GNP Roofing & Siding
About GNP Roofing & Siding
GNP Roofing & Siding is a family-owned roofing and exterior contracting business serving Long Island, specifically Suffolk and Nassau Counties. With over 30 years of experience, they specialize in roofing, siding, window, and gutter services for residential and commercial properties, and pride themselves on having the owner personally oversee each project.
Listing last verified March 2026. Information sourced from public records and Google Business data.
Siding Services
siding services offered in Orangetown:
- Roof Repair
- Roof Replacement
- New Roof Installation
- Flat Roof Installation
- Shingle Roof Installation
- Vinyl siding installation and repair
- Fiber cement (Hardie Board) installation
- Wood siding repair and replacement
Siding in Orangetown — FAQ
How much does new siding cost in Orangetown?
New siding in Orangetown costs $9-$18 per sq ft, with the average project at $15,000. Vinyl siding is most common in Rockland's subdivisions. Hardie board gaining popularity for its durability.
What siding material is best for Orangetown?
For Orangetown's Split-Level and Colonial homes (median value $585,000), fiber cement (James Hardie) is the top choice—it handles New York's freeze-thaw cycles well and offers 30-50 year durability. Cedar suits historic homes, while vinyl is the most budget-friendly.
How long does siding last in Orangetown?
Vinyl siding lasts 20-40 years, fiber cement 30-50 years, and cedar 20-40 years with maintenance. New York's weather cycles can reduce lifespan if siding isn't properly installed.
Before Hiring a Siding Pro in Orangetown
Use this checklist to vet contractors before signing a contract.
Ask about housewrap and weather barrier installation behind the siding
Siding alone is not waterproof. A continuous weather barrier (Tyvek, ZIP System) must be installed properly to prevent moisture intrusion.
Verify they follow the manufacturer's installation specifications
Improper installation voids the siding warranty. James Hardie fiber cement, for example, has specific fastener and gap requirements.
Ask whether the quote includes soffit, fascia, and trim — or just field siding
Trim, corners, and soffit add 20-40% to the cost. Some contractors quote field siding only and present trim as extras later.
Verify Home Improvement Contractor license with your municipality
New York counties require Home Improvement Contractor registration. Check with your local clerk's office or building department.
Confirm general liability insurance and workers' compensation coverage
Ask for a certificate of insurance (COI) naming you as additionally insured. Workers' comp protects you if a worker is injured on your property.
Get 2-3 written estimates that itemize labor, materials, and timeline
Lump-sum quotes hide details. Itemized estimates let you compare apples to apples and catch hidden costs.
Check permit requirements with Town of Orangetown Building Department ((845) 359-8410)
Contact town hall for permit requirements. Town includes Tappan, Pearl River, Blauvelt, Orangeburg, and Palisades hamlets.
Ask for 3 recent local references and actually call them
Ask references specifically: Did the job finish on time and on budget? Were there surprises? Would you hire them again?
Verify contractor credentials: NY Division of Licensing Services
Best Time to Hire a Siding Pro in New York
Seasonal timing guide for the Northeast (CT/NY metro area).
Best time to schedule. Mild temps allow comfortable installation. Vinyl siding needs 40°F+ to remain flexible. Book early — siding crews fill up by June.
Good installation conditions but peak demand. Vinyl expands in heat, so installers must leave proper expansion gaps. Fiber cement is unaffected by temperature.
Last window before winter. Finish before sustained temps drop below 40°F. Caulk and sealant need above-freezing temps to cure. October is the practical cutoff.
Vinyl becomes brittle below 40°F and cracks during installation. Fiber cement can be installed in cold weather but caulking and flashing are compromised. Emergency repairs only.
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