Delaware County
Some of the oldest housing stock in the region, packed tight. Twins, stone colonials and a front porch on almost every block.
The porch roof is the problem in Delco. Almost every older house here has a porch or a rear addition with a roof far flatter than the main one. Shingles cannot shed water at that pitch, so it needs a membrane, and putting shingles on it anyway is the most common failure found on inspections in this county.

Why it leaks
The main roof and the porch roof are different jobs. The main roof is steep enough for shingles. The porch, the rear addition, the bay window cap and the shed dormer are usually not, and each one is a separate detail where the two systems meet.
That meeting point is where water gets in, and it is why a homeowner can put a whole new roof on and still have a stain on the living room ceiling six months later. If the porch was left alone, the roof was not finished.
Housing here also runs older than most of the region, a lot of it built between the twenties and the fifties, so decking condition matters more. What is under the shingles gets photographed during the tear-off rather than described after the fact.
Around the county
Recent work
Recent residential work from across the coverage area. Every photo is a Condition One job, shot on completion.



Delaware County questions
Usually the porch or the rear addition was not part of the job.
Ask whoever did it what went on the low slope sections. If the answer is shingles, that is the leak. A free inspection will show you photos of the transition so you can see it for yourself.
No, though the shared wall between you has to be flashed properly whichever side is being worked on.
That detail gets built into the quote rather than treated as an extra when the crew is already up there.
Usually, and it gets worked out before the day of the tear-off.
Narrow streets and permit parking are normal here. Knowing where material and debris can sit is what keeps a job to one day instead of two.
It depends on the condition of the slate and the deck under it.
Some are worth repairing, some have been patched past the point of sense. That is a look-first conversation, and you will get a straight read rather than an automatic pitch for a full replacement.
Free inspection covering every section of the roof, photographed, including the parts you cannot see from the street.