Permit
Ask Aston first
Under 34 Pa. Code § 403.1(b)(8), alterations to a house that make no structural change are outside the state code. The township code office can say what Aston requires.
Source: 34 Pa. Code § 403.1(b)
Roof Replacement in Aston, PA
The median home in Aston was built in 1970; there are 6,341 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.
Call (833) 781-1806 Replacement and new roofs only · homeowners
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.
The rules for a reroof in Aston
Layers
Two layers means a tear-off
IRC R908.3.1.1 forbids roofing over two existing layers, over slate or tile, or over a water-soaked roof. With 66% of Aston’s homes were built before 1980, ask what is under the newest layer.
Ice barrier
Set by the local climate table
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 Aston’s says.
Checked against the code text on October 24, 2026. Code edition, permit and contract rules for the whole state: roof replacement in Pennsylvania.
Homes and roofs in Aston
Owners live in 5,615 of Aston’s occupied homes, or 91%. Counting by decade, 35% before 1960, 66% before 1980 of the housing was in place, and 11% dates from 2000 on. (ACS 2020–2024.)
The housing is 73% detached houses, 15% attached single-family houses (rowhouses, twins and townhouses), 5% buildings of two to four units.
Of the 48 Delaware County municipalities on this site, Aston has the 38th largest share of homes built before 1980: 66%, against a county range of 20% to 98%.
ZIP codes: 19014
Aston and the towns around it
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Aston | 1970 | 66% | 91% | 15% | 15 |
| Upper Chichester | 1974 | 59% | 73% | 12% | 15 |
| Chester Heights | 1987 | 34% | 76% | 51% | 15 |
| Brookhaven | 1970 | 73% | 85% | 16% | 16 |
| Chester Township | 1972 | 73% | 55% | 77% | 15 |
| Middletown Township, Delaware County | 1977 | 54% | 75% | 14% | 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.
Hail and storms near Aston
Since 2006 the National Weather Service has logged hail of 1 inch or larger on 15 separate days within 10 miles of Aston; the largest was 2.5 in on May 22, 2014. The most recent was April 4, 2025.
At the county level, Aston shares Delaware County’s record of 3 storm disaster declarations since 2006, the newest DR-4618 (Remnants of Hurricane Ida, September 2021). (OpenFEMA.)
Storm reports are what observers logged, not a measure of damage to any roof. When wind or hail damage means a new roof.
What goes on the roof next
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; 73% 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 | A complete standing-seam system may go over the old roof (R908.3.1) |
| Slate | 75 years | Older and historic houses | Sound slate can be reused (R908.5); broken slate cannot |
| Flat roof: EPDM or TPO | 15 years | Low-slope roofs and rear sections (15% of homes here are attached) | Seams at walls and drainage |
Checking a contractor in Pennsylvania
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 Aston, and search it.
Contracts, deposits and the right to cancel: checking a roofing contractor. What moves the price: new roof cost in Pennsylvania.
Questions about a new roof in Aston
Does a roof replacement in Aston need a permit?
Ask Aston first. Under 34 Pa. Code § 403.1(b)(8), alterations to a house that make no structural change are outside the state code. The township code office can say what Aston requires.
Is a roof-over allowed in Aston, or is it a tear-off?
IRC R908.3.1.1 forbids roofing over two existing layers, over slate or tile, or over a water-soaked roof. With 66% of Aston’s homes were built before 1980, ask what is under the newest layer.
When were most homes in Aston built?
By the Census Bureau’s American Community Survey (2020–2024), the median home in Aston was built in 1970, 66% of homes were built before 1980, 91% are owner-occupied.
Does Aston get hail that damages roofs?
Hail of 1 inch or larger was reported on 15 days within 10 miles of Aston from 2006 through 2025 (NOAA Storm Prediction Center). A report means hail fell nearby, not that a roof was damaged.
What license or registration should a roofer in Aston have?
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 Aston, and search it.
What they will ask on the phone
- Where the house is: the Aston address or ZIP
- One story or two (or more), detached or attached
- The roof you have today, shingle, metal, slate, tile or flat, and its rough age
- Whether there is one layer or more, if you know
- That the job is a full replacement or a new roof, and your timing
- Whether the house is in a historic district or an HOA
- That you own the home and decide on the roof
The full list: before you call.