Roof Insulation R Value Calculator

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

Roof insulation r value calculator.

Recommended home insulation r values. The higher the r value the better the thermal performance of the insulation. R value of various materials. Our insulation calculator enables simple calculation of total wall roof ceiling or floor system insulation r values.

Our calculator helps you measure what r value for exterior walls you may be looking for as well as for different applications. R value insulation chart find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. For a very good introductory overview article on r value see r values over at the website of. Ceiling insulation r value r value for walls and more.

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. The r value calculator is best used as follows. Insulation level are specified by r value.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials. Input depth of existing blown in insulation in inches. You should of course see the manufacturer provided technical data sheet for the r value of specific products.

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. The table below shows what levels of insulation are cost effective for different climates and. R value is a measure of insulation s ability to resist heat traveling through it. To convert rsi to r value multiply the rsi by 5 67826.

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. To convert the r value of a specific thickness of a material to rsi divide the r value by 5 67826.