Foam Board Insulation R Value Chart

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.

Foam board insulation r value chart. The table below shows what levels of insulation are cost effective for different climates and. Rmax r matte plus 3 1 2 in. This is the product that i typically use to insulate basement walls. 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.

This insulation board is probably one of the most widely used foam board insulation products in the residential construction industry. As a benchmark one inch of solid wood has an r value of 1. 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. Insulation level are specified by r value.

Insulation project calculator how to install naima r value certification product training videos colab learning video library for pros distributor locator why owens corning insulation propink vs. 1 844 446 7858 my account. 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. Notes to the table above.

The higher the r value the better the thermal performance of the insulation. Notes on the r value k values of different forms of asbestos. Spray foam pink fiberglas vs. 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. Xps has an r value of 4 5 to 5 0 per inch of thickness. 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.

In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and. 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. 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.