Roof Insulation R Value Calculator

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.

Roof insulation r value calculator.

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. You should of course see the manufacturer provided technical data sheet for the r value of specific products. This calculator is to be used as an estimating tool only. R value of insulation is the most important guiding factor on the ability of the insulation to reduce heat flow up or down.

Whether it s a backyard workshop a man cave a studio or a potting shed you can keep your space comfortable safe with the right insulation vent. Click the button to calculate the approximate r value for this job. R value of various materials. The r value calculator is best used as follows.

Ceiling insulation r value r value for walls and more. Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials. For a very good introductory overview article on r value see r values over at the website of. Input depth of existing blown in insulation in inches.