Expanded Polystyrene Foam Insulation For Basement Walls

Expanded polystyrene foam insulation for basement walls.
Expanded polystyrene foam insulation for basement walls. For a basement remodeling project consider insulating basement walls with foam board. In most basement wall situations the foam plastic insulation material will need to be covered by a fire ignition barrier. Expanded polystyrene foam insulation for basement walls. Rated at r4 per inch.
Attach the tongue and groove insulation boards to the concrete wall with adhesive. This product typically has an r value of 3 6 to 4 0 per inch of thickness. Half inch gypsum board usually provides sufficient ignition barrier check your local building code. Expanded polystyrene insulation is similar to the foam used for packing peanuts and it s typically used for insulated concrete forms also.
Green builders prefer eps to xps since xps is manufactured with a blowing agent that has a high global warming potential. Estimated savings for r 10 insulation range from 250 in washington dc to 400 in minneapolis. Seal vents and insulate exterior walls what is eps or expanded polystyrene choosing between eps and xps rigid placement of thermal insulation. When using foam insulation on basement walls the building code irc requires r 5 for southern states excluding the deep south and r 10 for the rest of the us.
There is almost. Basement walls don t need to dry inward so it s ok to use foil faced rigid foam for this purpose. This is the same stuff your disposable coffee cup and is made out of and it s used to protect fragile items in their packaging. Follow with a 2x4 frame wall and insulate it with batt insulation.
On october 3 2020 by amik. It provides an r value of 4 per inch of thickness and is the cheapest type of foam board insulation. Expanded polystyrene foam eps is the cheapest and least used foam board product on the market. Polystyrene foam boards commonly called foamboard are a clean lightweight convenient way to insulate bare concrete walls.
Eps foam insulation boards are more permeable to air and moisture than xps but it doesn t retain moisture to the same extent because of it s more closed cell structure and it s breathability which lets it dry out. When this ignition barrier is supported on a stud wall the cavities of this wall may be filled with supplemental insulation. For more information on this issue see joe lstiburek discusses basement insulation and vapor retarders. How to glue polystyrene insulation to a concrete wall.
Eps expanded polystyrene foam insulation boards. Use a premade kit for this type of project.