Roofing Contractors in Nassau County, NY
Doon Construction Corporation is a licensed and insured roofing contractor serving every town and village in Nassau County. From shingle-roof replacements on Garden City colonials to TPO membrane installs on Hicksville commercial buildings, we deliver clean, code-compliant work backed by a 10-year written workmanship warranty.
Nassau County's coastal climate is hard on roofs — wind-driven rain off the South Shore, nor'easters, ice damming in winter, and sun exposure in summer all shorten a roof's life. Our crews specialize in coastal-grade installations: full ice-and-water shield, upgraded underlayment, properly rated fasteners, and ventilation that meets local code for every town building department in Nassau.
Roofing Services We Provide
- Asphalt shingle roofs (architectural, three-tab, designer)
- Flat roof systems — TPO, EPDM, modified bitumen
- Metal roofing (standing seam, corrugated)
- Full roof tear-off and replacement
- Roof repair and leak detection
- Storm and wind damage repair
- Gutter and downspout replacement
- Skylight installation and replacement
- Chimney flashing and waterproofing
- Ice and water shield, attic ventilation
Residential vs. Commercial Roofing
For residential homes across Nassau — colonials, capes, splanches, ranches — we install architectural asphalt shingles (GAF Timberline, CertainTeed Landmark, Owens Corning Duration) with full tear-off, new underlayment, ice and water shield in valleys and along eaves, and ridge ventilation. For flat and low-slope commercial buildings, we install TPO and EPDM membrane systems with manufacturer-certified labor and NDL warranties. Storm and leak repairs are dispatched within 24 hours.
Nassau County Towns We Serve
Related Services in Nassau County
Nassau County Roofing — FAQ
What roofing services do you provide in Nassau County?
We install and repair flat roofs (TPO, EPDM, modified bitumen), pitched asphalt-shingle roofs, metal roofs, and full waterproofing systems. We also handle storm and leak repairs, gutter replacement, skylight installation, and chimney flashing throughout Nassau County.
How much does a new roof cost in Nassau County?
A typical asphalt-shingle roof replacement on a Nassau County single-family home runs $9,000 to $18,000 depending on square footage, pitch, and tear-off requirements. Flat roofs (TPO/EPDM) for commercial or multi-family buildings range from $7 to $14 per square foot installed. We provide free on-site inspections and itemized written estimates.
Are you licensed and insured to work in Nassau County?
Yes. Doon Construction Corporation is a fully licensed contractor with $2M+ in general liability insurance, workers' compensation coverage, and OSHA certifications. We pull permits with the local town building department (Hempstead, North Hempstead, Oyster Bay, Glen Cove) as required.
Which Nassau County towns and villages do you cover?
We serve all of Nassau County including Hempstead, North Hempstead, Oyster Bay, Glen Cove, Long Beach, Hicksville, Levittown, Garden City, Mineola, Freeport, Valley Stream, Massapequa, Syosset, Great Neck, Manhasset, Port Washington, Bethpage, and Westbury.
How quickly can you respond to a roof leak?
We respond to active roof leaks in Nassau County within 24 hours and most often the same day. We carry tarping materials and emergency patch supplies on every truck so we can stop water entry immediately while a permanent repair is scheduled.
What warranty do you offer on a new roof?
New shingle roofs come with the manufacturer's material warranty (25 to 50 years depending on product) plus our 10-year workmanship warranty in writing. Flat-roof systems include the manufacturer's NDL warranty (typically 15–20 years) and our workmanship guarantee.