Roof Insulation R Value Calculator

Input depth of existing blown in insulation in inches.

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. The r value calculator is best used as follows. 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. R value of various materials.

This calculator is to be used as an estimating tool only. Our calculator helps you measure what r value for exterior walls you may be looking for as well as for different applications. Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials. Ceiling insulation r value r value for walls and more.

For a very good introductory overview article on r value see r values over at the website of. Remember the horizontal or vertical orientation of the material is important to get its insulation value correct. You should of course see the manufacturer provided technical data sheet for the r value of specific products. 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.