As a project manager who’s always pushed for time, calculating the expanded polystyrene r value, needed for an insulation target, can be the last thing you have time to do. Using the insulation r value calculator on the Universal Foam Products website can give you an instant answer. Back this with our customer service team of foam insulation experts, available at 410-498-0000, and you should have everything you need to know at your fingertips. Try the online calculator.