
A-1 Glass
A-1 Glass provides replacement glass and serves residential clients throughout California’s Central Valley and commercial clients throughout California. The owners have served the Modesto area for more than 40 years.
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Business Highlights
- A-1 Glass is locally owned and family-owned.
- A-1 Glass is fully insured and bonded.
- A-1 Glass is an accredited member of the Better Business Bureau.
- A-1 Glass is a Milgard Authorized Dealer.
- Milgard windows are backed by a full lifetime warranty.
- A-1 Glass lists a 10-year limited warranty for Diamond Fusion.
Service Area
California’s Central Valley, including Modesto, Turlock, Ceres, Riverbank, Oakdale, Patterson, Salida, Newman, Waterford, Hughson, Shacklford, Bret Hart, Keyes, Bystom, Empire, Denair and Del Rio; commercial work throughout California.
Public local listing. A-1 Glass is one of 11 window installers ProsGrade lists in Modesto, California.
12 services listed, including Replacement windows, New-construction windows and Commercial windows. Open weekdays, closed on weekends. 38 reviews.
- Verified listing details
- Service information
- Customer review signals
- Photo gallery
- Public contact information
- Published local profile
How This Business Compares
How A-1 Glass compares with the other 10 window installers on ProsGrade in Modesto, using public Google ratings and review counts.
- One of 11 Modesto window installers on ProsGrade.
Services Covered
12 services- Replacement windowsCustom sizes and a broad range of operating styles.
- New-construction windows
- Commercial windowsWindow styles, materials, glass options and hardware.
- Milgard windows and doorsTuscany and Style Line vinyl; Ultra and WoodClad fiberglass.
- Screen doorsSliding screen doors.
- Framed shower doorsGlass with metal reinforcement.
- Frameless shower doorsTrackless design; glass protected against water spots.
- Window sunscreensOn-site measurements; custom manufacturing in its own shop and professional installation.
- Commercial storefronts
- Hollow metal door repair
- Skylights
- Custom glass productsTabletops, wardrobe doors, mirrors and custom glass orders.
Reviews
What customers say
Customers praise the friendly staff, and one credits Robin with helping get the job done in a timely manner. Another customer says a technician came right away and put a sliding door back on its track. Experiences were mixed: one customer says a jewelry box was returned with dangerous broken glass, while another praised the installation and workmanship but found the front-desk interaction rude.
Customer Reviews
Brent Wampler
So professional. Stan was super friendly and very knowledgeable. I never thought my slider could be fixed after tree root damage. Great Sevice and awesome results. Came sooner than I expected. Very pleased.
Patricia Hitch
Raquel Lugo
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Frequently Asked Questions
Does A-1 Glass offer free estimates?
Yes. A-1 Glass offers free estimates for home and business glass projects.
Can A-1 Glass schedule evening or weekend appointments?
It lists weekday hours from 8 a.m. to 5 p.m.; nights and weekends are by appointment.
How does A-1 Glass help with window selection?
Staff guide product selection based on each customer’s needs and budget.



