Flat and low-slope roofing contractors in Greensburg, PA

5 Greensburg roofing companies list flat and low-slope roofs on their website. Each one has a working phone and a live website. Call them direct. Flat and low-slope roofs in other cities.

Roofers that list flat and low-slope roofs, A to Z

  1. Commercial Roof USA

    Greensburg, PA

    Low-slope and flat roof systems, slate too, from a family-owned firm. Commercial roofing is the core, with homeowners served as well.

    • Family owned
  2. Cousins Roofing, Siding & Decks - Greensburg, PA

    5.0 out of 54 reviews on Google Maps

    Greensburg, PASince 2022

    Ventilation, skylights and roof maintenance, with decks, remodeling and siding repair near Bethel Park and Allison Park.

    • Family owned
    • Free inspection
    • Financing
    • Warranty

    Also serves Bethel Park, McMurray, Allison Park +5

  3. T. Harrer Construction, LLC

    5.0 out of 541 reviews on Google Maps

    Greensburg, PASince 2008

    Wood shake and slate roofs, plus remodeling and doors. Family-owned, with emergency service and a workmanship warranty.

    • Family owned
    • Free inspection
    • Emergency service
    • Warranty
  4. Top Notch Roofing Solutions

    5.0 out of 582 reviews on Google Maps

    Greensburg, PASince 2021

    Flat and metal roofs, storm repairs and gutter guards, plus doors and windows. Family-owned with financing, in Westmoreland County.

    • Family owned
    • Free inspection
    • Financing

    Also serves Pittsburgh

  5. Whalen Exteriors

    5.0 out of 5145 reviews on Google Maps

    Greensburg, PASince 1982

    Roof coatings and flat roofs for apartments, HOAs and homes. Gutter guards, siding and financing near Murrysville and Arnold.

    • Free inspection
    • Financing
    • Warranty

    Also serves Murrysville, Lower Burrell, Arnold +6

About flat and low-slope roofs

Flat and low-slope roofs do not shed water the way a pitched roof does, so the membrane and its seams do all the work. The common choices are TPO and PVC single-ply membranes, EPDM rubber, modified bitumen, and coatings that extend the life of a sound roof. Ponding water, blocked drains and failed seams cause most leaks. A flat roof needs a look every year or two.

What to ask a contractor

  • Which membrane do you recommend for my roof, and why?
  • How will you deal with ponding water and the drains?
  • Are the seams heat-welded or glued, and how long is the seam warranty?
  • Can the existing roof be coated instead of replaced?

Guide: Roof repair or replacement: how to decideGuide: How much does a new roof cost?

Planning roofing work in Greensburg

Before choosing a company, read the roofing permit and contractor questions for Greensburg and the Pennsylvania roofing license and insurance reference. Check the source’s jurisdiction and project scope for your address.

The roofing market in Greensburg

Competition

3.6 roofers per 10,000 homes

About 60 roofing businesses serve Westmoreland County, 16 with employees and about 44 sole proprietors. We list 11 with a working phone.

Pennsylvania median: 5.2 per 10,000 homes. Fewer roofers per home than most Pennsylvania metros.

Wages

$25.17 an hour, median

What a roofer earns in the Pittsburgh metro. The top ten percent earn over $36.22 an hour.

Pennsylvania median: $26.79. United States: $26.65.

Material prices

+3.9% asphalt shingles, 12 months

National producer price index. Up 50 percent since 2020. The same line on every city.

Building code

2021 IRC with Pennsylvania amendments statewide

FEMA lists Greensburg as having a building code, but an older edition. Confirm roof permit requirements with the building department responsible for your address and scope of work. Agree with your contractor who will obtain any required permit and arrange inspections before work begins.

Pennsylvania’s Uniform Construction Code applies statewide.

Sources: Census County Business Patterns 2023 and Nonemployer Statistics 2024 (roofing share estimated), ACS housing units 2024, BLS Occupational Employment and Wage Statistics May 2025, BLS Producer Price Index Aug 2026, pittsburghpa.gov and FEMA Building Code Adoption Tracking Jun 2024. Compiled Oct 13, 2026. Compare Pennsylvania metros →

The service comes from the company’s own website, or from the owner of a claimed profile.