Just got back from inspecting a house here in Norfolk, NE. Found many cracked shingles on the roof–primarily on the south side, but also on the other sides to a lesser extent.
The owner indicated that the shingles are New Horizon (Certainteed) brand shingles, installed in 2005.
The degree of cracking seems to be quite premature for a roof of this age. Attic ventilation is present and would seem “adequate” (if such a term can be applied).
Anyone have any ideas on what’s going on? I’m thinking it’s a manufacturer defect, but I’m all ears.