Insulation Calculator

Calculate - Ceiling and/or Underfloor insulation

If you’re unsure as to how much wall or ceiling insulation you need for your project, the traditional insulation calculator method will help you to work out your house size.

Insulation Calculator – how much ceiling insulation do I need?

What you need:

  • Tape measure
  • Pen & paper
  • Calculator

Calculating the size of your house

  1. Measure the outside walls of the house.
  2. Sketch and mark the measurements on the paper as you go.
  3. Measure all the entrance ways and areas not to be insulated.
  4. Once completed, divide the different sections into blocks use a calculator to multiply the different lengths of each of the boxes to find the square meter size of all the boxes.
  5. Add all the boxes together. This is the size of your house.
  6. Measure the distance between the joists as to know which width of insulation to order

Tips

  • For insulating between the joists you will need approximately 90% of the house area.
  • For foil type insulation you will need approximately 110% of the house size to allow for overlaps.
  • For insulation blankets that will cover the joists you will need 100% of the house size

 

Calculate - Wall insulation

Home Insulation Calculator – how much wall insulation do I need?

What you need:

  • Calculator
  • Tape measure
  • Pen & paper

How to work out square meters of your house

  1. Measure the external walls of the building
  2. Sketch and mark the measurements on the paper as you go.
  3. Measure the height between the floor and ceiling.
  4. Once completed, add the wall lengths up and multiply this by the height.
  5. Measure the windows and doors from inside and make a list of the areas.
  6. Subtract the total of the windows and doors from the total wall area. This is your to be insulated wall area.
  7. Measure the distance between the wall studs as to know which width of insulation to order.

Tips

  • For insulating between the studs you will need approximately 90% of the to be insulated wall area.
  • For foil type insulation you will need approximately 110% of the to be insulated wall area.
  • The amount of insulation you need should be the same regardless of whether it’s a retrofit wall insulation job or a new build.

 

Small Retrofit DIY Ceiling Installs – Is it a one-man job?

While it’s fully possible for one person to install insulation, before you take the plunge and go it alone, there are a couple of important factors to consider. Check the size of the manhole and compare with the insulation bag (unopened). If there is barely room to push the unopened bag through and into the ceiling, then you have three possible options:

  1. Get someone to help you. This is by far the best option, and will make the whole job a lot easier.
  2. Split open the bag, and load the pieces manually up into the ceiling – this is very time consuming, and not recommended.
  3. Load the insulation bags through the roof. This will only work where the roof is tiled, and it comes with its own challenges, not least you will need to secure yourself against the risk of falls. This method also depends on fine weather.

Installing insulation in existing roof spaces is tough work, and wherever possible we would recommend you to tackle it together with another person.

Insulation Cost Calculator

Once you’re ready to order insulation, navigate to Prcewise Insulation’s home page and select the product you need. There is a convenient insulation cost calculator under most products, which works out for you based on how many square meters you enter, how many bags you will need.

Submit your review
1
2
3
4
5
Submit
     
Cancel

Create your own review

Average rating:  
 0 reviews