They call me Agent K (no they don't). I'm a licensed home inspector and this is today's story.
Long Story Short
Today it's dreary, gray, about 31°F. Yesterday, a decent amount of heavy, wet snow fell.
A little while ago (it's noon here), I performed a moisture intrusion inspection that turned out to be less about moisture intrusion and more about attic condensation, the likes of which I've never seen.
Short Story Long
Entering the ranch style home, I'm taken to the kitchen where I'm shown black water dripping from the the head of a sliding door separating a new addition and the old house. The new addition has a cathedral ceiling and houses a lap pool.
Buckets, pails and at least one trash can are almost filled with the stuff. I do an infrared scan of the interior, seeing cold spots at can lights and wall/ceiling intersections. I take RH and temp levels; both are elevated. I set up and climb my ladder to the attic.
In there it's literally raining. Every time I bump a rafter, drops of water fall like when shaking a tree limb after a summer rain.
There's a standalone dehumidifier that's not working because the genius who set it up ran the gravity drain hose uphill. An industrial blower fan pushes around air so water-laden I can see it. The space is dark, dank and cave-like. 66° and 54% RH. Shining my headlamp around I spot an active plumbing stack termination, a couple flat-roof breathers and uninsulated ductwork.
Puddles are everywhere. Mold is everywhere. Little rivulets of water stream down the old roof toward what was once the house's north exterior wall.
All this is tucked away between an old, shingle/flat roof combo and a new pitched roof extension. ...an attic over an attic, as it were.
Attic ventilation consists of intermittent soffit vents and a ridge vent that's more sponge than vent. In the addition there are two bathroom-style vent fans with exterior termination.
I've a good idea what I'll report and, keelhauling a GC aside, what I'll recommend.
I just wanted to share.
Thanks for reading.
Agent K