I first went to this Frederick Maryland house a couple of years ago. At that time. I told the owner that the roof was ready to be replaced.

The adhesive seams on the individual shingles were coming apart, and it was just a matter of time until the wind blew hard enough from the right direction for the roof to fail.

wind and water can get under the shingles and start a leak

When the wind lifts the shingle from the one below it. It can now catch a lot more wind than before. Think sails on a boat being pulled up the mast.
Now the wind and water can get under the shingles and start a leak.
Leaks rarely fall directly under the penetration becau8se the water just runs down the roof o the outside or the inside, and drips down where it will.

What happens is as follows. When the wind lifts the shingle from the one below it. It can now catch a lot more wind than before. Think sails on a boat being pulled up the mast.

Now the wind and water can get under the shingles and start a leak.

Leaks rarely fall directly under the penetration because the water just runs down the roof o the outside or the inside, and drips down where it will.

Two years later, I got a call to come and look at the roof problem. We put a small tarp on the obvious opening, as it was raining at the time and very treacherous.

The owner opted to call a handyman to put some new shingles where the original opening appeared in the roof.

Two years later, I got a call to come and look at the roof problem. We put a small tarp on the obvious opening, as it was raining at the time and very treacherous.

We were called inside the home to see cracks in the ceiling from the weight of the water soaking the insulation and drywall. We placed a tarp on the floor below the crack

Two days later, we received another call for service because the ceiling had collapsed.