New Jersey's Trusted Roofing & Siding Experts
Family-owned since 2000, Alte Roofing protects your most valuable asset with premium materials, master craftsmanship, and warranties that stand the test of time.
- GAF Master Elite® — Top 2% of Roofers
- A+ BBB Rated
- Family-Owned Since 2000
- Licensed & Insured
Complete Roofing & Exterior Services
From a single repair to a full exterior transformation, our certified crews handle it all with the same craftsmanship and care.
Roof Replacement
Full tear-off and replacement with GAF architectural shingles, backed by industry-leading warranties.
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Fast, reliable repairs for leaks, storm damage, missing shingles, and flashing failures.
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James Hardie® fiber cement and premium vinyl siding that transforms and protects your home.
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Seamless gutters and guards that channel water away and keep debris out.
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Energy-efficient replacement windows that cut drafts and lower your bills.
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GAF Energy solar shingles that integrate directly into your new roof.
Learn moreResidential Flat Roofing
Low-slope and flat roof systems for homes — installed with the GAF Liberty™ self-adhering SBS membrane, no open flame required.
Learn moreFlat & Commercial Roofing
TPO and EPDM systems engineered for durability on flat and low-slope buildings.
Learn moreCommercial Roof Repair
Rapid leak repair and maintenance to protect your operations and inventory.
Learn moreRoof Coating & Restoration
Reflective coatings that extend roof life and cut cooling costs.
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The Difference Is in the Details
You're not just buying a roof — you're trusting a crew with your home. Here's why New Jersey homeowners choose Alte again and again.
GAF Master Elite®
Certified installer — a distinction earned by only the top 2% of roofing contractors in North America.
25+ Years of Excellence
A family-owned reputation built on thousands of roofs and consistently 5-star reviews.
On-Time, On-Budget
Clear quotes, dependable schedules, and clean job sites — no surprises, ever.
- Free, no-pressure inspections & estimates
- Premium GAF & James Hardie® materials
- Industry-leading manufacturer warranties
- Financing options available
A Simple, Stress-Free Process
From first call to final inspection, we make getting a new roof straightforward.
Free Inspection
We assess your roof and exterior, then walk you through exactly what we find — no pressure.
Clear Estimate
You get a detailed, transparent quote with material options and financing if you need it.
Expert Installation
Our certified crews complete the work on schedule, protecting your property throughout.
Final Walkthrough
We inspect the finished job with you, clean up completely, and register your warranty.
Recent Projects Across New Jersey
Real roofs, real homes, real results. Browse a few of our recent installations.
Hackettstown, NJ
GAF Timberline HDZ Replacement
Flemington, NJ
Complete Roof Replacement
Sparta, NJ
Architectural Shingle Roof
Phillipsburg, NJ
Storm Damage Restoration
Long Valley, NJ
New Roof Installation
Randolph, NJ
Full Exterior Remodel — Before & After
What Our Customers Say
We've earned hundreds of 5-star reviews by treating every home like our own.
“Alte replaced our entire roof in two days and left the property spotless. The crew was professional, and the GAF warranty gave us real peace of mind. Couldn’t recommend them more.”
“From the free estimate to the final inspection, everything was clear and on schedule. Our new James Hardie siding completely transformed the house.”
“We had a bad leak after a storm and Alte came out fast, found the issue, and fixed it right. Honest, fair pricing and great communication throughout.”
“Top 2% GAF Master Elite is the real deal. The install quality and attention to detail on our roof replacement were outstanding.”
Trusted Partnerships
Our Partners
We install with the industry’s most respected brands and hold their top certifications — so your project is backed by the strongest manufacturer warranties available.
Proudly Serving New Jersey & Eastern Pennsylvania
From Warren, Hunterdon, Morris, Sussex, and Bergen counties in NJ to the Lehigh Valley and Poconos in PA — if you're in our neighborhood, we've got you covered.
Ready to Protect Your Home?
Get your free, no-obligation estimate today — most quotes within 24 hours.