Ceiling insulation r value r value for walls and more.
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.
Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials.
Remember the horizontal or vertical orientation of the material is important to get its insulation value correct.
This calculator is to be used as an estimating tool only.
Click the button to calculate the approximate r value for this job.
Input depth of existing blown in insulation in inches.
R value of insulation is the most important guiding factor on the ability of the insulation to reduce heat flow up or down.
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.
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.
The r value calculator is best used as follows.
You should of course see the manufacturer provided technical data sheet for the r value of specific products.
R value of various materials.