Shingle Roof Replacement in Glassboro NJ: Cost, Timeline and What to Expect

Shingle roof replacement is the single most common job we quote in Glassboro, and it is also the one where quotes vary most wildly between contractors. Two numbers for the same roof can be six thousand dollars apart, and the difference is almost never the shingle. It is what the contractor plans to do underneath it.

What it costs in Glassboro

Most asphalt shingle replacements on Glassboro single-family homes land between $6,500 and $14,000. The spread comes from four things, in roughly this order of impact: total roof square footage, pitch, how many existing layers have to come off, and the number of penetrations — chimneys, skylights, plumbing stacks, valleys — that each need new flashing.

Layer count matters more than people expect. Plenty of pre-1960 homes near Main Street are carrying two or three layers of old asphalt. That is double or triple the tear-off labor and disposal weight, and it is the most common reason a quote that started at one number ends up somewhere else. We count layers during the inspection by lifting a shingle at the eave and at a rake edge, so the number in your written quote already accounts for it.

The timeline

A typical Glassboro home is a two-to-four day job once tear-off begins. Day one is tear-off and deck inspection. If the sheathing is sound, underlayment and ice-and-water shield go down the same day, because an open deck should never sit overnight. Day two and three are the field shingles, flashing and ridge. The final day is detail work, gutter tie-ins, cleanup and a magnet sweep of the property for nails.

Steeper roofs run longer because everything has to be staged on roof jacks. Significant deck rot also extends the schedule — but you should hear about that the moment we find it, with photographs, not in the final invoice.

What should be in the quote

A replacement quote worth comparing states the shingle manufacturer and line, the underlayment type, where ice-and-water shield is being installed, whether flashing is being replaced or reused, the ventilation plan, and the layer count being removed. If a quote is one number and one sentence, you have no way to tell what you are buying.

Two items to watch for specifically. First, flashing: reusing old step flashing around a chimney saves a contractor a couple of hours and is where a large share of post-replacement leaks originate. It should be new. Second, ventilation: ridge vent has to be paired with adequate soffit intake or it does nothing, and an attic that cannot exhaust humid summer air will cook the underside of a brand new roof.

Tear-off, not layover

New Jersey code permits roofing over one existing layer in many situations, and some contractors will offer it as a cost saving. We do not do it. Roofing over hides rotted decking you are then paying to ignore, adds weight the framing was not designed for, voids most manufacturer warranties, and makes the next replacement more expensive than the savings you just captured. Tearing off to bare wood is also the only way anyone can honestly tell you what condition your deck is in.

If you are weighing a replacement on a Glassboro home, the inspection and the written quote cost nothing. Call McManus Roofing LLC and we will tell you plainly whether the roof is finished or whether a repair will carry you a few more years.