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Brick colonial with new shingles on the roof at sunset, two crew members still working up top

A new roof, finished to the last ridge

Roof replacement from Newark across New Jersey: full tear-offs, deck repairs where needed and new shingles, with the work explained from beginning to end.

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Guaman Builders job photoPosted Mar 2025

Drone view of roofers working on a tan shingle roof of an attached brick house, ladders against the wall

Your home is protected while we work

Tarps over the plantings and a debris trailer in the driveway keep the job contained, from tear-off to the last shingle.

See how a roof goes on

Guaman Builders job photo

Drone view of a crew re-roofing a long brick building: new underlayment on one side, the company truck and van parked beside it

Commercial and flat roofing

Commercial and multi-family buildings, and flat or low-slope roofs with EPDM rubber or modified bitumen (torch-down).

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Guaman Builders job photo

Drone view of a large house mid tear-off, blue underlayment going down over the deck and shingle bundles staged across the roof

Free estimates from a GAF Certified local team

Based in Newark since 2009. Tell us about the project and we’ll set up your free estimate, in English or Spanish.

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Guaman Builders job photo

Roofing, Siding & Gutters in Newark, NJ

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or call

973-703-8576

Your trusted roofing professionals in Newark, NJ

Owner-run since 2009, Guaman Builders LLC installs, replaces and repairs roofs for homeowners in Newark and nearby towns, along with siding and gutters. Your roof protects everything under it, so we check what your house really needs, explain every step clearly and keep you informed until the job is done. Estimates are free.

Roofing materials & brands

We install roofing products from established manufacturers.

GAF, Owens Corning and TAMKO are trademarks of their respective owners. Logos identify materials we install. GAF Certified™ and TAMKO Pro Certified are manufacturer programs we have joined; no Owens Corning certification, and no endorsement or partnership by any manufacturer, is implied. TAMKO Pro certification is renewed yearly: use the TAMKO link to confirm current status.

Drone view of an L-shaped house with its old tan shingle roof and a covered pool, rotated to line up with the next two shots
The same house from the pool side: old shingles removed, new plywood decking and the first rows of blue underlayment
The same house with blue synthetic underlayment across the roof and shingle bundles staged on top

Same house

Built right, from the deck up

A new roof is only as good as what’s underneath it. These drone photos of one home show the preparation most people never see, step by step.

  1. The worn roofPosted Oct 2025The original roof, worn and ready to come off. Removing it completely is what exposes the deck for inspection.
  2. Down to the deckPosted Nov 2025Down to the deck. Exposed plywood can be checked for moisture, water damage, rot and structural problems; new plywood goes in where it’s needed before anything is installed on top.
  3. Underlayment downPosted Nov 2025Underlayment across the deck adds a layer of protection beneath the shingles. Bundles are staged on the roof, ready for the next step.

Scroll, or drag the slider, to change the roof.

Photos posted by Guaman Builders on Google, rotated and scaled so the three shots line up; nothing else is changed. Dates are posting dates.

Our Services Roofing first, including flat and commercial roofs, then siding, gutters and decks built over flat roofs.

Something else on the outside of the house? Call and ask.

5.0 · What customers say on Google

from 22 Google reviews, every one five stars

Read all 22 on Google

What reviewers mention most: Value for money (4) · Siding (4) · Fast response (3) · Clean-up (3) · Workmanship (3) · Trustworthy (3)

Guaman Builders yard sign on a lawn: roofing, siding, gutters, windows, both phone numbers and the NJ license number
The yard sign, cropped from an owner photoPosted Oct 2024

  • “I actually chose Guaman over Lowe’s due to their professionalism and attention to details… My house looks newly built.”

    CJ W.Google review

  • “Luis and his team maintains my roof and installed new siding on the whole house. My neighbors have become their customers too.”

    Brenda D.Google review

  • “They came recommended by our handyman. He told us that he had used them to replace part of his own roof.”

    Yossi C.Google review

  • “Very clean and did a fantastic job at repairing and installing multiple new roofs on my property.”

    Josue D.Google review

  • “They responded quickly to my request and explained everything that they would do and how the process works.”

    Steven M.Google review

  • “I’ve worked with Luis on several projects over the years… especially with roofing and siding.”

    Mark R.Google review

  • “Have used several times. They are reliable, good quality, reasonable price, and good service.”

    Ed M.Google review

  • “Professional, responsible, and meticulous with every detail.”

    Laura E.Google review

Proudly Serving Northern & Central New Jersey

From our home base in Newark, Guaman Builders LLC provides roofing, siding, gutters and other exterior services in 49 communities across northern and central New Jersey. Tap a county on the map to see the towns we serve.

Request a free estimate973-703-8576

Contact us to confirm service availability in your area.

Counties served: Essex, Union, Hudson, Bergen, Passaic, Middlesex, Somerset, Morris, Sussex.

Map of New Jersey showing the Guaman Builders home base in Newark and service-area communities in Essex, Union, Hudson, Bergen, Passaic, Middlesex, Somerset, Morris and Sussex counties.

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Four quick steps. Guaman Builders gets your request and calls you back to set up a visit.

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We speak English and Spanish.

Guaman Builders LLC

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