Permit
Delaware Township’s ordinance decides
The state code does not cover a reroof that changes no structure (34 Pa. Code § 403.1(b)(8)). The township code office can say what Delaware Township requires.
Source: 34 Pa. Code § 403.1(b)
Roof Replacement in Delaware Township, Northumberland County, PA
The median home in Delaware Township was built in 1979; there are 1,704 of them. 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.
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 Delaware Township
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. 52% of Delaware Township’s homes were built before 1980, so count the layers before comparing quotes.
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. Delaware Township’s answer is with the township code office.
Checked against the code text on October 24, 2026. Everything else the state requires: roof replacement in Pennsylvania.
Homes and roofs in Delaware Township
Owners live in 1,261 of Delaware Township’s occupied homes, or 88%. Counting by decade, 6% before 1940, 25% before 1960, 52% before 1980 of the housing was in place, and 18% dates from 2000 on. (ACS 2020–2024.)
The housing is 79% detached houses, 13% manufactured homes.
Of the 23 Northumberland County municipalities on this site, Delaware Township has the 21st largest share of homes built before 1980: 52%, against a county range of 51% to 97%.
ZIP codes: 17730 · 17749 · 17777
Delaware Township and the towns around it
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Delaware Township, Northumberland County | 1979 | 52% | 88% | 1% | 10 |
| Watsontown | 1952 | 87% | 54% | 11% | 9 |
| Lewis Township, Northumberland County | 1976 | 60% | 90% | 2% | 12 |
| Montgomery Borough | 1938 | 90% | 65% | 4% | 13 |
| Gregg | 1972 | 68% | 80% | 5% | 12 |
| Turbot | 1971 | 68% | 93% | 1% | 9 |
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 Delaware Township
Within 10 miles of Delaware Township, hail of an inch or more was reported on 10 days between 2006 and 2025, the biggest stones 1.75 in on July 18, 2016. The most recent was July 24, 2023.
Northumberland County has had 1 federal major-disaster declaration for storms since 2006; the latest was DR-1649, Severe Storms, Flooding, and Mudslides (June 2006). (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
HUD’s useful-life figures are for planning; a warranty is a separate promise. For Delaware Township’s houses: 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 | Low pitches and long runs | A complete standing-seam system may go over the old roof (R908.3.1) |
| Slate | 75 years | Older houses; 6% here predate 1940 | Never a base for a new layer (R908.3.1.1); heavy |
| Flat roof: EPDM or TPO | 15 years | Additions and porch roofs | Coating is not a replacement |
Checking a contractor in Pennsylvania
Before signing for a roof in Delaware 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).
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 Delaware Township
Does a roof replacement in Delaware Township need a permit?
Delaware Township’s ordinance decides. The state code does not cover a reroof that changes no structure (34 Pa. Code § 403.1(b)(8)). The township code office can say what Delaware Township requires.
Do the old shingles have to come off in Delaware Township?
IRC R908.3.1.1 forbids roofing over two existing layers, over slate or tile, or over a water-soaked roof. 52% of Delaware Township’s homes were built before 1980, so count the layers before comparing quotes.
When were most homes in Delaware Township built?
By the Census Bureau’s American Community Survey (2020–2024), the median home in Delaware Township was built in 1979, 52% of homes were built before 1980, 88% are owner-occupied.
Does Delaware Township get hail that damages roofs?
Hail of 1 inch or larger was reported on 10 days within 10 miles of Delaware Township 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 Delaware Township have?
Before signing for a roof in Delaware 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).
What they will ask on the phone
- Where the house is: the Delaware Township address or ZIP
- The number of stories, and whether the house stands alone
- What is on the roof now (asphalt shingles, metal, slate, tile, or a flat membrane) and roughly how old it is
- 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 the house is yours and the decision is yours
The full list: before you call.