Slate Roof Replacement in Orange from $15. Before you replace it: slate outlives its own nails, and that is usually what has actually failed. Free inspection and a written quote.
Orange has slate of the same age and the same problem. The useful local question is whether a previous owner already stripped part of it -- a roof that is half slate and half asphalt is common here, and it tells you the decision was made once already without much thought.
Replacing an existing slate roof runs $20 to $35 per square foot -- $40,000 to $70,000 on an average house -- because the old slate has to come off and be disposed of before the new roof starts. A new slate roof is $15 to $30 per square foot. Those numbers are why this page leads with an argument rather than a sales pitch.



Replacing an existing slate roof runs $20 to $35 per square foot -- $40,000 to $70,000 on an average house -- because the old slate has to come off and be disposed of first. A new slate roof is $15 to $30. Those numbers are exactly why this page argues against the job before it prices it. Comparable to East Orange on the roofing and identical on the state code, with one administrative difference worth getting right: a permit goes to the City of Orange. Filing at the wrong desk costs a week, and it happens because the names sit so close together.
Slate outlives almost everything fixed to it. On a pre-war roof the usual failures are corroded nails, which let slates slip, and rusted valley linings and flashings. All three are repairs, at a small fraction of a replacement.
A steep or cut-up roof, scaffold over occupied units, a slate size or color no longer quarried, and a deck that has to be renewed underneath. Slate work also cannot be rushed without breaking material, so the honest schedule is weeks.
Widespread delamination, slate soft enough to break in the hand, or a deck that has gone. We will say when that is what we found and show you the elevation it is true of, rather than asserting it.
Same building types, different construction office. A permit, where one is required, goes to the City of Orange rather than East Orange, and filing at the wrong desk costs a week -- which happens more than it should, because the names sit so close together.
Two clocks run on this work in this city and only one of them is about the weather.
Northern roofs fail at the edges in the freeze. Water backs up under the courses at the eaves, freezes, lifts them, and the ceiling below stains during the first thaw -- so the calls arrive in a cluster, in the same two weeks, and the roof that could have been done comfortably in September becomes an emergency in February.
The same buildings and the same state code, but a different desk: a permit goes to the City of Orange rather than East Orange.
Identical building type, different construction office.
Same stock, same failures, and the same freeze.
Consistent pre-war stock means the deck is reasonably predictable, which makes an Orange shingle quote easier to compare than most.
The permit question changes with the scope, and that is worth checking before deciding.
The three-unit line runs right through this city.
The largest houses, and where slate survives.
Genuinely mixed eras. A neighbor proves nothing.
Duplexes divided into three, and the traces that leaves.
Tight frontages, tenants, and nowhere to park a dumpster.
Flat roofs behind parapets. Access comes first.
Three-plus units is the default, not the exception.
The questions that come up, before you have to ask.
Much cheaper up front -- $4.50 to $8.00 a square foot against $20 to $35 to replace slate -- and frequently the wrong decision, because a repairable slate roof has decades left. It is also irreversible on a period house. We will price both honestly and say which we would do.
Often, where the size and color are still quarried. Where they are not, the best match available is sound slate salvaged from a low-visibility elevation of your own roof -- which is why slate coming off is stacked carefully rather than treated as waste.
Across separate structures, yes, and it is often the right answer -- a garage, a rear addition and the house are three roofs of three different ages. Across one roof, usually not: mobilization and waste cost much the same twice as once, you get a visible line where new meets weathered, and the half left behind ages through another winter.
No. The inspection is free, the written quote is free, and neither carries an obligation. The survey also answers the unit-count and permit question in writing, which is worth having even if you use somebody else. What we will not do is give you a number at the curb without going up.
Yes. The ordinary-maintenance exemption in N.J.A.C. 5:23-2.7 reaches one- and two-family dwellings, so at three units a covering replacement becomes permitted construction work with an inspection at the end. There is a second consequence as well: at three units the building is a multiple dwelling under N.J.S.A. 55:13A-1 et seq.
Unit count established before anything is priced. New Jersey figures, not a national calculator.