GN Exteriors
GN Exteriors is a residential roofing contractor in Randolph, serving Boston and the South Shore. Guillermo Naranjo founded the company in 2002.
Business Highlights
- GN Exteriors is family-owned and operated.
- GN Exteriors describes itself as fully licensed and insured.
- GN Exteriors has a ShingleMaster™-certified crew.
- It has Shingle Quality Specialist™ supervisors.
- GN Exteriors offers emergency roofing services.
- GN Exteriors offers material and workmanship warranties for roofing work.
Service Area
Randolph, Boston and the South Shore.
Featured on ProsGrade. GN Exteriors is one of 10 roofers ProsGrade lists in Weymouth, Massachusetts.
11 services listed, including Roof repair and replacement, New roof installation and Preventative maintenance. Open 24 hours, 7 days a week. Rated 5.0 from 86 reviews.
- Verified listing details
- Service information
- Customer review signals
- Photo gallery
- Public contact information
- Published local profile
How This Business Compares
How GN Exteriors compares with the other 9 roofers on ProsGrade in Weymouth, using public Google ratings and review counts.
- Ranks in the top half of the 10 Weymouth roofers on ProsGrade by Google rating and review volume.
- Rated 5.0 on Google, at or above the 4.9 average of other Weymouth roofers on ProsGrade.
- One of 10 Weymouth roofers on ProsGrade rated 4.7 or higher from at least 10 reviews.
Services Covered
11 services- Roof repair and replacementLeaks, storm damage and general wear; tear-off and replacement.
- New roof installationNew construction and home renovations.
- Preventative maintenanceScheduled inspections and care.
- Asphalt shingle roofingDeck protection, flashing, venting, and hip-and-ridge capping.
- EPDM rubber roofingEPDM membrane, seam tape and cover tape.
- Metal roofing
- SidingVinyl siding in horizontal and board-and-batten styles.
- Skylights and shadesVELUX installation, integrated shades, repair and maintenance; solar-powered models.
- Gutters and leaf guardsCustom-cut one-piece systems, angled downspouts, leaf guards and covers; repairs and replacements.
- Decks
- Solar panel sales and installation
Reviews
What customers say
Customers praise the crews’ professionalism and clean work. One homeowner also says the team quickly put right a small issue, while a plumbing-vent seal problem for another was assessed the same day and repaired the following day.
Customer Reviews
AJ Catanese
Keryl Hayes
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Frequently Asked Questions
How does GN Exteriors handle a roofing estimate?
It offers a free roof inspection to identify damage or deterioration, then provides a detailed estimate with material options.
Does GN Exteriors offer financing?
Financing is available for roofing, siding, windows, gutters, and exterior renovations. Approval is subject to credit approval, and rates and terms may vary based on creditworthiness and lender approval.
Does GN Exteriors remove old siding?
Yes. It removes and disposes of existing siding as part of the project.








