Rigid Foam Insulation Thickness

Amazon s choice for rigid foam.

Rigid foam insulation thickness.

This foam board insulation is available with straight or tongue and groove edges to help limit air movement. Rigid foam insulation packs a lot of r value into a relatively thin package. Excelsis design pack of 15 foam boards acid free 16x20 inches many sizes available 3 16 inch thick mat white with white core foam core backing boards double sided sheets 4 5 out of 5 stars 671. Eight inches of poor quality insulation may have a higher and better r value than one inch of top quality insulation.

Used in this way the foam lowers the loss of energy through framing members a phenomenon called thermal bridging and increases the overall r value of the roof or wall assembly. Most lumberyards carry insulation ranging from 1 2 in. Rigid foam sheets are sold in several thicknesses. Extruded polystyrene xps rigid foam insulation owens corning foamular 250 extruded polystyrene xps rigid foam insulation is a closed cell highly moisture resistant rigid foam board well suited to meet the needs for a wide variety of residential and commercial construction applications.

Falls in the middle of the three types of rigid foam insulation in both cost and r value used most in walls or below grade applications recyclable and at about r 5 per inch costs around 42 per sq. For a 1 in thick 4 8 panel comes unfaced or with a number of different plastic facings. 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. 1 16 of 510 results for rigid foam insulation price and other details may vary based on size and color.

So you need to know an insulation product s thickness as well as its r value in order to compare it to another product. Thick are usually available by special order. It is denser than eps and provides more r value with a rating of 5 per inch of thickness. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses.

If you are looking for a substitute for rigid foam insulation that isn t made of plastic or petroleum you might want to consider using cork. It is often used as a layer of continuous insulation on exterior walls and in the roof. 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.