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free insulation top-up R-value calculator




Insulation Calculator

Calculate Insulation To Add to Increase R-value


Entry Form

Enter Required R-value:

Enter Existing R-value:

Answer in Inches

Cellulose blown, loose fill:

Fiberglass boards:

Fiberglass blankets, and batts:

Fiberglass blown, loose fill:

Perlite, loose fill:

Polystyrene boards:

Rock wool batts:

Rock wool, blown loose fill:

Urea-formaldehyde foam:

Urethane foam:

Vermiculite:



How To Use This Insulation Calculator.

Enter Existing R-value, and the R-value you require,
check chart for options.
Use a combination of options as required.
Go to closest even number.

To determine existing R-value, enter .01 into Existing R-value,
match your type of insulation to that on the list. Juggle the
Required R-value until the level on the list is the same as you have,
that is your existing R-Value.


Feel free to click the +1 button if you found this helpful.


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URL for this web page.
http://www3.telus.net/shebang/insulationaddcalc.html


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Insulation Calculator, Determine Insulation that Needs to be Added Over Existing Insulation to Increase R-Value.