live in.
Many people are now choosing to insulate their homes and offices at higher levels than this recommendation, to future proof their investments.