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Main Line stone houses and twins near Rosemont College, with steep pitches, deep valleys and chimneys that need real flashing.
Rosemont occupies the western edge of Lower Merion Township, around Rosemont College and the Main Line rail corridor. The housing was largely built between the 1890s and the 1930s: stone and stucco twins, center-hall colonials and larger houses with slate originally on the roof. Pitches are steep, gables cross, and most houses carry at least one substantial masonry chimney.
Masonry and roofing meet badly when someone hurries. We rebuild chimney counterflashing into the mortar joint, replace valley metal rather than shingling over it, and set ice-and-water where the geometry concentrates water. Lower Merion Township issues the roofing permit and performs the inspection under the PA Uniform Construction Code.
The full Maze Roofing range, residential and commercial, from the local team.
Shingle, tile, metal and flat roofing for homes and townhomes across the area.
Shingle, tile, metal, flat and TPO. Managed from tear-off to cleanup.
Flat, TPO and metal systems, with maintenance programs that protect the asset.
Storm damage, active leaks and fallen trees, with 24/7 phone response.
On houses of this era the field of the roof usually outlives the flashing, so a wet ceiling almost always traces back to masonry or a valley.
Flashing must be cut into the mortar joint, not sealed against the brick face.
Cross gables concentrate flow, and old valley metal corrodes at the fold first.
Some Rosemont roofs are original slate, worth repairing rather than tearing off.
Roofing permits for Rosemont addresses come from Lower Merion Township.
Same office, same crews, a short drive away.
Bryn Mawr · Villanova · Haverford · Ardmore · Wynnewood · Gladwyne · Penn Valley
Often the flashing is, not the masonry. Counterflashing should be let into a mortar joint and lapped over step flashing on the roof. When it has been caulked to the brick instead, it fails within a few years. We rebuild that detail, and tell you if the crown or pointing also needs a mason.
Yes. Rosemont is a place name inside Lower Merion Township, so the township issues the roofing permit and performs the inspection under the Pennsylvania Uniform Construction Code. Montgomery County has no role in it. We file the permit and manage the inspection so it does not fall to you.
Yes, and honestly so. Steep pitch means staging, roof jacks and slower work, and it shows up as a labour line rather than a material one. The trade-off is that steep roofs drain well, and their shingle often lasts longer than the same product on a shallow slope.
Those dark vertical streaks are airborne algae feeding on the shingle’s limestone filler. Cosmetically it is obvious, structurally it is minor, and it is common on shaded Main Line slopes. Algae-resistant shingle with copper in the granules prevents it on a replacement, and existing roofs can often be cleaned.
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