Half of the 1,545 homes in Mine Hill were built before 1966. The rules below decide how much of the old roof has to come off and what goes under the new one.
New Roofing Costs connects homeowners with independent local roofing contractors. We do not perform roofing work.
This number connects homeowners who are planning a new roof or a full roof replacement with independent local roofing contractors. It is not for leak repairs or patch jobs. The call must come from the homeowner who decides on the roof. Calls may be recorded.
Permit
Under N.J.A.C. 5:23-2.7 a reroof of a detached one- or two-family house goes ahead without a permit or a notice to the construction office. Attached houses (11% of Mine Hill’s homes) and any work that touches the structure fall outside the rule.
Source: N.J.A.C. 5:23-2.7
Layers
New Jersey deletes the IRC’s reroofing definitions (N.J.A.C. 5:23-3.21(c)2.xxii); its layer rule for existing houses is in the Rehabilitation Subcode, which this site has not read yet. 71% of Mine Hill’s homes were built before 1980: ask how many layers yours has and whether the price is for a tear-off to the deck.
Source: N.J.A.C. 5:23-3.21
Ice barrier
The state code’s ice barrier applies where the average January day is 25 °F or colder: Sussex County, per DCA Bulletin 07-3. Mine Hill is outside it, so whether to add one is up to you and the installer.
Source: N.J.A.C. 5:23-3.21; NJ DCA Bulletin 07-3
Rules as read on October 24, 2026. The state’s code edition and the rest of its rules: roof replacement in New Jersey.
Owners live in 1,337 of Mine Hill’s occupied homes, or 90%. By year built, 15% before 1940, 42% before 1960, 71% before 1980; 6% went up in 2000 or later. (ACS 2020–2024.)
By building type: 79% detached houses, 11% attached single-family houses (rowhouses, twins and townhouses), 10% buildings of two to four units.
Of the 39 Morris County municipalities on this site, Mine Hill has the 11th largest share of homes built before 1980: 71%, against a county range of 42% to 87%.
ZIP codes: 07803
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Mine Hill | 1966 | 71% | 90% | 11% | 11 |
| Wharton | 1965 | 72% | 59% | 16% | 13 |
| Dover | 1954 | 76% | 46% | 14% | 12 |
| Roxbury | 1971 | 65% | 88% | 4% | 14 |
| Randolph | 1977 | 56% | 78% | 7% | 12 |
| Victory Gardens | 1972 | 65% | 33% | 21% | 11 |
Median built: median year the homes were built. Before 1980: share of homes built then. Owners: share of homes that are owner-occupied. Row, twin: share of homes that are rowhouses, twins or townhouses. Census ACS 2020–2024. Hail days: days with hail of 1 inch or larger within 10 miles, 2006–2025, NOAA Storm Prediction Center.
Within 10 miles of Mine Hill, hail of an inch or more was reported on 11 days between 2006 and 2025, the biggest stones 1.75 in on July 7, 2013. The most recent was September 9, 2023.
Remnants of Hurricane Ida (DR-4614, September 2021) is the latest of 11 federal storm declarations covering Morris County since 2006. (OpenFEMA.)
A report says hail fell near Mine Hill, not that it damaged a roof. When wind or hail damage means a new roof.
Lifespans come from HUD’s capital-needs table, not from a brochure. More in the guides to shingles, metal, slate and flat roofs.
| Material | HUD useful life | Fits a house like | Watch for |
|---|---|---|---|
| Asphalt shingles | 20 years | Most pitched roofs; 79% of homes here are detached | Wind class set by the design wind speed (IRC Table R905.2.4.1) |
| Metal (standing seam, panels) | 50 years | Simple roofs with long, unbroken slopes | Standing seam that carries its own loads can skip the tear-off (R908.3.1) |
| Slate | 75 years | Older houses; 15% here predate 1940 | Sound slate can be reused (R908.5); broken slate cannot |
| Flat roof: EPDM or TPO | 15 years | Porches, additions, low-slope rears | Coating is not a replacement |
Any business offering home improvements in Mine Hill must be registered with the New Jersey Division of Consumer Affairs, with the number on its contracts and ads (N.J.S.A. 56:8-138, 56:8-144); 47,473 registrations were active in October 2026.
The price side is in what a new roof costs in New Jersey; the paperwork side in checking a roofing contractor.
None for a detached one- or two-family house. Under N.J.A.C. 5:23-2.7 a reroof of a detached one- or two-family house goes ahead without a permit or a notice to the construction office. Attached houses (11% of Mine Hill’s homes) and any work that touches the structure fall outside the rule.
By the Census Bureau’s American Community Survey (2020–2024), the median home in Mine Hill was built in 1966, 71% of homes were built before 1980, 90% are owner-occupied.
Hail of 1 inch or larger was reported on 11 days within 10 miles of Mine Hill from 2006 through 2025 (NOAA Storm Prediction Center). A report means hail fell nearby, not that a roof was damaged.
Any business offering home improvements in Mine Hill must be registered with the New Jersey Division of Consumer Affairs, with the number on its contracts and ads (N.J.S.A. 56:8-138, 56:8-144); 47,473 registrations were active in October 2026.
The full list: before you call.
Checked October 24, 2026. Laws and code editions change; the date says when these were last read at the source.