Fast, Reliable Roof Replacement & Installation Across Cohasset
A full roof replacement on a typical Cohasset home runs $18,000-$45,000 depending on material and complexity, with most asphalt shingle jobs completed in 2-3 days and specialty slate or metal projects taking 5-10 days. Our Roof Replacement & Installation team has served Cohasset since 1984, and we keep crews staged to reach any address in the 02025 zip code within 45 minutes of your call. You can reach us any hour at (844) 563-1816 - a live person answers, never a machine.
Cohasset is not a town where standard practice suffices. The homes here - Georgian Revivals on Jerusalem Road, Victorians along South Main Street, the early-20th-century estates dotting the harbor - carry roofs that were built to last a century, with materials and methods that most contractors today have never handled. We have. Pete Navarro started this company in 1984, and we’ve spent four decades learning what holds on an exposed Atlantic bluff and what washes away with the next nor’easter.
Why Ridgeline Roofing Co. Is Cohasset’s Preferred Roof Replacement & Installation Company
We are not storm chasers. We are not the lowest bid from a truck with out-of-state plates. We are a company that hires from the South Shore, trains apprentices into journeymen, and plans to be here when your next roof needs attention in thirty years. That matters in Cohasset, where a roof is not just shelter - it is part of the character of a home that has stood for generations.
Our reputation here is built on jobs like the one on Jerusalem Road: a Georgian Revival with original copper standing-seam valleys and chimney flashing nearly eaten through by salt spray. Rather than tear it all off and start fresh, we custom-fabricated replacement copper sections in our shop and matched the original seam profile. The home kept its historic character. The owner got a roof that would survive the next winter. That is how we work.
Every inspection we perform is photo-documented from your actual roof, not the driveway. Our technicians are background-checked, uniformed, and trained to spot the failure modes that repeat in Cohasset: salt-corroded fasteners on oceanfront properties, ice-dam damage behind slate at complex valleys, galvanic corrosion where incompatible metals meet. We show you what we find. We explain what it means. Then we give you a written estimate with the same number that will appear on your invoice.
Our 90-Day Done Right Promise applies to every job: if it is not right, we come back and make it right. No paperwork to file, no argument, no runaround. We stand behind our work the same way we have since 1984.
Our Roof Replacement & Installation Services in Cohasset
Full Roof Replacement
A full replacement in Cohasset is rarely straightforward. The town’s housing stock skews toward large, older New England Colonials and Victorians with complex rooflines - steep pitches, multiple dormers, wide overhangs - many still carrying original slate or cedar shake that has reached the end of its service life. We handle the tear-off, sheathing inspection, and installation with crews experienced in working around the intricate geometries that standard suburban contractors avoid. For homes on the oceanfront bluffs, we upgrade every specification: heavier-gauge copper or stainless flashing, ring-shank fasteners throughout, wider sealing margins at all penetrations. Standard residential specs fail here within a few seasons. We have seen it. We do not let it happen on our jobs.
New Construction Roofing
New builds in Cohasset, whether on ledge overlooking the harbor or set back along Beechwood Street, demand roofing that matches the town’s architectural expectations. We work with builders and homeowners to specify materials that will endure the full nor’easter exposure - not just the first winter, but the twenty-fifth. Our crews coordinate with framers and electricians to ensure proper ventilation, especially critical given Cohasset’s chronic ice-dam conditions in historically under-insulated designs. We install to manufacturer specifications for warranty coverage, and we document every stage for the homeowner’s records.
Asphalt Shingle Installation
For Cohasset homeowners seeking durability at a practical cost, architectural asphalt shingles from GAF, CertainTeed, or Atlas offer 25-50 year lifespans with proper installation. We specify algae-resistant granules for the humid coastal environment and install synthetic underlayment rated for the wind uplift that open-ledge exposure produces. A typical asphalt replacement on a 2,500-square-foot Cohasset Colonial runs $18,000-$28,000 including tear-off, disposal, and upgraded ice-and-water shield at eaves and valleys. Most jobs finish in two days. We do not substitute materials. What we specify is what arrives on your roof.
Metal Roofing
Standing-seam metal roofing has become the choice for Cohasset homeowners who want century-scale durability with clean, contemporary lines - or who need to match existing copper or terne-metal details on historic properties. We fabricate custom flashings and transition pieces in our shop, critical for the complex geometries of Cohasset’s older homes. Metal runs $35,000-$55,000 installed for a typical estate home, with coastal-grade Kynar finishes that resist salt corrosion far longer than standard painted products. On oceanfront properties, we specify stainless or copper at all exposed edges, never aluminum that will galvanically corrode where it contacts legacy copper.
Tile Roofing
Clay and concrete tile installations in Cohasset are less common than slate or shake, but they appear on Mediterranean-influenced estates and additions where the homeowner wants the thermal mass and distinctive profile. We engineer the structural support - tile is heavy, and Cohasset’s older homes were not always framed for it - and install proper underlayment and fastening for coastal wind exposure. Expect $40,000-$65,000 for a full tile installation, with lifespans exceeding 50 years.
Flat Roofing
Low-slope sections on Cohasset’s older homes - over porches, dormers, or modern additions - require membranes designed for ponding water and UV exposure. We install TPO, modified bitumen, and EPDM systems with proper drainage integration, critical where ice dams and wind-driven rain converge. A typical flat section replacement runs $8,000-$15,000 depending on access and square footage.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Cohasset
We are authorized installers for seven manufacturer lines: GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For Cohasset’s market, we most often specify GAF Timberline architectural shingles for their wind and algae resistance, Atlas StormMaster for coastal wind ratings, and Tamko Heritage for homeowners seeking value without compromise. We stock common profiles and colors locally, reducing wait times when a nor’easter is forecast and you need coverage fast. Every installation carries full manufacturer warranty plus our 90-Day Done Right Promise on workmanship.
Common Roof Replacement & Installation Problems We See in Cohasset Homes
- Underlayment failure in ice-dam zones. Historic Cohasset homes with minimal ventilation and complex roof geometries trap meltwater at valleys and eaves, rotting sheathing behind even premium slates. We find this hidden damage on roughly half the tear-offs we perform in town - damage the homeowner never saw from the ground.
- Wind-uplift of slate on exposed ledge sites. Nor’easters rip individual slates from fasteners weakened by salt corrosion, creating a cascading leak path unseen on sheltered roofs. The damage starts small: one missing slate, then water infiltration, then ruined sheathing. Annual inspection catches it early.
- Incompatible flashing alloys. Standard aluminum flashing reacts with copper or lead flashings on older homes, causing galvanic corrosion and leaks within two seasons. We see this repeatedly on jobs where previous contractors used whatever was in the truck, not what the house required.
- Original Vermont slate with no matching source. Cohasset’s historic estates often feature original Vermont slate roofs with hand-cut fish-scale patterns, a material no longer quarried in the same way. This forces replacement decisions between expensive custom-milled slate, synthetic alternatives, or losing historical accuracy. We walk homeowners through each option with samples, pricing, and longevity data - no pressure, just the facts.
Pricing for Roof Replacement & Installation in Cohasset, MA
Here is what roof replacement costs in Cohasset’s market as of 2025:
| Service | Typical Range |
|---|---|
| Asphalt shingle replacement (2,000-3,000 sq ft) | $18,000-$28,000 |
| Architectural shingle with premium underlayment | $24,000-$35,000 |
| Standing-seam metal (copper or steel) | $35,000-$55,000 |
| Custom slate or synthetic slate match | $45,000-$85,000+ |
| Flat/low-slope membrane section | $8,000-$15,000 |
| Ice-dam repair with sheathing replacement | $3,500-$8,500 |
What moves the number: roof pitch (steeper costs more), layers to tear off, sheathing condition, accessibility for material delivery, and whether we are matching historic materials or installing new. Oceanfront properties requiring upgraded flashing and fasteners add 10-20% for the heavier-gauge copper, stainless hardware, and additional labor.
We provide free, written estimates with no obligation. The price we quote is the price you pay. Call (844) 563-1816 to schedule - we answer live, 24 hours a day.
We Also Serve Cities Near Cohasset
Our crews work throughout the South Shore, including Cohasset and neighboring North Scituate, Scituate, Hingham, and Hull. Each town presents its own conditions - Hingham’s more sheltered inland sites, Scituate’s mix of coastal and modest stock, Hull’s narrow peninsula exposure - and we adjust our specifications accordingly. Wherever you are on the South Shore, the same standards apply: background-checked technicians, photo-documented inspections, upfront pricing, and the 90-Day Done Right Promise.
Serving Cohasset, MA - Our Local Coverage Area
We’re based in the Cohasset 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 Cohasset
Exact matching is often not possible, as the original Vermont quarries producing hand-cut fish-scale slate have closed or changed operations. We source the closest available custom-milled slate from remaining domestic quarries, or present high-grade synthetic alternatives that replicate the profile and color variation. On a recent job near Jerusalem Road, we blended reclaimed slate from a demolished Newport estate with new production to maintain visual consistency. Call (844) 563-1816 and we will bring samples to your home.
Yes - standard residential flashing fails within a few seasons on oceanfront bluff properties. We specify heavier-gauge copper or stainless steel, wider sealing margins at all penetrations, and ring-shank fasteners throughout to resist wind uplift. The salt spray and unbroken wind exposure that make Cohasset’s coastline beautiful also make it one of the most aggressive environments for roofing metals in Massachusetts. We have replaced too many “standard” installations to recommend anything less.
Repair is worth considering when the slate itself is sound and the failure is isolated to flashing, fasteners, or limited sheathing damage - typical repair range $2,500-$7,500. Full replacement becomes the better investment when more than 20-25% of slates are cracked, fasteners are failing throughout, or underlying sheathing is rotted. Asphalt costs less upfront ($18,000-$28,000 vs. $45,000+ for slate match) but changes the home’s character and reduces resale value in Cohasset’s historic market. We assess your roof’s condition honestly and explain both paths.
Ice dams on Cohasset’s steep slate roofs start with heat loss and inadequate ventilation, not the slope itself. We address them through proper intake and exhaust ventilation, ice-and-water shield membrane at eaves and valleys, and in severe cases, targeted air sealing and insulation improvements in the attic. On historic homes where interior modifications are restricted, we may recommend exterior solutions like heat cable systems at critical junctions. Every recommendation is specific to your home’s construction, not a generic package.
We most often install GAF Timberline HDZ or Atlas StormMaster Slate for Cohasset’s coastal conditions, both rated for high wind and carrying algae-resistant warranties critical in our humid environment. CertainTeed Landmark is another strong option for homeowners prioritizing color selection. We are authorized installers for all seven brands we carry, so your manufacturer warranty is fully valid - no coverage gaps from improper installation. For an exact specification and color match to your home, call (844) 563-1816 for a free estimate.
Ready to talk about your roof? Call (844) 563-1816 any time - day, night, weekend, or in the middle of a storm. A live person will answer, schedule your free estimate, and send a background-checked, uniformed technician who knows Cohasset’s houses and Cohasset’s weather. We have been here since 1984. We will be here when you need us.
Written by Pete Navarro, Owner at Ridgeline Roofing Co., serving Cohasset since 1984.