LI Roofing Co.: Long Island's Full-Service Roofing Company

LI Roofing Co. is not a referral service, a lead-gen middleman, or a franchise. It is a Long Island roofing company founded and operated by Tom Gallagher, serving Nassau and Suffolk County homeowners since day one.

The credentials that matter:

GAF Master Elite certification. GAF is the largest roofing manufacturer in North America. Their Master Elite designation is awarded to fewer than 3% of roofing contractors nationwide. Earning it requires passing GAF's installation training program, maintaining active general liability and workers compensation insurance at required minimums, and sustaining high customer satisfaction scores. It is reviewed annually. LI Roofing Co. holds this designation — and renews it every year.

Nassau HIC and Suffolk HIC licensed. Home Improvement Contractor licensing is mandatory in both counties. Our Nassau County HIC license (DCA license #H01-00XXXX) and Suffolk County HIC license are both active and verifiable online at each county's Department of Consumer Affairs. Any contractor who cannot provide these two numbers is not legally permitted to work in your county.

800+ Long Island roofs installed. This is not an estimate or a marketing claim. It is a count of permitted, inspected jobs completed on Nassau and Suffolk properties — capes and ranches in Nassau, splits and colonials in Suffolk, waterfront homes along the Sound and the bay, Victorian village homes, and everything in between.

Full insurance coverage. General liability at $2M aggregate and NYSIF workers compensation for every crew member, active and current. We provide certificates of insurance at any estimate appointment, no request required.

The distinction matters — and it is why homeowners searching for a "roofing company" (rather than just a "roofer") are asking the right question.

Crew stability. A roofing company fields the same trained crews job after job. The same foreman who handles the tear-off knows how that crew runs the ice-and-water, the underlayment, the drip edge, and the ridge vent. A roofer operating as a one-man referral to whoever is available that week has no continuity. On a $16,000 project, crew consistency is not a minor detail.

Manufacturer certification and warranty backing. An individual roofer can buy GAF shingles. Only a GAF Master Elite contractor can offer the GAF Golden Pledge warranty — a 25-year coverage of both materials and workmanship, backed by GAF directly, not just the installing contractor. If LI Roofing Co. went out of business in year four of your 25-year Golden Pledge, GAF is still obligated to honor the warranty. That backstop does not exist with an uncertified installer.

Permit pull history. A roofing company with hundreds of permitted jobs has a track record that building departments know. We have pulled permits in every Nassau and Suffolk municipality. We know which building departments run 7-day turnarounds and which take three weeks. We know the inspectors. We know what they look for. First-time or infrequent operators learn that on your project.

Accountability infrastructure. A company has a phone number that gets answered. A service line for post-job issues. A written process for warranty claims. An address. The accountability a homeowner can actually use five years from now, not just on the day the job finishes.

Contractors use the words "certified" and "GAF contractor" loosely. Here is the actual breakdown.

The difference between Master Elite and uncertified is not a marketing tier. It is the difference between a 25-year warranty that GAF stands behind and a shingle warranty with no workmanship coverage at all. LI Roofing Co. operates at the Master Elite level — the only tier where the Golden Pledge is available.

LI Roofing Co. handles every aspect of residential roofing on Long Island.

Full roof replacement. Complete tear-off of existing roofing, installation of new ice-and-water shield, underlayment, GAF architectural shingles, drip edge, ridge vent, and all flashings. Permitted and inspected in every municipality. See our Long Island roof replacement resource for full scope detail.

Roof repairs. Leak diagnosis, flashing repairs, shingle replacement, chimney resealing, valley repairs, skylight sealing. We repair what we can and are direct with you when a repair is not the right answer for your roof's condition.

Gutter installation and replacement. Seamless gutters fabricated on-site in 5" and 6" profiles, aluminum and copper. Downspout relocation, underground drainage extensions. Gutter guards for homes with heavy tree coverage.

Roof inspections. Pre-purchase inspections, insurance claim documentation, post-storm assessments. Written reports with photos. We work with every major insurance carrier operating in Nassau and Suffolk.

For cost information, see our Long Island roof replacement cost guide.

LI Roofing Co. works across all of Nassau and Suffolk County. We have active permit relationships with every major building department on the island.

Nassau County towns and communities: Levittown, East Meadow, Massapequa, Valley Stream, Freeport, Rockville Centre, Garden City, Hicksville, Plainview, Westbury, Wantagh, Merrick, Bellmore, Seaford, Uniondale.

Suffolk County towns and communities: Bay Shore, Brentwood, Commack, Huntington Station, Northport, Smithtown, Kings Park, St. James, Patchogue, Medford, Coram, Ronkonkoma, Lake Grove, Deer Park, West Babylon, Babylon.

Waterfront and North Shore communities: Port Washington, Oyster Bay, Lloyd Harbor, Cold Spring Harbor, Huntington Village, Centerport, Glen Cove.

If you do not see your community listed, call us — we serve all of Nassau and Suffolk County. We are not a company that limits its footprint to one end of the island.

Homeowners who search for a "roofing company" are making a specific choice, whether they realize it or not. They are looking for an entity — a business with infrastructure, accountability, and staying power — not just a person with a ladder and a pickup.

That instinct is correct. When you hire a roofing company rather than an individual, you are buying:

Recourse. If work is done incorrectly, a company has assets, insurance, and a license to lose. The accountability structure is fundamentally different than hiring someone whose only business presence is a phone number.

Longevity. Roofs last 25-30 years. The contractor you hire today should be reachable in year ten when you have a question about a flashing detail. A company with a real operation, a real license, and a real track record is more likely to still be in business.

Warranty enforcement. A workmanship warranty is only as good as the entity behind it. A company with manufacturer backing — especially GAF Golden Pledge backing — gives you warranty enforcement that does not depend solely on the installing contractor staying in business.

LI Roofing Co. has all three. That is why we are the roofing company Long Island homeowners call.

See also: How to choose among roofing companies on Long Island

Over 800 permitted, completed roofing projects across Nassau and Suffolk County generate a lot of feedback. The themes that come up consistently: clear communication at the estimate, no surprises on price at the invoice, clean job sites, and accurate timelines.

We do not ask homeowners to leave reviews. The ones that appear on Google, HomeAdvisor, and the Better Business Bureau are organic — homeowners who took the time because their experience was worth noting.

A few things we hear regularly from Long Island homeowners:

• The estimate was detailed and explained clearly — no guessing about what was included
• The permit was pulled before the start date, not after
• The crew was on time and left the property clean at the end of every day
• Post-job questions were answered directly, not routed through a call center

We are a Long Island company. Our reputation is built here. We do not have the option of moving to the next market after a bad job — this is where we live and work.

schema: FAQPage

Q: Is LI Roofing Co. licensed in both Nassau and Suffolk County? A: Yes. We hold active HIC licenses issued by both Nassau County and Suffolk County Departments of Consumer Affairs. Both are verifiable online at the respective county websites. We also carry general liability insurance ($2M aggregate) and active NYSIF workers compensation coverage — certificates available at any estimate appointment.

Q: What warranty does LI Roofing Co. offer? A: As a GAF Master Elite contractor, we can offer the GAF Golden Pledge warranty on qualifying projects — 25 years covering both GAF materials and our workmanship, with GAF directly backstopping the warranty. We also offer a 10-year workmanship warranty on all jobs. All warranty terms are in writing in your contract before you sign.

Q: What areas does LI Roofing Co. serve? A: We serve all of Nassau County and Suffolk County — from Valley Stream and Levittown in Nassau to Patchogue and Coram in Suffolk, including waterfront and North Shore communities. We do not limit our service area to one county or one end of the island.

Q: What does GAF Master Elite certification mean, and why does it matter? A: GAF Master Elite is the highest certification tier in the GAF contractor program, held by fewer than 3% of roofing contractors nationally. It requires annual renewal, verified insurance at required minimums, completed GAF installation training, and maintained customer satisfaction standards. The practical benefit to homeowners is access to the GAF Golden Pledge warranty — the strongest residential roofing warranty available, backed by GAF directly, not just the installing contractor.

Q: Does LI Roofing Co. offer free estimates? A: Yes. We provide free on-site roof inspections and written, itemized estimates within 48 hours for any Nassau or Suffolk County property. The estimate includes a full line-item breakdown — shingle product, underlayment, ice-and-water shield, flashing scope, permit, disposal, and workmanship warranty term. No single-line bids, no pressure to sign on the day of the estimate.