Return to Installation
Return to Forum
I am building a large barn/workshop. Roof will be insulated/no attic. Everything was cut from my wood mill and the roof decking is 5/8" boards 10-12" in width. I have synthetic underlayment on all ready. Was going to install metal roofing directly to deck but worried about venting/radiation of heat etc. If I install purlins what is the best way to vent drip edge and prevent bugs etc, inside closure strips are solid foam? should I worry about radiant heat, its not my house only a work shop but will be insulated and heated at times. Thanks
Thanks. I would suggest discussing with your metal roofing supplier. However, if you run horizontal purlins, I really see no need for vents. The horizontal purlins will create a thermal break to help discourage condensation on the inside of the structure. If you want to cross-batten (vertical and then horizontal), then you could think about some sort of eave and ridge vent detail but, otherwise, it will not do much good.
If you would like to reply to this thread, please
If you do not have an Ask the Experts forum user account,