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Old 09-13-2017, 03:24 AM   #1
Larry4545
Junior Member
 
Join Date: Sep 2017
Location: Westwego
Posts: 4
Mildew lines on roof

Mildew lines at roof sheathing joint have grown on my roof. I am concerned about long term damage under roof cover that I cannot see. What does Keystone say about this.
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