Montgomery County
Older inner suburbs, midcentury splits and ranches, and newer colonials further north. Heavy tree cover across most of it, which is its own kind of roof problem.
Trees are the difference here. Montgomery County has some of the heaviest mature canopy in the region, and shade is hard on a roof. North facing slopes under trees hold moisture, grow moss and algae, and shed granules years before the sunny side does. Half the roofs looked at here are failing on one plane and fine on the other.

The housing stock
The older boroughs, Norristown, Ambler, Lansdale, have twins and Victorians with steep pitches and detail work, close to what is found in the Lehigh Valley boroughs.
The midcentury belt is ranches and split levels from the fifties through the seventies. Those roofs are low pitch with long uninterrupted runs, which sounds easy and is, right up until the ventilation gets looked at. Most were built with almost none, and that is what cooks a roof from underneath.
North and west, through Blue Bell, Skippack and Harleysville, the stock is newer and larger. Multiple gables, dormers and garage roofs at a different pitch than the house, so the square footage runs well past what people estimate from the driveway.
What shade does
Recent work
Recent residential work from across the coverage area. Every photo is a Condition One job, shot on completion.



Montgomery County questions
Under heavy tree cover, yes, and it is the single most common thing found in this county.
The question is whether the good side has enough life left to justify doing only half. Sometimes it does. More often the seams between old and new become the next problem, and that gets explained with photos rather than asserted.
Sometimes, if the shingle underneath still has granules and flexibility left.
Pressure washing a roof destroys it, so anyone offering that should be turned away. If cleaning is a reasonable option here, you will be told that rather than sold a replacement you do not need.
Down to a point, yes, and below that point no.
There is a minimum pitch below which shingles cannot shed properly and a membrane is the correct material. That gets measured at the inspection instead of guessed.
Yes. Montgomery, Bucks, Delaware and Chester counties are all in the regular working area.
There is no trip charge, and the inspection is free the same as it is at home.
Free inspection, photographed plane by plane, and an honest answer on whether half a roof or a whole one is the right call.