I'm using this exact foam and have been for. ..I want to say a year.
http://m.homedepot.com/p/Owens-Corn...ared-Edge-Insulating-Sheathing-36L/100320356/
I rolled 2coats of plain flat/matte white paint directly onto its plastic covering without primer.
I suggest you buy a gallon (usually a gallon of flat paint is only about $2 more than a quart) and paint both sides.
When buying paint, you can either tell the clerk a specific brand or what you'd like to pay, and just let them know what size and gloss (flat or matte) and color you want.
For example; "I'd like a gallon of flat paint tinted "universal grey"..gimme something cheap, like $10 or 15."
I think "universal grey" would be a solid choice for a grey shade..it's about 0.7gain so it should still be plenty bright at that size.
http://m.homedepot.com/p/Owens-Corn...ared-Edge-Insulating-Sheathing-36L/100320356/
I rolled 2coats of plain flat/matte white paint directly onto its plastic covering without primer.
I suggest you buy a gallon (usually a gallon of flat paint is only about $2 more than a quart) and paint both sides.
When buying paint, you can either tell the clerk a specific brand or what you'd like to pay, and just let them know what size and gloss (flat or matte) and color you want.
For example; "I'd like a gallon of flat paint tinted "universal grey"..gimme something cheap, like $10 or 15."
I think "universal grey" would be a solid choice for a grey shade..it's about 0.7gain so it should still be plenty bright at that size.