Cornwall combines river views, wooded lots and established neighborhoods — all of which need exterior systems built for moisture, wind and heavy winter weather. We serve Cornwall homeowners with full roofing, siding and storm repair crews.
EXTERIOR SERVICE

Cornwall, NY.

Cornwall combines river views, wooded lots and established neighborhoods — all of which need exterior systems built for moisture, wind and heavy winter weather. We serve Cornwall homeowners with full roofing, siding and storm repair crews.

WHAT WE DO HERE
Every service we offer is available in Cornwall, NY
8 SERVICE LINES · 1 CREW

Roofing

Asphalt, metal, storm repairs

  • GAF Certified Installer · 50-year material warranty
  • Full tear-off, deck inspection and replacement as needed
  • Architectural, designer, and standing-seam metal options
  • Storm response and insurance claim assistance
EXPLORE

Siding

Vinyl, fiber cement, wood

  • Hardie ColorPlus, vinyl, engineered wood
  • House-wrap + window & door re-flashing on every install
  • Soffit, fascia and trim color-matched to siding
  • Lifetime fade & finish warranty on Hardie ColorPlus
EXPLORE

Gutters

Aluminum, vinyl, steel

  • On-site seamless gutter machine — no joints, no leaks
  • 5" and 6" aluminum in 20+ baked-on colors
  • Hidden hangers, leaf guards, downspout extensions
  • Free gutter cleaning on every roof we install
EXPLORE

Chimneys

Crowns, flashing, liners, caps

  • Full chimney rebuilds and tuckpointing
  • Stainless step + counter-flashing, never tar patches
  • Custom-fabricated chase covers and crickets
  • Crown rebuilds with proper overhang and drip edge
EXPLORE

Decks

Custom decks built to last

  • Composite, PVC, cedar, pressure-treated
  • Engineered footings and joist layout
  • Hidden fasteners, picture-frame borders
  • Permitted and inspected — done right
EXPLORE

Railings

Aluminum, composite, wood, cable

  • Aluminum, composite, wood, cable, glass panel
  • Code-compliant 36" / 42" rail heights
  • Hidden post anchors — no surface-mount wobble
  • Custom gates and accessibility ramps
EXPLORE

Interior Repairs

Drywall, paint, floors, insulation

  • Drywall patching, finishing and texture matching
  • Painting — interior, exterior, full color consult
  • Hardwood and laminate repair / replacement
  • Insulation and ceiling restoration after water damage
EXPLORE

Painting

Interior, exterior, trim and stain

  • Interior walls, ceilings, trim and doors
  • Exterior siding, trim, shutters and porches
  • Deck and railing stain / solid-color coatings
  • Lead-safe prep on pre-1978 homes (RRP certified)
EXPLORE
LOCAL KNOWLEDGE
What we see in Cornwall, NY

Cornwall projects often involve steep rooflines, tree cover and exposure to Hudson Valley weather — making proper underlayment, ventilation and flashing especially important.

Neighborhoods we work in
Cornwall-on-HudsonMountainvilleFirthcliffeAngry Orchard corridorRoute 9W areaWoodland Avenue district
● TOWN FACT SHEET · 12518
Service focus

Roofing, siding, gutters and hillside exterior restoration

Local character

River-town feel with wooded residential streets and older housing stock

Weather risk

Moisture, wind and ice dams are recurring concerns on shaded roofs

Common property type

Colonials, capes, hillside homes and river-adjacent properties

Coverage note

Short drive west from New Windsor via Route 32 and 9W

VIEW OUR WORKS
Recent jobs in Cornwall, NY
View All →
Plumbing vent pipe flashing with damaged sealant
01 / 187

Plumbing vent pipe flashing with damaged sealant

Stone chimney flashing installation on asphalt shingles
02 / 187

Stone chimney flashing installation on asphalt shingles

Roofer applying sealant to stone chimney flashing
03 / 187

Roofer applying sealant to stone chimney flashing

OUR 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…"

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Miguel Vera

Miguel Vera

Google Review · a month ago

"THUNDER Pro Construction is hands down the best company for roof replacement! Diego and his team were reliable, professional, and paid atten…"

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Yordy Vera

Yordy Vera

Google Review · a month ago

"Thunder Pro Construction did an outstanding job from start to finish. The crew was professional, arrived on time, kept everything clean, and…"

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Cristian Villavicencio

Cristian Villavicencio

Google Review · a month ago

"Today I hired Diego for another project of power washing my house after rebuiding my deck a few days before.. He and his team's work far exc…"

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Joseph T.

Joseph T.

Google Review · a month ago

"I contacted THUNDER Pro Construction LLC for a fascia repair, and I couldn't be happier with the results. Diego and his team are the best! T…"

See more on Google
Jully Piedra

Jully Piedra

Google Review · a month ago

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QUESTIONS
Cornwall, NY specific questions

More questions? Call (845) 234-9871 or request an estimate — we don't believe in pressure sales.

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
What warranty do I get?
50-year material warranty on GAF systems (lifetime on most shingles), plus our 15-year workmanship warranty. Transferable to new owner once
Can you install in winter?
Asphalt shingles need 40°F for proper seal, but we do emergency repairs year-round and full re-roofs down to October in normal years. Metal installs any month
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.

Call (845) 234-9871