The median home in Newtown Township was built in 1968; there are 6,299 of them. 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
Pennsylvania’s code leaves residential alterations without structural change to local ordinance (34 Pa. Code § 403.1(b)(8)). Whether Newtown 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
IRC R908.3.1.1 forbids roofing over two existing layers, over slate or tile, or over a water-soaked roof. With 65% of Newtown Township’s homes were built before 1980, ask what is under the newest layer.
Ice barrier
Whether an eave membrane is a code item depends on the climate table the municipality filled in when it adopted the code (IRC R905.1.2, Table R301.2). The contractor or the township code office in Newtown Township will know.
Rules as read on October 24, 2026. The state’s code edition and the rest of its rules: roof replacement in Pennsylvania.
78% of the occupied homes in Newtown Township are lived in by their owners: 4,733 households, the people this line is for. By year built, 8% before 1940, 38% before 1960, 65% before 1980; 26% went up in 2000 or later. (ACS 2020–2024.)
By building type: 62% detached houses, 14% attached single-family houses (rowhouses, twins and townhouses).
Of the 48 Delaware County municipalities on this site, Newtown Township has the 39th largest share of homes built before 1980: 65%, against a county range of 20% to 98%.
ZIP codes: 19073
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Newtown Township, Delaware County | 1968 | 65% | 78% | 14% | 15 |
| Radnor | 1962 | 77% | 66% | 9% | 17 |
| Easttown | 1968 | 65% | 88% | 11% | 14 |
| Marple | 1962 | 75% | 84% | 9% | 16 |
| Upper Providence Township, Delaware County | 1967 | 70% | 74% | 7% | 14 |
| Edgmont | 1991 | 20% | 78% | 22% | 14 |
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.
NOAA’s storm reports show 15 days since 2006 with hail of at least 1 inch inside a 10-mile circle around Newtown Township, topping out at 1.75 in on June 6, 2023. The most recent was April 4, 2025.
Remnants of Hurricane Ida (DR-4618, September 2021) is the latest of 3 federal storm declarations covering Delaware County since 2006. (OpenFEMA.)
A report says hail fell near Newtown 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; 62% 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; 8% 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 | Where the roof meets a wall or parapet |
Before signing for a roof in Newtown 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.
Ask Newtown Township first. Pennsylvania’s code leaves residential alterations without structural change to local ordinance (34 Pa. Code § 403.1(b)(8)). Whether Newtown Township wants a permit is in its own ordinance; ask the township code office before the old roof comes off.
IRC R908.3.1.1 forbids roofing over two existing layers, over slate or tile, or over a water-soaked roof. With 65% of Newtown 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 Newtown Township was built in 1968, 65% of homes were built before 1980, 78% are owner-occupied.
Hail of 1 inch or larger was reported on 15 days within 10 miles of Newtown 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 Newtown 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.