Roof Replacement in Hummelstown, PA

Hummelstown has 2,308 homes, and half of them were standing by 1965. Below: what the code asks of a replacement here, the permit, and the town’s own records.

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.

A Pennsylvania stone-and-brick house with a new shingle roof

The rules for a reroof in Hummelstown

Permit

Ask Hummelstown first

Under 34 Pa. Code § 403.1(b)(8), alterations to a house that make no structural change are outside the state code. The borough code office can say what Hummelstown requires.

Source: 34 Pa. Code § 403.1(b)

Layers

Two layers means a tear-off

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). 69% of Hummelstown’s homes were built before 1980; many have been reroofed before.

Source: IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes)

Ice barrier

Set by the local climate table

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 borough code office in Hummelstown will know.

Source: IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes)

Checked against the code text on October 24, 2026. The state’s code edition and the rest of its rules: roof replacement in Pennsylvania.

Homes and roofs in Hummelstown

Of 2,288 occupied homes in Hummelstown, 1,242 (54%) are owner-occupied. Counting by decade, 17% before 1940, 43% before 1960, 69% before 1980 of the housing was in place, and 17% dates from 2000 on. (ACS 2020–2024.)

The housing is 56% detached houses, 7% attached single-family houses (rowhouses, twins and townhouses).

Of the 31 Dauphin County municipalities on this site, Hummelstown has the 14th largest share of homes built before 1980: 69%, against a county range of 31% to 100%.

Hummelstown and the towns around it

Place	Median built	Before 1980	Owners	Row, twin	Hail days
Hummelstown	1965	69%	54%	7%	21
South Hanover	1996	31%	71%	19%	20
Derry Township, Dauphin County	1979	51%	63%	22%	21
Lower Swatara	1983	46%	87%	14%	20
Middletown Borough	1958	78%	43%	21%	20
Swatara Township, Dauphin County	1975	58%	70%	24%	20

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 Hummelstown

NOAA’s storm reports show 21 days since 2006 with hail of at least 1 inch inside a 10-mile circle around Hummelstown, topping out at 1.75 in on June 3, 2023. The most recent was June 26, 2023.

That is more hail days than 95% of the places in the state on this site.

At the county level, Hummelstown shares Dauphin County’s record of 5 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; 56% 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; 17% here predate 1940	Sound slate can be reused (R908.5); broken slate cannot
Flat roof: EPDM or TPO	15 years	Additions and porch roofs	Seams at walls and drainage

Checking a contractor in Pennsylvania

Before signing for a roof in Hummelstown, 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 Hummelstown

Do I need a permit to replace a roof in Hummelstown?

Ask Hummelstown first. Under 34 Pa. Code § 403.1(b)(8), alterations to a house that make no structural change are outside the state code. The borough code office can say what Hummelstown requires.

Can a new roof go over the old one in Hummelstown?

When were most homes in Hummelstown built?

By the Census Bureau’s American Community Survey (2020–2024), the median home in Hummelstown was built in 1965, 69% of homes were built before 1980, 54% are owner-occupied.

How many hail days has Hummelstown had?

Hail of 1 inch or larger was reported on 21 days within 10 miles of Hummelstown 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 Hummelstown have?

What they will ask on the phone

Where the house is: the Hummelstown 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.