vapor barrier Articles

Metal Roofing Over Insulated (SIP) Panels

June 21, 2009

Q: I have a new structure with 12 1/4″ structural insulated panel roof at a 2:12 pitch. (The low pitch is due to code which requires me to retain the snow load.) There is no attic space to ventilate and the roofing must be applied to the top surface of the insulated (SIP) panels. Even… ( read more )

Underlayment or Not?

June 9, 2009

Craig asks: Q: Hi, I’m considering replacing the roof on my hunting camp with new tin. I was curious what to put under the tin as a underlayment. I believe there is tar paper now however someone told me I didn’t need an underlay and could just fasten it directly to to the boards. This… ( read more )