Roof Insulation R Value Calculator

This calculator is to be used as an estimating tool only.

Roof insulation r value calculator.

The r value calculator is best used as follows. Remember the horizontal or vertical orientation of the material is important to get its insulation value correct. As a result the higher the r value the better the insulation properties when it comes to roof insulation in fact what this means is by increasing or decreasing the thickness of the insulation one can change the effectiveness. Input depth of existing blown in insulation in inches.

Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials. R value is a measurement that rates how resistant a product is to heat flow measuring the ability of heat to transfer from one side of an object to another. Click the button to calculate the approximate r value for this job. R value of various materials.

Work out all the different materials and surfaces that make up the wall ceiling or surface you want to work out the r values and u values for. Ceiling insulation r value r value for walls and more. Our calculator helps you measure what r value for exterior walls you may be looking for as well as for different applications. For a very good introductory overview article on r value see r values over at the website of.