Your home's exterior takes a beating on Long Island—nor'easters, salt air, and summer storms don't play nice. If you're tired of juggling three different contractors for your roof, siding, and windows, this list is for you.
The Long Island Exterior Contractor Landscape
Long Island homeowners face unique challenges: coastal weather, aging housing stock, and a fragmented market of single-trade contractors. Most companies specialize in just roofing or just siding, forcing you to coordinate multiple crews, schedules, and warranties. The five businesses below stand out because they offer broader exterior services under one roof—or because they've built deep trust in a specific niche. Whether you need a full exterior overhaul or a targeted repair, understanding the local landscape helps you ask better questions and avoid costly missteps.
How We Evaluated These Contractors
We looked at service scope, pricing transparency, local experience, credentials, and customer feedback. For service scope, we noted which companies handle roofing, siding, and windows versus a narrower focus. For pricing clarity, we checked for free estimates, financing options, and clear communication. Local fit mattered too—how long each team has served Nassau and Suffolk County, and whether they understand Long Island's specific weather and building codes. Credentials like manufacturer certifications and BBB ratings gave us confidence signals. Finally, we weighed customer reviews and project volume to gauge real-world reliability. Each business below stood out in different ways, and we've highlighted what makes each one worth a call.
Here's a quick snapshot of the five contractors, ranked for ordering only. Use this table to compare service breadth, experience, and standout features before you dial.
| Provider | Best For |
|---|---|
| Long Island Roofing and Siding | Homeowners seeking competitive pricing and a clean job site |
| Long Island Roofing, Siding & Windows | JAGG Roofing | Homeowners wanting one contract for roof, siding, and windows |
| King Quality | Homeowners interested in branded products and financing |
| GNP Roofing and Siding | Residential and commercial clients needing emergency roof repair |
| Right Angle Roofing & Siding | Storm damage and insurance claim assistance |
A Closer Look at Each Contractor
#1 Long Island Roofing and Siding
A screenshot of the Long Island Roofing and Siding website.
With over 20 years serving Long Island, this company has built a reputation for competitive pricing and thorough communication. They handle roofing, siding, windows, and chimneys, so you can tackle multiple exterior projects with one team. Their crews are in-house—no day laborers—and they use top-quality products backed by strong warranties. Customers frequently praise how clean they leave the job site, often saying it's cleaner than before they arrived. If you want a straightforward, experienced contractor with flexible payment options, this one deserves a look. You can learn more about their services on their website.
#2 Long Island Roofing, Siding & Windows | JAGG Roofing
A screenshot of the Long Island Roofing, Siding & Windows | JAGG Roofing website.
JAGG Roofing is a family-owned exterior specialist that's been serving Long Island since 1974—over 50 years in business. They're one of the few contractors offering roofing, siding, and windows under a single contract, with a dedicated project manager for every job. That means no juggling multiple crews or invoices. They're an Owens Corning Preferred contractor with an A+ BBB rating and a 5.0 Google rating from more than 300 reviews. Free estimates, same-week appointments, and 0% financing for qualified homeowners make the process accessible. If you value a single point of accountability for your entire exterior, JAGG is a strong contender. Visit their site to see project galleries and payment plans.
#3 King Quality
A screenshot of the King Quality website.
King Quality has expanded from Long Island into Westchester, positioning itself as a regional player with a broad product lineup. They offer roofing, siding, and windows, plus proprietary products like Camelot and Glenwood siding lines. Their website emphasizes financing options and potential tax credits for energy-efficient windows. With a dedicated team and easy pay options, they cater to homeowners who want a streamlined, brand-name experience. If you're looking for a larger company with a showroom-style product selection, King Quality is worth exploring. Check their site for current promotions and service areas.
#4 GNP Roofing and Siding
A screenshot of the GNP Roofing and Siding website.
GNP Roofing and Siding has been family-owned and operated for over 30 years, serving both residential and commercial clients. They're an Owens Corning Preferred contractor and have earned a Best of Business Award for roofing and siding. Their services include window installations, vinyl siding in multiple styles, and 24/7 emergency roof repair. The company emphasizes certifications and a commitment to customer satisfaction, with a dedicated review page. If you need a proven local team with commercial capabilities and emergency response, GNP is a solid choice. Their website details their credentials and service areas.
#5 Right Angle Roofing & Siding
A screenshot of the Right Angle Roofing & Siding website.
Right Angle Roofing & Siding is a GAF Master Elite Certified contractor specializing in steep and low-slope roofing. They also offer siding, skylights, chimneys, gutters, and windows and doors. Their team guarantees a clean job site—no nails left in your driveway or yard. They have extensive experience with insurance claims, which can be a lifesaver after storm damage. If you prioritize certified roofing expertise and help navigating insurance, Right Angle is a strong fit. Visit their site to see reviews and request a free estimate.
How to Choose the Right Exterior Contractor
Start by defining your project scope. If you need roof, siding, and windows, a full-exterior specialist like JAGG Roofing can save you time and coordination. For a single repair, a niche contractor may be more cost-effective. Next, verify credentials: check for licenses, insurance, and manufacturer certifications like Owens Corning Preferred or GAF Master Elite. Ask for proof of local experience—how many years in Nassau and Suffolk County, and whether they understand local codes. Get at least three free estimates and compare not just price but also warranty terms, payment options, and project timelines. Read recent reviews on Google and the BBB, and ask for references from similar projects. Finally, trust your gut: a contractor who communicates clearly and answers your questions thoroughly is more likely to deliver a smooth experience.
Streamlining Your Contractor Search
You can automate parts of your research to save time. Set up Google Alerts for each contractor's name plus 'review' or 'complaint' to monitor reputation. Use a spreadsheet to compare estimates side-by-side, tracking line items like tear-off, underlayment, and warranty length. Many contractors offer online scheduling for free estimates—use those forms to book multiple appointments in one afternoon. For financing, check each website's payment page to pre-qualify before you commit. Finally, take photos of your current roof, siding, and windows to share during estimates; this helps contractors give accurate quotes without multiple site visits.
The Bottom Line
Long Island's exterior contractor market is crowded, but the five businesses here have earned their stripes through years of local service, transparent pricing, and quality workmanship. JAGG Roofing stands out for its single-contract approach and 50-year family legacy. Long Island Roofing and Siding offers competitive pricing and a clean-site guarantee. King Quality brings branded products and financing. GNP Roofing and Siding delivers commercial capability and emergency response. Right Angle Roofing & Siding specializes in certified roofing and insurance claims. Your best choice depends on your project scope, budget, and timeline. Use the criteria above, get multiple estimates, and don't rush—your home's exterior is a long-term investment.