Permit
Ask Glen Rock first
Pennsylvania’s code leaves residential alterations without structural change to local ordinance (34 Pa. Code § 403.1(b)(8)). The borough code office can say what Glen Rock requires.
Source: 34 Pa. Code § 403.1(b)
Roof Replacement in Glen Rock, PA
Glen Rock has 868 homes, and half of them were standing by 1955. 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 Glen Rock
Layers
One old layer can stay; two cannot
On a roof that already carries two layers, or slate or tile, the code allows no recover: it is a tear-off (IRC R908.3.1.1). 71% of Glen Rock’s homes were built before 1980, so count the layers before comparing quotes.
Ice barrier
Glen Rock’s climate table decides
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). Glen Rock’s answer is with the borough code office.
Rules as read on October 24, 2026. The state’s code edition and the rest of its rules: roof replacement in Pennsylvania.
Homes and roofs in Glen Rock
Of 818 occupied homes in Glen Rock, 449 (55%) are owner-occupied. By year built, 39% before 1940, 55% before 1960, 71% before 1980; 12% went up in 2000 or later. (ACS 2020–2024.)
By building type: 53% detached houses, 16% attached single-family houses (rowhouses, twins and townhouses), 18% buildings of two to four units.
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 57 York County municipalities on this site, Glen Rock has the 13th largest share of homes built before 1980: 71%, against a county range of 25% to 98%.
Glen Rock and the towns around it
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Glen Rock | 1955 | 71% | 55% | 16% | 14 |
| Springfield Township, York County | 1987 | 38% | 91% | 14% | 16 |
| Shrewsbury Borough | 1986 | 38% | 80% | 8% | 14 |
| Shrewsbury Township | 1983 | 45% | 86% | 8% | 13 |
| Codorus | 1975 | 65% | 85% | 3% | 13 |
| New Freedom | 1989 | 25% | 91% | 10% | 12 |
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.
Storm record around Glen Rock
NOAA’s storm reports show 14 days since 2006 with hail of at least 1 inch inside a 10-mile circle around Glen Rock, topping out at 2 in on August 2, 2008. The most recent was April 15, 2024.
Federal major-disaster declarations for storms in York County since 2006: 3, most recently DR-4618, Remnants of Hurricane Ida, declared September 2021. (OpenFEMA.)
A report says hail fell near Glen Rock, not that it damaged a 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; 53% 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; 39% here predate 1940 | Sound slate can be reused (R908.5); broken slate cannot |
| Flat roof: EPDM or TPO | 15 years | Low-slope roofs and rear sections (16% of homes here are attached) | Seams at walls and drainage |
Checking a contractor in Pennsylvania
Before signing for a roof in Glen Rock, 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.
Questions about a new roof in Glen Rock
Do I need a permit to replace a roof in Glen Rock?
Ask Glen Rock first. Pennsylvania’s code leaves residential alterations without structural change to local ordinance (34 Pa. Code § 403.1(b)(8)). The borough code office can say what Glen Rock requires.
Can a new roof go over the old one in Glen Rock?
On a roof that already carries two layers, or slate or tile, the code allows no recover: it is a tear-off (IRC R908.3.1.1). 71% of Glen Rock’s homes were built before 1980, so count the layers before comparing quotes.
How old are the houses in Glen Rock?
By the Census Bureau’s American Community Survey (2020–2024), the median home in Glen Rock was built in 1955, 71% of homes were built before 1980, 55% are owner-occupied.
Does Glen Rock get hail that damages roofs?
Hail of 1 inch or larger was reported on 14 days within 10 miles of Glen Rock from 2006 through 2025 (NOAA Storm Prediction Center). A report means hail fell nearby, not that a roof was damaged.
How do I check a roofing contractor in Glen Rock?
Before signing for a roof in Glen Rock, 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 Glen Rock address or ZIP
- How many stories the house has, and whether it is detached or attached
- The roof you have today, shingle, metal, slate, tile or flat, and its rough age
- How many layers are on it, if you know
- That the job is a full replacement or a new roof, and your timing
- Any historic-district or HOA rules on the house in Glen Rock
- That you own the home and decide on the roof
The full list: before you call.