Permit
Ambler’s ordinance decides
The state code does not cover a reroof that changes no structure (34 Pa. Code § 403.1(b)(8)). The borough code office can say what Ambler requires.
Source: 34 Pa. Code § 403.1(b)
Roof Replacement in Ambler, PA
Ambler has 2,864 homes, and half of them were standing by 1954. What the code requires when that roof is replaced, and who signs off, is below.
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 Ambler
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). With 84% of Ambler’s homes were built before 1980, ask what is under the newest layer.
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 borough code office in Ambler will know.
Checked against the code text on October 24, 2026. Code edition, permit and contract rules for the whole state: roof replacement in Pennsylvania.
Homes and roofs in Ambler
50% of the occupied homes in Ambler are lived in by their owners: 1,340 households, the people this line is for. Counting by decade, 35% before 1940, 65% before 1960, 84% before 1980 of the housing was in place, and 10% dates from 2000 on. (ACS 2020–2024.)
The housing is 32% detached houses, 29% attached single-family houses (rowhouses, twins and townhouses), 14% buildings of two to four units.
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 61 Montgomery County municipalities on this site, Ambler has the 7th largest share of homes built before 1980: 84%, against a county range of 17% to 98%.
Ambler and the towns around it
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Ambler | 1954 | 84% | 50% | 29% | 17 |
| Upper Dublin | 1971 | 62% | 84% | 16% | 13 |
| Lower Gwynedd | 1979 | 52% | 78% | 17% | 14 |
| Whitpain | 1983 | 41% | 77% | 24% | 15 |
| Whitemarsh | 1973 | 58% | 74% | 15% | 16 |
| Springfield Township, Montgomery County | 1954 | 83% | 83% | 14% | 16 |
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 Ambler
Since 2006 the National Weather Service has logged hail of 1 inch or larger on 17 separate days within 10 miles of Ambler; the largest was 1.75 in on June 6, 2023. The most recent was May 3, 2025.
That is more hail days than 79% of the places in the state on this site.
Montgomery County has had 6 federal major-disaster declarations for storms since 2006; the latest was 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
Lifespans come from HUD’s capital-needs table, not from a brochure. 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; 32% 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 | Roofs that will carry solar later | A complete standing-seam system may go over the old roof (R908.3.1) |
| Slate | 75 years | Older houses; 35% 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 (29% of homes here are attached) | Coating is not a replacement |
Checking a contractor in Pennsylvania
A contractor who does $5,000 or more of home improvement work a year must be registered with the Pennsylvania Attorney General, and the number has to be on every contract and estimate (HICPA § 3, § 6). Ask for it before anyone starts on a roof in Ambler, and search it.
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 Ambler
Does a roof replacement in Ambler need a permit?
Ambler’s ordinance decides. The state code does not cover a reroof that changes no structure (34 Pa. Code § 403.1(b)(8)). The borough code office can say what Ambler requires.
Do the old shingles have to come off in Ambler?
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). With 84% of Ambler’s homes were built before 1980, ask what is under the newest layer.
When were most homes in Ambler built?
By the Census Bureau’s American Community Survey (2020–2024), the median home in Ambler was built in 1954, 84% of homes were built before 1980, 50% are owner-occupied.
How many hail days has Ambler had?
Hail of 1 inch or larger was reported on 17 days within 10 miles of Ambler 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 Ambler have?
A contractor who does $5,000 or more of home improvement work a year must be registered with the Pennsylvania Attorney General, and the number has to be on every contract and estimate (HICPA § 3, § 6). Ask for it before anyone starts on a roof in Ambler, and search it.
What they will ask on the phone
- The street address in Ambler, or at least the ZIP code
- How many stories the house has, and whether it is detached or attached
- What covers the roof now and about when it went on
- How many layers are on it, if you know
- Your timing for a complete replacement
- 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.