Permit
Local ordinance, not the state
The state code does not cover a reroof that changes no structure (34 Pa. Code § 403.1(b)(8)). So the township code office in East Nantmeal is the one to ask before work starts.
Source: 34 Pa. Code § 403.1(b)
Half of the 669 homes in East Nantmeal were built before 1975. 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
The state code does not cover a reroof that changes no structure (34 Pa. Code § 403.1(b)(8)). So the township code office in East Nantmeal is the one to ask before work starts.
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). 58% of East Nantmeal’s homes were built before 1980, so count the layers before comparing quotes.
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. Ask the township code office or the contractor what East Nantmeal’s says.
Rules as read on October 24, 2026. Code edition, permit and contract rules for the whole state: roof replacement in Pennsylvania.
Of 625 occupied homes in East Nantmeal, 564 (90%) are owner-occupied. By year built, 31% before 1940, 34% before 1960, 58% before 1980; 13% went up in 2000 or later. (ACS 2020–2024.)
By building type: 98% detached houses.
On a house built before 1940, ask what the deck is (boards or plywood) and whether slate sits under the later layers: slate can’t be roofed over.
Of the 71 Chester County municipalities on this site, East Nantmeal has the 14th largest share of homes built before 1980: 58%, against a county range of 12% to 80%.
ZIP codes: 19343
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| East Nantmeal | 1975 | 58% | 90% | 2% | 13 |
| Warwick Township, Chester County | 1966 | 75% | 88% | 4% | 13 |
| Wallace | 1985 | 42% | 94% | 1% | 13 |
| West Nantmeal | 1985 | 43% | 91% | 2% | 11 |
| Upper Uwchlan | 2000 | 12% | 92% | 22% | 13 |
| Elverson | 1996 | 28% | 71% | 36% | 8 |
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 East Nantmeal, hail of an inch or more was reported on 13 days between 2006 and 2025, the biggest stones 2 in on May 28, 2019. The most recent was July 8, 2025.
Remnants of Hurricane Ida (DR-4618, September 2021) is the latest of 5 federal storm declarations covering Chester County since 2006. (OpenFEMA.)
A report says hail fell near East Nantmeal, 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; 98% 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; 31% 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 | Where the roof meets a wall or parapet |
A contractor who does $5,000 or more of home improvement work a year must be registered with the Pennsylvania Attorney General, and the number has to be on every contract and estimate (HICPA § 3, § 6). Ask for it before anyone starts on a roof in East Nantmeal, and search it.
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)). So the township code office in East Nantmeal is the one to ask before work starts.
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). 58% of East Nantmeal’s homes were built before 1980, so count the layers before comparing quotes.
By the Census Bureau’s American Community Survey (2020–2024), the median home in East Nantmeal was built in 1975, 58% of homes were built before 1980, 90% are owner-occupied.
Hail of 1 inch or larger was reported on 13 days within 10 miles of East Nantmeal from 2006 through 2025 (NOAA Storm Prediction Center). A report means hail fell nearby, not that a roof was damaged.
A contractor who does $5,000 or more of home improvement work a year must be registered with the Pennsylvania Attorney General, and the number has to be on every contract and estimate (HICPA § 3, § 6). Ask for it before anyone starts on a roof in East Nantmeal, and search it.
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.