Plywood sheathing rotten at drip edge of roof

Tim Nichols
I have a 6 year old barn style workshop 2 story 36'wide x 50' long with 25' wide enclosed sheds on both sides. Sheds are 3/12 pitch with 5/8 sheathing,Titanum underpayment and metal roofing. Screws are on the flat surface. Foam enclosure strips at lower drip edge, at pitch breaks and at ridge vents. Screws started to come loose at drip edge of shed roofs. I raised up the metal and found sheathing rotten 6 to 8 inches above foam enclosure strips. Can this be caused by condensation.
Eric Novotny
An informed customer is the Best Customer!
Yes. But you mention underlayment here. Does it not extend all the way down?

If you would like to reply to this thread, please log in. If you do not have an Ask the Experts forum user account, create one here.

Find a Contractor

Get Started Today

Take the first step to increasing the value of your home with a great looking, durable, fire resistant and energy efficient metal roof. Browse our list of qualified MRA Member Roofing Contractors in your area for a free consultation and estimate.