Roof Rejuvenation in Williamsport, MD

A river town, with the humidity that comes with one.

Williamsport sits right on the Potomac where the Conococheague runs in, with the canal towpath along the waterfront. Being that close to a river changes what a roof deals with. Morning fog and river damp keep shingles wet later into the day than they would be a few miles inland, and anything in shade stays wet longer still.

Wet then hot, over and over, is the cycle that ages asphalt fastest. The shingle takes on moisture overnight, the sun drives it back out by afternoon, and each pass carries a little of the shingle oil with it. Through the winter that same moisture freezes in place and works the mat open instead. Neither one leaves a mark you would notice from the driveway until the shingle has already gone stiff.

What we run into on Williamsport roofs

The town itself is old. Williamsport was laid out in the late 1700s and the core still shows it, which means older homes, steeper pitches and rooflines that have been added to across generations. Almost all of those have been reroofed at least once, so the age of the current shingle is the number that matters, not the age of the house. Around the edges there is newer construction with straightforward planes, and those respond very well to treatment.

• Potomac and Conococheague damp holding moisture on the shingle
• Daily wet to hot swings that pull oil out of the mat
• Older core homes reroofed at least once, so shingle age is the number