Roof Replacement in Locust, PA

Locust has 660 homes, and half of them were standing by 1971. 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.

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

The rules for a reroof in Locust

Permit

Local ordinance, not the state

Pennsylvania’s code leaves residential alterations without structural change to local ordinance (34 Pa. Code § 403.1(b)(8)). The township code office can say what Locust requires.

Source: 34 Pa. Code § 403.1(b)

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). 63% of Locust’s homes were built before 1980, so count the layers before comparing quotes.

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

Ice barrier

Locust’s climate table decides

IRC R905.1.2 calls for an ice barrier where Table R301.2 says so; in Pennsylvania the municipality completes that table. Ask the township code office or the contractor what Locust’s says.

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

Rules as read on October 24, 2026. Everything else the state requires: roof replacement in Pennsylvania.

Homes and roofs in Locust

Owners live in 447 of Locust’s occupied homes, or 83%. By year built, 32% before 1940, 43% before 1960, 63% before 1980; 14% went up in 2000 or later. (ACS 2020–2024.)

By building type: 85% detached houses, 12% manufactured homes.

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 22 Columbia County municipalities on this site, Locust has the 10th largest share of homes built before 1980: 63%, against a county range of 42% to 93%.

ZIP codes: 17820

Locust and the towns around it

Place	Median built	Before 1980	Owners	Row, twin	Hail days
Locust	1971	63%	83%	0%	6
Cleveland	1973	63%	95%	0%	6
Mount Carmel Borough	1938	88%	77%	53%	6
Mount Carmel Township	1953	69%	88%	38%	6
Catawissa	1946	90%	57%	5%	6
Ashland Borough, Schuylkill County	1938	93%	72%	51%	5

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 Locust

NOAA’s storm reports show 6 days since 2006 with hail of at least 1 inch inside a 10-mile circle around Locust, topping out at 2.25 in on May 22, 2014. The most recent was July 3, 2014.

That is fewer than most places in the state on this site (median 12 days).

Federal major-disaster declarations for storms in Columbia County since 2006: 2, most recently DR-4408, Severe Storms and Flooding, declared November 2018. (OpenFEMA.)

A report says hail fell near Locust, 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; 85% 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	Standing seam that carries its own loads can skip the tear-off (R908.3.1)
Slate	75 years	Older houses; 32% here predate 1940	Sound slate can be reused (R908.5); broken slate cannot
Flat roof: EPDM or TPO	15 years	Porches, additions, low-slope rears	Where the roof meets a wall or parapet

Checking a contractor in Pennsylvania

Before signing for a roof in Locust, 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 Locust

Does a roof replacement in Locust need a permit?

Local ordinance, not the state. Pennsylvania’s code leaves residential alterations without structural change to local ordinance (34 Pa. Code § 403.1(b)(8)). The township code office can say what Locust requires.

Is a roof-over allowed in Locust, or is it a tear-off?

How old are the houses in Locust?

By the Census Bureau’s American Community Survey (2020–2024), the median home in Locust was built in 1971, 63% of homes were built before 1980, 83% are owner-occupied.

How many hail days has Locust had?

Hail of 1 inch or larger was reported on 6 days within 10 miles of Locust 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 Locust?

What they will ask on the phone

Where the house is: the Locust 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
Whether there is one layer or more, if you know
That you want a new roof or a full replacement, and when you want the work done
Any historic-district or HOA rules on the house in Locust
That the house is yours and the decision is yours

The full list: before you call.