Owens Corning roof replacement and storm repair. A free 60-point inspection is written down and sent to you. This page covers Mercersburg, plus Greencastle: 5 ZIP codes in Franklin County.
Asphalt is the Owens Corning workhorse. Metal, synthetic cedar, and synthetic slate are on the table when the house asks for them.
The default for most homes we touch.
Standing seam and panel systems when the house asks for metal.
The cedar look with the install discipline that material needs.
The slate look without the slate weight.
Every point is written down and sent to you. There is no verbal-only report.
Materials are specced for this climate, not a brochure climate.
The same company does the inspection, the tear-off, and the last shingle.
Lifetime transferable labor warranty on qualifying systems.
A certified inspector documents the roof. Every point is written down and sent to you.
We can be on site during an insurance inspection if you ask. We do not file claims or interpret your policy.
ExteriorMax installs roofing, siding, windows, gutters, doors, and decks in Mercersburg, Pennsylvania under PA178917. Maryland, Virginia, West Virginia, and Pennsylvania are authorized service areas. The business address is 6301 Ivy Ln, Suite 120, Greenbelt, MD 20770.
The ZIP codes below are the zone list that names Mercersburg, along with Greencastle. They are not a city-limit map of Mercersburg alone.
Photos on this page are examples of ExteriorMax work and the products we install. They are not a job at a specific address.
Greencastle, Mercersburg. Franklin County. Zone PA-FRANKLIN-GREENCASTLE-MERCERSBURG. ZIP codes: 17225, 17231, 17236, 17256, 17263.
From 2025-11-11 through 2026-11-11, National Weather Service severe reports for Franklin County include this headline: 23 severe storm reports in Franklin County. That is a county record. It does not mean every home in these ZIP codes experienced that weather. The estimate is based on the house, not the headline.
$0 down financing for qualified homeowners. Plans are walked at the inspection. A small deposit holds the schedule. Financing details.
These are company-wide reviews. They are not filed as Mercersburg reviews, and we do not invent a local set.
ExteriorMax did a great job on our roof installation. Crew and staff were extremely professional and very aware of our property and space issues.
Customer service is immaculate. Brian made the process so easy, including contacting our insurance company.
Yes. This page covers Mercersburg, plus Greencastle: 5 ZIP codes in Franklin County under PA178917.
Asphalt shingles, Metal roofing, Synthetic cedar, Synthetic slate. Asphalt is the Owens Corning workhorse. Metal, synthetic cedar, and synthetic slate are on the table when the house asks for them.
Inspection first, The layers underneath, Flashings, Finish and warranty.
Permit rules differ by county. ExteriorMax handles the permit and HOA packet for the job. We do not publish a separate permit fee for Mercersburg.
$0 down financing for qualified homeowners. Plans are walked at the inspection. A small deposit holds the schedule.
Also in Mercersburg: Siding in Mercersburg · Windows in Mercersburg · Gutters in Mercersburg · Doors in Mercersburg · Decks in Mercersburg.
Company-wide roofing page · What the 60-point roof inspection covers · Mercersburg overview
Greencastle roofing · Chambersburg roofing · Fort Loudon roofing · Mont Alto roofing · Path Valley roofing · Waynesboro roofing
Mercersburg, plus Greencastle. ExteriorMax installs roofing, siding, windows, gutters, doors, and decks in Mercersburg, Pennsylvania under PA178917. Maryland, Virginia, West Virginia, and Pennsylvania are authorized service areas. The business address is 6301 Ivy Ln, Suite 120, Greenbelt, MD 20770.