Flat Roofing in Holland Township

Not in itself. Water that clears within a day or two of rain is normal. Water still there a week later is a seam being tested continuously, and it usually means the fall does not run where somebody said it did.

Because it has probably been terminated with sealant rather than properly formed and fixed. On old masonry there is often nowhere obvious to tuck an upstand into, so somebody reaches for a tube. Sealant is a finish, not a fixing, and it is the commonest failure on this kind of roof out here.

Usually not, on a house. Replacing the roof COVERING on a detached one- or two-family dwelling is ordinary maintenance under N.J.A.C. 5:23-2.7 -- no permit, no notice, no inspection. Out here there is a second question that does not arise elsewhere: an agricultural building is a different case, and the answer depends on what it is used for. That gets asked of the township rather than assumed from a website, and each of the five municipalities in this service area has its own construction office.

It depends far more on the material than on the state, and out here the materials are not all asphalt. Architectural asphalt typically gives 20 to 30 years and three-tab 15 to 20. Standing seam metal commonly gives 50 and more. Exposed-fastener panel gives a long life too, but its screws and washers are consumables and want re-tightening -- a panel roof nobody has touched in 25 years is on borrowed time at its fixings rather than in its sheets. Natural slate outlasts all of them, frequently by a century, which is why so much of it around here needs nails rather than stone.

For a standard asphalt roof on an average house, yes -- that is well above the $12,000 to $18,000 most land at. For a large barn it can be entirely normal, because a barn roof is enormous even though the rate per square foot is the lowest of anything we do. And for natural slate at $22 to $35 a square foot it is unremarkable. The number on its own answers nothing; what the quote itemizes does.