I am doing my WDO training in 10 days from now. These random holes are about as big as my finger. Relatively new roof with new sheathing professionally installed above. Rafters looked 
.
Any suggestions how to document this?
No rodent poo observed.
There are holes in the insulation as big as my finger. Your welcome.
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looks like mice
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What kind of camera do you have to zoom in that close on the surface of the moon?
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My WAG would be mice or possibly if the old roof had inadequate ventilation with excessive moisture in the attic with moisture/condensation dripping off of the end of the nails.
That wouldn’t make into my report without a definitive cause, and then I would only document the cause of the “holes.”
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Samsung Galaxy Tab 9 lol
I’m with Kevin. Unless you have a related issue to go along with this, it’s just an abnormality that doesn’t significantly effect the function.
Sometimes cellulose will show signs of re-roofing. It kinda gets a “skim coat” on it and any disturbance will break that coat and cause abnormalities in the surface. But, just a wild guess.
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Mice
They like fiberglass also.
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Morning, Ryan. Hope to find you well.
No thermal imaging apparatus? A thermal camera should be able to detect tunneling temperature differences and locate mice and urine stations.
I would equate the holes in the first image as rodent, mice, “pilot tunneling holes.”
Mice generally do not like blown-in cellulose insulation because the tunnels collapse and fail when they burrow in cellulose. Being treated with boric acid as a pest deterrent, makes it an irritating and very unattractive to them. As well, loose fill cellulose blown in insulation can not carry their weight. I doubt ant rodent like mice will be there long.
Or could be pin hole leaks in a forced air vent.
That is my wag…
Mice don’t like cellulose insulation around here. Water dripping from condensation on the roof sheathing would be my guess.
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The mice holes in my cellulose insulation don’t look like your photos. My mice made actual holes and tunnels. I have industrious mice.
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And this is why I just report on a defect and not speculate on what may have caused the defect.
A few little holes in insulation would never be on my radar. There’s always bigger fish to fry.
Mice leave lots of scat and pee everywhere. Not mice. If there’s no problem there’s nothing to report.
Mice and rats in WA will burrow for days in cellulose….and leave tunnels. Was there any sort of condensation dripping on that from above? A non insulated line set? That is odd
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