Rigid Board Insulation R Value Chart

You can even place it under the foundation slab.

Rigid board insulation r value chart.

These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. A higher r value means that the insulation will do a better job of holding in conditioned air whether that s heat in the winter or cool air in the summer. The common denominator among varieties of insulation is the r value. Extruded polystyrene foam xps also known as blue board or pink board comes in many different thicknesses and edge profiles.

Xps has an r value of 4 5 to 5 0 per inch of thickness. This insulation board is probably one of the most widely used foam board insulation products in the residential construction industry. Rigid insulation is one of the best tools to reduce your energy costs. Rigid foam insulation also known as insulating boards provide high r values.

As foam ages over time air and blowing agents diffuse in and out of the foam structure resulting in reduced r value. Polyiso insulation thickness 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. In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and.

Understanding r value thursday december 13 2018 what does r value mean. Rigid polyisocyanurate thermal insulation board. Notes to the table above. Choose rigid insulation wisely and consider the effect its characteristics will have on the performance of the your project overall product cost and the best way to get the bang for your buck.

For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed in your attic to reach r 30 if you live in zones 2 or 3. 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. R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another. Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same.

As a benchmark one inch of solid wood has an r value of 1. They keep your home at a comfortable temperature without the need to crank your heat. 1 844 446 7858 my account. The time of testing.

Notes on the r value k values of different forms of asbestos. 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.