Rigid 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.

Rigid board insulation r value chart.

Rigid insulation is one of the best tools to reduce your energy costs. In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and. Xps has an r value of 4 5 to 5 0 per inch of thickness. As foam ages over time air and blowing agents diffuse in and out of the foam structure resulting in reduced r value.

The r value for foamular xps insulation is provided from testing at two mean temperatures 40ºf and 75ºf and from two aging conditioning techniques 180 day real. Polyiso insulation thickness r value chart. 1 844 446 7858 my account. Extruded polystyrene foam xps also known as blue board or pink board comes in many different thicknesses and edge profiles.

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. You can even place it under the foundation slab. Notes on the r value k values of different forms of asbestos. As part of that standard the products must meet r value requirements presented as long term thermal resistance lttr.

These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. 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.

Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same. 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. Rigid foam insulation also known as insulating boards provide high r values.

The time of testing. They keep your home at a comfortable temperature without the need to crank your heat. Install it anywhere from the roof to the foundation. Understanding r value thursday december 13 2018 what does r value mean.

Rigid polyisocyanurate thermal insulation board. 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.