Calculate your under timber floor insulation
It’s critical that you measure your underfloor insulation requirements correctly. If you’re a DIYer and you’ve set aside your weekend to complete the project, you don’t want to run out just before you finish. Equally, you don’t want to have loads left over because it’s wasteful and will cost you money.
Our handy insulation calculator will give you a close estimate of your requirements.
A reminder that our Expol Black R1.8 is currently only sold in Victoria and South Australia. It is shown in the calculator below as ‘410mm R1.8 – Black Pack’.
Use the Expol calculator for insulation
Follow our step-by-step instructions to learn how to calculate the amount of insulation needed to measure the amount of underfloor insulation you will need for your DIY underfloor insulation project.
What you’ll need:
- Retractable tape measure
- Pen & paper or electronic device
- Calculator or phone app
How to calculate the size of your house:
- Measure the outside walls of your home or the interior sizes of
each room. - Record the measurements as you go.
- Measure any areas that are not to be insulated.
- Calculate the square metres by multiplying the length and breadth of each area.
- Add all the room sizes together. Because you’re insulated between the joists, you can now decrease the total by about 10 per cent to find the total square metres to enter.
The other measurement you’ll need before using the insulation calculator is the distance between your floor joists to know which width of Expol insulation to order.
Enter the measurements and insulation width in the insulation pack calculator below to ascertain how many packs you’ll need. Then, enter the number of packs required in the cost estimation calculator.
Any leftovers of either Expol White or Expol Black are 100% recyclable and can be dropped in a StyroCycle bin.
Underfloor Pack Calculator
Area to be insulated
Number of Packs Required - choose width
Cost Estimation Calculator
Don’t forget the accessories!
– EXPOL L bracket insulation panel fixings
– EXPOL wireguard insulation roll
– EXPOL joist saddles – for NEW home builds
*Costs are estimates only and prices may vary slightly depending on the retailer
