No sheathing (deterioration) present under these shingles…
Why those that say walking a roof is # 1 part of Inspection… HHhhmmmmm.
If you walked, you would have fell thru…
I inspect the Attic First…
Plywood was not installed correctly!
1/4 inch plywood not to mention lack of H-clips…cheap bastards!
No tongue and grove ply and no H clip plus added escaped moisture from the Kitchen fan exhaust.
Well, we know part of the problem is not having H-clips with 1/2" plywood spaced at 24" centers.
Now let’s look around a bit.
Well, that is not a good sign;
Well look what is here;
And here;
Might take years to show up problems, but it does eventually.
The other problem is lack of ventilation. Some of the eave baffles were blocked and with the building being so long, ridge vents would be required to ventilate the attic properly.
The fold down stairs should be insulated as well and gasketed. Tremendous heat loss from those units.
Well hope you enjoyed my Saturday morning. I had my Trade hat for that day. ;):mrgreen:
Nice thanks for the info Marcel! LOL
Thanks Marcel. Love that you take and post a lot of pic’s so we actually have a sense of ‘being there’ with you!
1 Like
Thanks, Nice work!
Did they shingle over a bracket rather than remove it?
So… it’s bowing caused by plywood expansion from excessively high moisture levels in roof sheathing due to poor ventilation?
Looks like it was pretty localized. Was it happening near those bath vents?
Within 15-20 feet Kenton, but their had to be some defect in the plywood also for it to bend up 45 degrees in a few inches.
I requested the owner hire a roofer to fix it. I am getting to old for this and it was to close to the edge of the roof.
They will need to remove the shingles and Ice and watershield and cut out that bad piece of plywood and re-do it.
The owner of the buildings (5) requested me to walk with them next month as a Carpenter of course, to point out all the things that are reaching a point of repair on the buildings.
Might get me a good maintenance job for the winter weekends. 
You’d think it’d be right close to the vent outflow. Maybe those plywood edges had a high percentage of voids.
Buildings were built in 1978 Kenton, wonder why it took all this time for that one area of one building out of four identical building with the same building components.
I have a picture similar to this in my Haag Field Guide. It puts the damage down to cyclic expansion and contraction of the tabs
Nice adventure Marcel! Thanks… Fun read and informative!
Now we know where the roofer laid his hammer.
Here’s one from a recent inspection.
Can’t really see it in the first picture but it was noticeable from the ground.
Second and third pictures from inside the attic and I could clearly see they missed the nailing on the truss.
And that spacing looks like 16" to Peter.
1/2" or 5/8" plywood?
marcel, it’s 1/2 inch
Pictures of the plywood I took was built in 74. Still not 100% sure what caused that plywood to curl up that bad in a few inches.
Must be an anomaly.;):mrgreen: