Roof Insulation R Value Calculator

Input depth of existing blown in insulation in inches.

Roof insulation r value calculator.

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. Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials. Built by esd consultants low impact development lid consulting in melbourne australia the r value calculator is a practical tool to simplify total insulation calculations. 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.

To convert rsi to r value multiply the rsi by 5 67826. Click the button to calculate the approximate r value for this job. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Recommended home insulation r values.

This calculator is to be used as an estimating tool only. R value is a measure of insulation s ability to resist heat traveling through it. You should of course see the manufacturer provided technical data sheet for the r value of specific products. Remember the horizontal or vertical orientation of the material is important to get its insulation value correct.

To convert the r value of a specific thickness of a material to rsi divide the r value by 5 67826. The table below shows what levels of insulation are cost effective for different climates and. 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. Ceiling insulation r value r value for walls and more.

The r value calculator is best used as follows. 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. Insulation level are specified by r value. Our insulation calculator enables simple calculation of total wall roof ceiling or floor system insulation r values.

The higher the r value the better the thermal performance of the insulation. R value of various materials.