It keeps comfort and safety in - and the other stuff out. Help create the year-round protection every home deserves with proven solutions that work where and when you need them most.
FOAMULAR is a rigid insulation board made of extruded polystyrene. XPS for short. Compared to EPS products, FOAMULAR XPS has 25% more insulating power and is 10 times more water resistant.
FOAMULAR provides continuous insulating power around the entire home from the foundation to the roofline and all kinds of spaces in between.
FOAMULAR is the easy-to-install insulating solution for basement walls. Get added comfort with PINK Fiberglas insulation and finish with drywall board.
FOAMULAR is ideal for insulating exterior foundation walls. Extremely durable, it can withstand up to 15-25 psi and resists common acid soils and decay.
FOAMULAR provides a higher R-value per inch than other materials commonly used for exterior wall sheathing.
FOAMULAR Fanfold is generally intended for use as a backer board for residing applications and comes in 50-foot sections for a faster install.
Virtually impervious to moisture. FOAMULAR has up to 10X more resistance to water than EPS insulation.
A wide range of compressive strengths –up to 100 psi – to handle heavy loads.
Easy to handle, score, cut and install; no special tools needed.
High, stable R-value (5 per inch of product thickness) - more than wood fiber, plywood or 1/2” gypsum board.
Foamular is certified to meet indoor air quality standards under the stringent GREENGUARD Gold Certification Program.
The only XPS with a limited lifetime warranty that guarantees a minimum 90% of R-value for the life of the product.
Hello Emzet, Owens Corning cannot make any recommendation on intumescent paint to try and make Foamular fire rated. Thank you for your inquiry!
Hello JoeD, Foamular is not intended for an application over joists. Point loads from walking on the plywood could cause compression concerns to the Foamular. Thank you for your inquiry!
I use two layers and have great sound reduction
Hello Bill, please contact your local Home Depot for pricing and availability. Thank you for your inquiry!
Dear JDog: Foamular XPS foam board is ideal for sauna insulation because it does not absorb moisture. Polyiso foam board does. One key caveat: Foam board is flammable and must be covered by an approved thermal barrier, e.g. 3/4" plywood. Use marine / exterior grade, then apply cedar shiplap on top. Never install foam board near a source of heat, e.g. the 'rock box' or heater for your sauna. Use rock wool near sources of heat; it is flame resistant and provides R-4.1 per inch of thickness. This must be covered as well, because rock wool fibers are irritating like fiberglass. Again, you could cover it with cedar shiplap. If you don't want to use foam board due to the flammability issues, Rock Wool makes a version called RockBoard that you can order from your Home Depot's Customer Service or Pro desk. This produce is 1 1/2" thick and provides R-6. You can install it like foam board, and it does not absorb water, and resists fire. Home Depot sells many products like this that are not on retail store shelves; they will deliver quickly to your store for no charge, or to your home or jobsite for a small fee. Ask for "RockBoard 60" with poly facing. I hope this is helpful. My family is from Finland so we know from saunas. Mark
Hello jimmo, Owens Corning Foamular products should not be used in exposed applications. The Foamular is a combustible product and needs to be covered by a 15-minute thermal barrier such as 1/2" drywall. Thank you for your inquiry!
There are many ways to do this. The most popular method is to attach the foam panels to the block wall, then build the 2x4 wall... some people butt the wall up against the foam panels, and some leave an "air gap" which supposedly helps air out any moisture that gets between the 2 walls. Whatever you decide upon, you should probably treat the block wall with a product like Dryloc to seal the pores from moisture/humidity, and use a vapor barrier/plastic sheeting to protect both sides of the unfaced batt insulation wall from moisture and humidity, and attach your drywall over that.
Hello MJ, Owens Corning does not recommend using Foamular in this type of application. Foamular is a combustible product and needs to be covered by a 15 minute thermal barrier such as 1/2" drywall. Thank you for your inquiry!
Dear Nik: If you mean, "Cut a piece that fits inside a window frame", this will not be very effective unless you have a tight air seal around the perimeter -- e.g. with a carefully cut-to-fit piece of foam board. Also be aware that foam board is flammable and emits toxic gas when it burns. It sounds like you need new windows. I hope this is helpful, Mark