Foam Board Insulation R Value Chart

Xps has an r value of 4 5 to 5 0 per inch of thickness.

Foam board insulation r value chart.

As a benchmark one inch of solid wood has an r value of 1. Because rigid foam plastic insulation products are not all aged in accordance with the same standards it is useful to publish comparison r value data. Recommended home insulation r values. The table below shows what levels of insulation are cost effective for different climates and.

Other materials may only have a fifty percent increase in r value when their thickness is doubled. R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another. These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. The higher the r value the better the thermal performance of the insulation.

This insulation board is probably one of the most widely used foam board insulation products in the residential construction industry. Notes on the r value k values of different forms of asbestos. Spray foam pink fiberglas vs. R 3 2 polyisocyanurate rigid foam insulation board r matte plus 3 thermasheath 3 is rigid foam r matte plus 3 thermasheath 3 is rigid foam plastic thermal insulation board.

The common denominator among varieties of insulation is the r value. It s made of environmentally sound closed cell polyisocyanurate foam bonded to a durable white matte non glare aluminum facer and a reflective reinforced aluminum facer. 1 844 446 7858 my account. R values vary depending on many factors including the mean temperature at which the test is conducted and the age of the sample at the time of testing.

Rosato asbestos insulation is the most authoritative source on asbestos properties and gives data for the thermal conductivity of asbestos in different forms and with varying temperatures for magnesia asbestos insulation at mean temperatures ranging from 100 f to 400 f the k value thermal. This is the product that i typically use to insulate basement walls. As a foil faced polyisocyanurate foam insulation enerfoil tm s r value actually more than doubles when it is twice as thick as you can see from the chart above. R value is a measure of insulation s ability to resist heat traveling through it.

In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and. Find your zone on the map and then use the above insulation r value chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. Notes to the table above. Our r value guide to rigid insulation includes the doe s recommended insulation by zone chart r value calculator and base building material r values chart.