Permit
Lancaster’s ordinance decides
The state code does not cover a reroof that changes no structure (34 Pa. Code § 403.1(b)(8)). The city code office can say what Lancaster requires.
Source: 34 Pa. Code § 403.1(b)
Roof Replacement in Lancaster, PA
The median home in Lancaster was built in 1938; there are 23,049 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 Lancaster
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. 86% of Lancaster’s homes were built before 1980, so count the layers before comparing quotes.
Ice barrier
Set by the local climate table
IRC R905.1.2 calls for an ice barrier where Table R301.2 says so; in Pennsylvania the municipality completes that table. The contractor or the city code office in Lancaster will know.
Checked against the code text on October 24, 2026. Everything else the state requires: roof replacement in Pennsylvania.
Homes and roofs in Lancaster
49% of the occupied homes in Lancaster are lived in by their owners: 10,673 households, the people this line is for. Counting by decade, 54% before 1940, 71% before 1960, 86% before 1980 of the housing was in place, and 6% dates from 2000 on. (ACS 2020–2024.)
The housing is 12% detached houses, 52% attached single-family houses (rowhouses, twins and townhouses), 18% buildings of two to four units.
With about half of homes attached, many roofs here meet a neighbor’s roof at a party wall. Say so on the call, and ask the contractor how the new roof will be tied in where it meets the house next door.
Older houses hide their history: ask the contractor to confirm the deck (board or sheet) and every layer above it before pricing, because slate or two layers mean a full tear-off.
Of the 59 Lancaster County municipalities on this site, Lancaster has the 2nd largest share of homes built before 1980: 86%, against a county range of 27% to 87%.
Lancaster and the towns around it
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Lancaster | 1938 | 86% | 49% | 52% | 23 |
| Lancaster Township | 1968 | 63% | 68% | 34% | 22 |
| Manheim Township, Lancaster County | 1979 | 51% | 71% | 17% | 26 |
| Millersville | 1966 | 70% | 57% | 17% | 20 |
| West Lampeter | 1990 | 30% | 65% | 16% | 19 |
| East Lampeter | 1983 | 45% | 62% | 17% | 27 |
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 Lancaster
Within 10 miles of Lancaster, hail of an inch or more was reported on 23 days between 2006 and 2025, the biggest stones 1.75 in on June 10, 2008. The most recent was June 28, 2025.
That is more hail days than 98% of the places in the state on this site.
Lancaster County has had 3 federal major-disaster declarations for storms since 2006; the latest was DR-4267, Severe Winter Storm and Snowstorm (March 2016). (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 Lancaster’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; 12% 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; 54% here predate 1940 | Never a base for a new layer (R908.3.1.1); heavy |
| Flat roof: EPDM or TPO | 15 years | Low-slope roofs and rear sections (52% of homes here are attached) | Coating is not a replacement |
Checking a contractor in Pennsylvania
Before signing for a roof in Lancaster, 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 Lancaster
Does a roof replacement in Lancaster need a permit?
Lancaster’s ordinance decides. The state code does not cover a reroof that changes no structure (34 Pa. Code § 403.1(b)(8)). The city code office can say what Lancaster requires.
Do the old shingles have to come off in Lancaster?
IRC R908.3.1.1 forbids roofing over two existing layers, over slate or tile, or over a water-soaked roof. 86% of Lancaster’s homes were built before 1980, so count the layers before comparing quotes.
When were most homes in Lancaster built?
By the Census Bureau’s American Community Survey (2020–2024), the median home in Lancaster was built in 1938, 86% of homes were built before 1980, 49% are owner-occupied.
Does Lancaster get hail that damages roofs?
Hail of 1 inch or larger was reported on 23 days within 10 miles of Lancaster 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 Lancaster have?
Before signing for a roof in Lancaster, 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
- The street address in Lancaster, or at least the ZIP code
- Whether the house is detached, a twin or a rowhouse, and how many stories
- What covers the roof now and about when it went on
- The number of layers, if anyone has counted
- That you want a new roof or a full replacement, and when you want the work done
- Whether the house is in a historic district or an HOA
- That you are the owner and the one who decides
The full list: before you call.