Rigid board insulation / Green Building & Sustainable Home Renovation Information & Advice

...insulation is installed outside of that. Stud cavities are still insulated with batts, but the majority of insulation is on the outside of the sheathing, this way the vapour control layer is sandwiched between layers of insulation where it can perform best in a wildly varying climate like we have in Canada. There are m...

...rigid foam insulation boards very carefuly to reduce their environmental impact. All XPS panels are not equal! EPS -  Expanded polystyrene foam insulation boards: Rated at R4 per inch; EPS foam insulation boards are more permeable to air and moisture than XPS, but it doesn't retain moisture to the same extent because o...