Fast, Reliable Roof Replacement & Installation Across Mount Lebanon
Roof replacement and installation in Mount Lebanon, PA typically runs $12,000-$45,000 depending on material and home size, with most slate restoration and full replacement projects scheduled within one to two weeks. Our crews are on Mount Lebanon streets like Washington Road, Beverly Road, and throughout the Sunset Hills neighborhood regularly, and we can usually have a technician out for inspection within 24 hours of your call.
We know these houses. Mount Lebanon’s core neighborhoods are filled with brick-and-stone Tudor Revival, Colonial Revival, and Craftsman homes built predominantly from the 1920s through the 1950s, many featuring steeply pitched roofs originally clad in Vermont or Pennsylvania slate. These aging slate systems, now 70 to 100 years old, are reaching end-of-life simultaneously. Homeowners here overwhelmingly prioritize slate repair and matching rather than replacement with asphalt, making slate-specific expertise the defining competitive differentiator for roofers working this market in a way that simply does not apply in neighboring suburbs like Bethel Park or Upper St. Clair. When you call (844) 563-1816, a live person answers, 24/7, including nights, weekends, and the middle of a storm.
Why Ridgeline Roofing Co. Is Mount Lebanon’s Preferred Roof Replacement & Installation Company
Ridgeline Roofing Co. has served homeowners since 1984. That is over 42 years of standing behind local roofs, not chasing storms. We hire local crews, train apprentices into journeymen, and plan to be in Mount Lebanon in thirty years, not thirty days.
Our reputation here is built on one thing: we do what we say. The 90-Day Done Right Promise means if it is not right, we come back and make it right, no paperwork, no arguing, no runaround. Pete Navarro, who leads Ridgeline Roofing Co., has insisted on this standard since day one.
Mount Lebanon homeowners call us because they have lived through the alternative. They remember the last contractor who let them down. They are not looking for the cheapest bid but for a square deal they will never have to revisit. Our technicians are background-checked and uniformed, and they document every inspection with photos taken from your actual roof, not a scary speech in the driveway.
We also understand the local urgency. Pittsburgh’s South Hills location means Mount Lebanon absorbs heavy freeze-thaw cycling each winter, with temperatures swinging above and below freezing dozens of times per season. A pattern that cracks brittle aged slate, lifts copper valley flashing, and drives ice dams along the deep eave overhangs characteristic of Tudor-style homes. Annual snowfall averaging 30-40 inches compounds the load stress on steep rooflines that were designed for it but are now supported by century-old framing. When a slate tile cracks in January, you cannot wait two weeks for someone to drive up from Florida.
Our Roof Replacement & Installation Services in Mount Lebanon
Full Roof Replacement
A full roof replacement in Mount Lebanon is rarely a simple tear-off. On streets like Lenox Road and throughout the Sunset Hills area, we routinely find that homeowners have patched failing slate with mismatched colors or wrong thicknesses over the decades. A patchwork history that we can use to date the roof, identify the original quarry region, and source the correct replacement slate. This is a conversation that resonates deeply with Mount Lebanon’s preservation-minded, high-equity homeowner base. When full replacement is necessary, we handle everything from structural assessment to final cleanup, and most jobs are completed in a single visit once materials are on site.

Tile Roofing
Mount Lebanon’s affluent early-20th-century housing stock retains an unusually high concentration of original slate and clay-tile roofs. Homeowners here overwhelmingly prioritize slate repair and matching rather than replacement with asphalt. We source matching Pennsylvania and Vermont slate, repair copper flashings, and advise on genuine restoration versus full replacement. Tile roofing in Mount Lebanon is not a commodity purchase. It is a preservation decision, and we treat it that way.

Metal Roofing
For Mount Lebanon homeowners moving away from slate, metal roofing offers exceptional longevity on steep Tudor and Colonial Revival pitches. We are authorized installers of GAF and CertainTeed metal systems, and we can match the standing-seam profile to the architectural character of your home. Metal handles Mount Lebanon’s snow load better than most materials, shedding powder and ice rather than absorbing freeze-thaw stress. The price on the estimate is the price on the invoice. No surprises.

Asphalt Shingles
Not every Mount Lebanon roof needs slate or metal. For garage roofs, rear additions, and homes where budget or timeline demands it, we install Owens Corning Duration and Atlas asphalt shingle systems. On a Lenox Road Tudor Revival, we found a slate roof patched with four different colors of slate over 50 years. We sourced Pennsylvania slate to match the original quarry, replaced the copper valleys, and installed Owens Corning Duration cool shingles on the lower porch, keeping the historic look while solving leaks. Asphalt done right is asphalt done once.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Mount Lebanon
We install products from seven manufacturer brands: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For Mount Lebanon homeowners, this means we stock local parts and can source matching materials without the delays that plague contractors who rely on distant warehouses. We are authorized installers for GAF and CertainTeed, which matters for warranty coverage on your slate restoration or metal replacement. Fast turnaround starts with having the right materials on hand, not making excuses.
Common Roof Replacement & Installation Problems We See in Mount Lebanon Homes
- Freeze-thaw cycling cracks brittle Vermont slate. Pittsburgh’s South Hills location means Mount Lebanon absorbs heavy freeze-thaw cycling each winter, with temperatures swinging above and below freezing dozens of times per season. This pattern cracks brittle aged slate, causing hidden leaks under snow loads on steep Tudor rooflines.
- Mismatched slate patches accelerate deterioration. On streets like Lenox Road and throughout the Sunset Hills area, roofers routinely find that homeowners have patched failing slate with mismatched colors or wrong thicknesses over the decades. A patchwork history that looks bad and performs worse, because differing thicknesses create uneven load distribution and water channels.
- Century-old copper flashings lift and fail. Century-old copper flashings around chimneys and valleys lift during temperature swings, leading to ice dams and interior damage. This is not a caulk problem. It is a flashing replacement problem, and it requires a crew that understands how these original systems were built.
- Ice dams form on deep eave overhangs. The deep eave overhangs characteristic of Tudor-style homes in Mount Lebanon collect snow and create ice dams when attic ventilation is inadequate or when copper gutters back up. We address the cause, not just the symptom.
Pricing for Roof Replacement & Installation in Mount Lebanon, PA
A typical asphalt shingle roof replacement in Mount Lebanon runs $12,000-$22,000 for a standard 2,000-square-foot home. Slate restoration and repair projects range $8,500-$18,000 depending on the extent of matching required and copper flashing replacement. Full slate replacement with new Pennsylvania or Vermont slate can run $35,000-$45,000 or more for complex Tudor rooflines. Metal roofing systems fall in the $22,000-$38,000 range.
What affects cost: roof pitch and accessibility, the condition of underlying decking, whether original slate matching is required, copper or lead flashing replacement, and the extent of ice-damage repair to fascia and soffit. We provide no-hassle upfront pricing. The number on the estimate is the number on the invoice. Call (844) 563-1816 for an exact quote. Estimates are free.
We Also Serve Cities Near Mount Lebanon
Our Roof Replacement & Installation team also works in Castle Shannon, Dormont, Upper Saint Clair, and Bethel Park. We have been the Roof Replacement & Installation in Mount Lebanon that homeowners trust for over 42 years, and we bring the same standard to every neighboring community. Wherever you are in the South Hills, the same live-answer phone, same background-checked uniformed technicians, same 90-Day Done Right Promise.
Serving Mount Lebanon, PA - Our Local Coverage Area
We’re based in the Mount Lebanon area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Roof Replacement & Installation in Mount Lebanon
If less than 25 percent of your slate is cracked, slipping, or missing, and the underlying decking is sound, repair with matching slate is usually the better investment. We inspect the roof deck from inside the attic, check for water staining on rafters, and photograph every damaged area so you can see what we see. On a Lenox Road Tudor Revival, we found a slate roof patched with four different colors of slate over 50 years. We sourced Pennsylvania slate to match the original quarry, replaced the copper valleys, and installed Owens Corning Duration cool shingles on the lower porch, keeping the historic look while solving leaks. Call (844) 563-1816 to schedule a photo-documented inspection.
No. We do not install asphalt shingles over slate. The weight, the uneven substrate, and the nail penetration through slate create immediate and long-term failure risks. If your slate is beyond repair, we remove it properly, assess and replace damaged decking, and install the new system on a clean, sound surface. Done right, and if it is not, we make it right. Call (844) 563-1816 for a free assessment of your options.
We primarily use GAF and CertainTeed standing-seam metal systems for Mount Lebanon Tudor Revival homes, with color matching to existing trim and masonry. Both manufacturers offer profiles that complement early-20th-century architecture without looking like an agricultural outbuilding. We are authorized installers for both brands, which protects your warranty coverage. Call (844) 563-1816 to see samples and get an exact quote.
Mount Lebanon’s South Hills location means temperatures swing above and below freezing dozens of times each winter. Water enters hairline cracks in slate, expands when it freezes, and widens the crack with every cycle. By late February, a single cracked slate can channel water into the decking and insulation. Annual snowfall averaging 30-40 inches compounds the load stress on steep rooflines that were designed for it but are now supported by century-old framing. We inspect for this damage in fall and repair before winter. Call (844) 563-1816 to schedule pre-winter service.
Ice dams on steep Tudor rooflines in Mount Lebanon are usually caused by lifted copper flashing, inadequate attic ventilation, or backed-up copper gutters, not by the slope itself. Do not climb up to chip at them. The risk of falling on ice is real, and you will damage slate or gutters in the process. Our technicians are trained for steep-roof work and carry proper fall protection. We identify the source, repair flashing or ventilation as needed, and clear gutters safely. Call (844) 563-1816 for same-week service during ice-dam season.
Written by Pete Navarro, Owner at Ridgeline Roofing Co., serving Mount Lebanon since 1984.