EXPOL Timber Underfloor Pack Calculator This handy calculator will show you how much EXPOL R1.4 White and R1.8 Black you need to buy. Simply enter the area to be insulated in feet or metres, then choose your joist width. The calculator will give you the number of packs you will need to complete your project.
Area to be insulated
Number of Packs Required - choose width
Welcome to the EXPOL R-Value Calculator. An R-value is a rating which measures how well insulation can resist heat flow. 'R' stands for thermal resistance. The R-value depends on the type of material, its density and thickness. Tiny air particles trapped in the insulating material resist the movement of heat (and cold).
To see R-value of thickness choose thickness, then choose product, then choose thickness value, you will then get R-value.
To see thickness of the R-value choose R-value, then choose product, then choose R-value and it will give you the thickness of the product.
Our Sheet Calculator tells you how many sheets you will need to complete your project. To see how many sheets you need, enter the area in feet or metres, then choose your sheet size. The calculator will give you the required number of sheets.
Area to be insulated
Product Size Required
