Roof Waterproofing
Advanced roof waterproofing in Rochester—membranes, flashings, and details that stop leaks.
Roof Waterproofing in Rochester, NY
Great roofing is great waterproofing. We harden the system where water tries to win—eaves, valleys, sidewalls, penetrations, and low-slope transitions—so your roof stays dry through Rochester’s toughest seasons. Our approach blends materials and method: self-adhered ice-and-water membranes at critical zones; synthetic underlayments that resist wrinkling; metal flashings bent to fit your details; and sealants that remain flexible in freeze–thaw cycles. Whether we’re building new or retrofitting an existing roof, the goal is the same: continuous, shingle-to-flashing-to-underlayment pathways that shed water predictably.
Critical Zones We Reinforce
Eaves & Rakes: Wider ice barrier where long eaves or cold gutters threaten dams. Valleys: Open metal or properly executed closed-cuts that resist scouring. Sidewalls & Chimneys: Step + counter-flashing with true reglet cuts and capillary breaks. Penetrations: UV-stable boots, lapped underlayment, and cover strips. Low Slope Areas: Compatible membranes and transition flashings to prevent ponding creep under shingles.
Why It Matters in Rochester
Our weather throws water, ice, and wind at every weak point. Waterproofing makes those points strong, turning your roof from a pretty surface into a robust system that shrugs off storms.
Customer testimonials
Upgrading Existing Roofs Without Full Replacement
Not every leak means you need a new roof. If the field shingles still have life, we can surgically improve weak areas. That might mean adding or widening ice barrier at eaves and valleys, rebuilding failing chimney flashings with new step/counter assemblies, replacing degraded pipe boots, or correcting low-slope transitions with compatible membranes. We’ll lift specific courses, integrate materials as if the roof were new, and restore proper laps and capillary breaks. It’s meticulous work, but for many Rochester homes it’s the fastest path to a dry interior without the cost and disruption of a full tear-off. We’ll document before/after so you see exactly what changed and why it works.
Flashing: The Unsung Waterproofing Hero
Most roofs don’t fail in the middle—they fail at the edges and junctions. That’s flashing’s job, and it’s where craft shows. We custom-bend metals to match your roof geometry, maintain proper overlaps, and create capillary breaks so wind-driven rain can’t sneak backward. At chimneys, we cut reglets into the mortar for counter-flashing that actually sheds water; at sidewalls, we step each course into the shingle field; and around skylights and vents we use manufacturer kits or proven field-fabricated details. Good flashing is why a roof keeps working long after the shingles age. We treat it like the critical component it is.
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When Coatings Make Sense (and When They Don’t)
On flat or low-slope roofs with sound membranes, elastomeric coatings can add 5–10 years of service life while reflecting heat in summer. But coatings aren’t a cure-all. We’ll test adhesion, repair the base membrane first, and only coat where slope and detailing support success. On steep-slope shingle roofs, we prioritize detail rebuilding over coatings because that’s where water actually wins. You’ll get an honest recommendation either way—our goal is a dry, efficient home in every season.
Frequently Asked Questions
Roof waterproofing is the process of reinforcing every vulnerable part of your roof—like eaves, valleys, chimneys, and low-slope areas—so water can’t sneak in. In Rochester, where snow, ice, and wind are relentless, waterproofing is what keeps your roof from leaking even when shingles alone aren’t enough.
Not always. If your shingles still have life, we can perform surgical repairs: adding ice barriers, rebuilding flashing around chimneys, replacing boots around pipes, and correcting problem transitions. This restores water-shedding pathways without the cost of a full tear-off.
We combine self-adhered ice-and-water membranes, synthetic underlayments, custom-bent flashings, and flexible sealants that stay strong through freeze–thaw cycles. Each material is chosen to work as a continuous system, keeping water moving off your roof predictably.
These are the zones where most roofs fail—so we give them special attention. We install step + counter-flashings with real reglet cuts at chimneys, use open metal or clean closed-cut valleys that resist scouring, and add wider barriers at long eaves to prevent ice dams.
Coatings work great on flat or low-slope roofs with sound membranes—they can add 5–10 years of life. But they’re not a cure-all. We always repair the base membrane first and recommend coatings only when the roof slope and details support long-term success.
Areas We Serve
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