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[Zibby Swieca]

[ATTACH]18967

[John Arnold]

Isn't that a skylight?

[Thomas McKay]

Its a skylight with copper flashing which has had a chemical effect on the wood shake roof cover (whitening). Not a problem.

Thomas W. McKay
ASHI Certified Inspector

[chris mcintyre]

It's a Velux skylight, they come with a flashing kit and I have never seen one with copper flashing. The flashing is aluminum as is the rest rest of the exterior cladding all with the same painted finish.

I would guess that the bleached out area on the shingles/shakes is a result of cleaning the skylight.

[James Duffin]

My guess is galvanized flashing at the bottom and the zinc in the galvanized killed the mildew on the roof.