01 / 52
ROOFING · CORNWALL, NY
Roofing in Cornwall, NY.
Roofing in Cornwall and Cornwall-on-Hudson, NY — steep, shaded roofs under Storm King handled with algae-resistant shingles and real ventilation.
Why hire us for roofing in Cornwall?
Cornwall roofs live under trees. Between Storm King Mountain, the wooded lots in Cornwall-on-Hudson and the hillsides around Mountainville, many homes get little direct sun, so moss, algae streaks and damp decking show up years earlier than they should. We use algae-resistant shingles such as GAF Timberline HDZ with StainGuard Plus, improve attic ventilation so the deck dries out, and rework valleys and chimney details where debris collects. Steep capes and colonials on narrow village streets also take careful staging and landscape protection, which our crew plans before day one.
What we see on Cornwall roofing jobs
- Shaded, north-facing slopes get algae-resistant shingles and extra ventilation so the decking dries between storms.
- Valleys and chimney crickets are cleared and re-flashed so pine needles and leaves can’t dam water.
- Steep pitches on village capes are staged with roof jacks and fall protection, and plantings below are covered.
Neighborhoods we serve in Cornwall: Cornwall-on-Hudson, Mountainville, Firthcliffe, Angry Orchard corridor, Route 9W area, Woodland Avenue district.
LOCAL PROJECTS
View All →Roofing work near Cornwall, NY
02 / 52
Stone chimney flashing installation on asphalt shingles
03 / 52
Roofer applying sealant to stone chimney flashing
GOOGLE REVIEWS
FIVE STARS. EARNED, NOT ASKED.
Real reviews from real homeowners across our service area. We don't run promotions for testimonials — we just do the work right.
"I contacted THUNDER Pro Construction for a roof repair, and they exceeded all of my expectations. Diego and his team are simply the best! Th…"
See more on Google
Miguel Vera
Google Review · 3 months ago
"THUNDER Pro Construction is hands down the best company for roof replacement! Diego and his team were reliable, professional, and paid atten…"
See more on Google
Yordy Vera
Google Review · 3 months ago
"We are beyond happy with our new deck! THUNDER Pro Construction LLC exceeded all of our expectations. Diego and his team were knowledgeable,…"
See more on Google
Nayeli vera
Google Review · 3 months ago
"Thunder Pro Construction did an outstanding job from start to finish. The crew was professional, arrived on time, kept everything clean, and…"
See more on Google
Cristian Villavicencio
Google Review · 3 months ago
"Excellent workmanship repairing and replacing porch columns"
Marlo Barnes
Google Review · in the last week
WORKED WITH US?
SHARE YOUR EXPERIENCE.
Your honest review helps neighbors find a contractor they can trust. Takes less than two minutes.
QUESTIONS
Common Roofing questions in Cornwall, NY
More questions? Call (845) 234-9871 or request an estimate — we don't believe in pressure sales.
Why does my Cornwall roof have black streaks and moss?
Shade and moisture from tree cover let algae and moss grow on shingles. Cleaning helps short-term, but at replacement we use algae-resistant shingles and better ventilation so the problem doesn’t come back.
Do you work in the Village of Cornwall-on-Hudson?
Yes. We work throughout the Town of Cornwall and the village, and we plan parking, dumpster placement and debris protection around the narrow streets and steep driveways common there.
How long does a re-roof take?
Most homes are 1-2 full crew days. Large or complex roofs (cut-ups, steep pitches, 40+ squares) can run 3-4 days. We do not leave a roof open overnight if weather is coming
Do you handle insurance claims?
Yes. We meet the adjuster on-site, document everything with drone photos, and bill the carrier directly. You pay your deductible, nothing else
FREE ESTIMATE — NO OBLIGATION
READY WHEN YOU ARE. SAME-DAY QUOTES AVAILABLE.
Tell us about your roof, your storm damage, your siding job — anything. We'll come out, inspect, and put a written estimate in your hand. No pressure, no games.