Half of the 415 homes in Mifflin Township were built before 1985. What the code requires when that roof is replaced, and who signs off, is below.
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
The state code does not cover a reroof that changes no structure (34 Pa. Code § 403.1(b)(8)). Whether Mifflin Township wants a permit is in its own ordinance; ask the township code office before the old roof comes off.
Source: 34 Pa. Code § 403.1(b)
Layers
A new roof may go over one existing layer; with two or more, or over slate, clay or cement tile, everything comes off to the deck (IRC R908.3.1.1). With 42% of Mifflin Township’s homes were built before 1980, ask what is under the newest layer.
Ice barrier
The code requires an ice barrier where the local climate table (Table R301.2) says so, and each Pennsylvania municipality fills that table in. The contractor or the township code office in Mifflin Township will know.
Rules as read on October 24, 2026. Everything else the state requires: roof replacement in Pennsylvania.
Owners live in 325 of Mifflin Township’s occupied homes, or 78%. By year built, 23% before 1940, 26% before 1960, 42% before 1980; 15% went up in 2000 or later. (ACS 2020–2024.)
By building type: 66% detached houses, 34% manufactured homes.
34% of homes in Mifflin Township are manufactured homes (139). A roof on a manufactured home is its own kind of job; tell the person on the line that it is one.
Of the 26 Lycoming County municipalities on this site, Mifflin Township has the smallest share of homes built before 1980: 42%, against a county range of 42% to 93%.
ZIP codes: 17740
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Mifflin Township, Lycoming County | 1985 | 42% | 78% | 1% | 3 |
| Porter Township, Lycoming County | 1977 | 58% | 81% | 2% | 5 |
| Woodward | 1981 | 48% | 84% | 1% | 9 |
| Jersey Shore | 1938 | 93% | 70% | 2% | 6 |
| Lycoming | 1970 | 68% | 87% | 1% | 8 |
| Pine Creek | 1974 | 59% | 98% | 3% | 5 |
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.
Since 2006 the National Weather Service has logged hail of 1 inch or larger on 3 separate days within 10 miles of Mifflin Township; the largest was 3 in on May 28, 2019.
That is fewer than most places in the state on this site (median 12 days).
Federal major-disaster declarations for storms in Lycoming County since 2006: 3, most recently DR-4815, Tropical Storm Debby, declared September 2024. (OpenFEMA.)
A report says hail fell near Mifflin Township, not that it damaged a roof. When wind or hail damage means a new roof.
Useful life is HUD’s planning figure, not a warranty. 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; 66% 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 | Low pitches and long runs | Standing seam that carries its own loads can skip the tear-off (R908.3.1) |
| Slate | 75 years | Older houses; 23% here predate 1940 | Can’t be roofed over; check the framing for the weight |
| Flat roof: EPDM or TPO | 15 years | Porches, additions, low-slope rears | Seams at walls and drainage |
Before signing for a roof in Mifflin Township, get the contractor’s PA registration number: the home improvement law requires registration with the Attorney General above $5,000 a year of such work, and the number on contracts and estimates (HICPA § 3, § 6).
The price side is in what a new roof costs in Pennsylvania; the paperwork side in checking a roofing contractor.
Local ordinance, not the state. The state code does not cover a reroof that changes no structure (34 Pa. Code § 403.1(b)(8)). Whether Mifflin Township wants a permit is in its own ordinance; ask the township code office before the old roof comes off.
A new roof may go over one existing layer; with two or more, or over slate, clay or cement tile, everything comes off to the deck (IRC R908.3.1.1). With 42% of Mifflin Township’s homes were built before 1980, ask what is under the newest layer.
By the Census Bureau’s American Community Survey (2020–2024), the median home in Mifflin Township was built in 1985, 42% of homes were built before 1980, 78% are owner-occupied.
Hail of 1 inch or larger was reported on 3 days within 10 miles of Mifflin Township from 2006 through 2025 (NOAA Storm Prediction Center). A report means hail fell nearby, not that a roof was damaged.
Before signing for a roof in Mifflin Township, get the contractor’s PA registration number: the home improvement law requires registration with the Attorney General above $5,000 a year of such work, and the number on contracts and estimates (HICPA § 3, § 6).
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.