Polycarbonate Roofing Contractors
Your decision might also include the following six questions:
1. How does the insulation handle water from the outside?
2. Can the insulation perform as an air barrier if your building needs one?
3. Does your code or location dictate the use of a vapor barrier? If so, does the insulation serve that purpose? “For example, an EPS product is a very vapor-open product. A foil-faced polyiso is a vapor-closed product,” Robertson says. “One or the other of those might be the right way to go for you.”
4. What greenhouse gas emissions were released during the manufacturing of the insulation? “Almost all of our manufacturers have Environmental Product Descriptions that list emissions,” Haack says.
5. How easy is it to install the insulation?
6. How much does it cost? Polycarbonate Roofing Contractors
“The No. 1 thing you’re choosing here is what you’re going to spend on energy in the coming years,” Robertson says. “A lot of people overlook R-value. We get caught up in whether it manages vapor or fire, but the first thing it’s got to do is insulate. Insulate the building first, then make sure the insulation you’ve chosen is going to meet the code requirements for fire performance – and they probably all will.