Diamond Certified Companies are Rated Highest in Quality and Helpful Expertise.

  • Why this rating is the most accurate.
  • Our editors gather deep company info.
  • Performance is Guaranteed.

Diamond certified companies are top rated and guaranteed

Why Trust Diamond Certified Glass Companies Rated Highest in Quality?

Photo: B & L Glass Company (2013)

You are the customer. If your goal is to choose a glass company that will deliver high customer satisfaction and quality, you’ll feel confident in choosing a Diamond Certified glass contractor. Each has been rated Highest in Quality in the most accurate ratings process anywhere. And you’re always backed by the Diamond Certified Performance Guarantee. Here’s why the Diamond Certified ratings and certification process will help you find a top-rated glazier and is unparalleled in its accuracy, rigor and usefulness:

1) Accuracy: All research is performed by live telephone interviews that verify only real customers are surveyed, so you'll never be fooled by fake reviews.

2) Statistical Reliability: A large random sample of past customers is surveyed on an ongoing basis so the research results you see truly reflect a Diamond Certified company’s top-rated status.

3) Full Disclosure: By clicking the name of a company above you'll see the exact rating results in charts and read verbatim survey responses as well as researched articles on each qualified company.

4) Guaranteed: Your purchase is backed up with mediation and the Diamond Certified Performance Guarantee, so you can choose with confidence.

Click on the name of a Diamond Certified company above to read ratings results, researched articles and verbatim customer survey responses to help you make an informed decision.

More than 200,000 customers of local companies have been interviewed in live telephone calls, and only companies that score Highest in Quality in customer satisfaction–a 90+ on a 100 scale–as well as pass all of the credential-based ratings earn Diamond Certified. By requiring such a high score to qualify, the Diamond Certified program eliminates mediocre and poorly performing companies. Read detailed information about the ratings and certification process.

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SELECTED PHOTOS FROM THESE TOP RATED COMPANIES

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INDUSTRY INFORMATION AND RESEARCHED ARTICLES BY THE DIAMOND CERTIFIED RESOURCE

  • Andersen

  • Marvin

  • Milgard

  • Baldwin

  • Emtek

  • Fleetwood

Andersen Window Glass
Pilkington Glass
LOF Glass
AGC Flat Glass
Schott Glass
AMA Glass
Milgard Window Glass
Simpson Window Glass Replacement
Cameron Glass
Euroglass Corporation
Visteon Glass
Western Custom Glass
Viracon Glass
IWC Glass Window Replacement
Mercer Glass
Velux Residential Glass
Glatec Glass
Guardian Industries Glass
Fleetwood Glass Replacement
Integrity Window Glass
Marvin Window Glass

home glass replacement
broken glass repair
home glass service
commercial glass service
flat glass
glass panels
glass table tops
glass glazing
invisible glass
tinted glass
greenhouse glass
sliding glass door replacement
custom glass
glass table repair
glass shower replacement
glass blocks
glass shelf repair
glass installation
curved glass
glass pane installation
laminated glass

Agua Caliente
Alexander Valley
Annapolis
Asti
Bloomfield
Bodega
Bodega Bay
Boyes Hot Springs
Camp Meeker
Cazadero
Cloverdale
Cotati
Duncans Mills
El Verano
Eldridge
Fallon
Fetters Hot Springs
Forestville
Fort Ross
Freestone
Fulton
Geyserville
Glen Ellen
Graton
Guerneville
Guernewood
Healdsburg
Jenner
Kenwood
Lakeville
Larkfield
Lytton
Mark West
Monte Rio
Occidental
Penngrove
Petaluma
Rio Nido
Rohnert Park
Roseland
Russian River
Russian River Meadows
Salmon Creek
Santa Rosa
Schellville
Sebastopol
Sheridan
Sonoma
Stewarts Point Rancheria
Temelec
the Geysers
Sea Ranch
Two Rock
Valley Ford
Villa Grande
Vineburg
Windsor

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Americas Glass Association (www.americasglassassn.org/)
Association of Clay and Glass Artists of California (ACGA) (www.acga.net/)
Auto Glass Safety Council (AGSC) (www.agrss.com/)
Bureau of Automotive Repair (BAR) (www.bar.ca.gov/)
Glass Association of North America (GANA) (www.glasswebsite.com/)

Contractors State License Board (CSLB) (www.cslb.ca.gov/)
Independent Glass Association (IGA) (www.iga.org/)
National Glass Association (NGA) (www.glass.org/)
National Windshield Repair Association (NWRA) (www.nwrassn.org/)
Whole Building Design Guide (WBDG) (www.wbdg.org/)

Know What You Want
What to Ask Before Selecting a Sonoma County Glass Company

Because glass comes in so many products, you need to be sure you are looking in the right place. Before you hire a glass company or glass artist, it's important to be able to identify exactly what you want.

Are you looking for custom-cut glass for a shower or tabletop? Do you want to add light and ventilation via a skylight or sun tunnel? Are you looking for new doors or windows for your home? Are you looking for new doors or windows for your home? Whatever you are looking for, whether for home or office, whether in Windsor, Santa Rosa, Petaluma, Healdsburg, Rohnert Park, Guerneville, Cotati, Cloverdale, or Sonoma, the better you understand what you are looking for, the more you will be able to express it. You might find it useful to draw up a list of questions and use them to narrow in on precisely what you want. Some questions might include the following.

  • Do I want a Diamond Certified glass company that is rated best in quality and backed by the Diamond Certified Guarantee?
  • Am I looking for a custom glass table top?
  • Do I need custom doors for my new shower enclosure?
  • Do I need replacement glass?
  • Do I want new or replacement glass for doors with glass? If so, are they interior or exterior doors?
  • Does the glass need to be textured, tinted or another type of specialty glass?
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What To Ask In Person
Questions to Ask Sonoma County Glass Companies in Person

You and your Sonoma County glass company representative may not actually meet in person. Sometimes all the work can be done over the phone. Other times, you will go in to select a specific glass that you want. You are likely to meet auto glass representatives in person, at least to make access to your car possible.

Or you may work with a glass artist to get exactly the piece of decorative glass you want. No matter what your needs, if you do meet your glass company professional in person, you may want to already have a list of questions that you can ask. With a list drawn up, you won't feel flustered, put on the spot, or forget the questions you want to ask.

  • If I have an independent artist prepare glass work for my door or window, what is the process for getting it installed in the door or window? Is this a process you have done before?
  • Do you have textured glass samples that I could look at?
  • Do you have installers who will put in my replacement glass?
  • Can you offer glass repairs?
  • Who will perform your glazier services? A glass company employee or a subcontractor?
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  • What To Ask References
    Questions for References of Glass Contractors in Sonoma County

    It's best to choose a Diamond Certified glass company because all certified companies have passed an in-depth ratings process that most other companies can't pass. If you want quality from a glass company in Sonoma County and the greater Bay Area, you can have confidence choosing a Diamond Certified company. Diamond Certified reports are available online for all certified companies. And you'll never be fooled by fake reviews. That's because all research is performed in live telephone interviews of actual customers.

    If you do call Sonoma County glass contractor references on your own, specifically ask for a list of the glass company's 10 most recent customers. This will help avoid them giving you the names of only customers they know were satisfied.

    • What did you have the glass company do for you?
    • Were you satisfied with the work the glass company did? Why or why not?
    • If you had replacement glass put in, did you notice improvements in your own comfort in the rooms were there fewer drafts, did you feel less cold coming off the windows when you stood near them?
    • If you ordered a custom size for your shower doors, was the glass cut to the proper size? Or were there problems during installation.
    • When you had the custom-cut glass, were there any marks left on it from the fabrication? If so, was the company skilled at placing them so they didn't show?
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  • Review Your Options
    Find and Hire a Good Glass Company in Sonoma County

    The Diamond Certified symbol has been awarded to companies that scored Highest in Quality in an accurate ratings process.

    Before deciding on the best glass company in Sonoma County for you, consider the following questions.

    • Does the glass company offer the level of customization that you need? For example, will it cut custom sizes? If you want artwork in your cabinet doors, is that available from the glass company?
    • Can the company clearly explain the benefit of each recommendation it makes for glass repairs or replacement glass?
    • Is the Sonoma County glass company properly licensed by the state of California with a glazing contractor's license?
    • Does the glass company provide the specific kind of glass that you need?
    • Does the local glazier or replacement glass installation company demonstrate a commitment to training?
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  • How To Work With
    Before You Decide on a Sonoma County Glass Company

    A small investment of effort can make finding a Sonoma County glass company relatively pain free. You need to decide what you're looking for and which companies can supply it. Once you've identified your basic problem, think about all the questions you have. You may not know the answers to all of your questions. But write down all of your questions so that you can ask them of your glass professional or Sonoma County glazier.

    Gather some basic information before talking to your Sonoma County glass professional. For replacement glass, you or your contractor should know the dimensions of the glass to be replaced and how many pieces of new glass you'll need. If you need custom work for a shower enclosure, tabletop, or mirror, know the dimensions you need.

    Look for Sonoma County glass companies that place a value on standards and training. Ask about the glazier company's training policy. Ask what credentials they hold and what standards they follow.

    Now That You've Settled on a Sonoma County Glass Company
    Communication should be your top priority, now that you know the Sonoma County glass company you want to hire. Clearly and in writing outline the services you expect from the Sonoma County glass company. Are they providing a product? Or are they also installing it? Or is your own contractor doing the installation? What are the provisions if something gets damaged during transit or installation?

    Make sure each party has the same expectations. As the customer, are you just choosing what you like and allowing your contractor to handle the details of measurement and installation? Or are you making yourself responsible for measuring, etc.?

    Consider your own role and make sure that everyone involved understands his or her own role. No matter where your new glass project is happening in Sonoma County, whether in Windsor, Santa Rosa, Petaluma, Healdsburg, Cloverdale, Sonoma or Rohnert Park, confusion about responsibilities, which stems from poor communications, is one of the most certain ways to have a frustrating project.

    Never start without a detailed, written estimate and contract from the Sonoma County glass company. There should be clear information about the materials to be provided, any installation labor, if it is provided, timelines for delivery, and details of who will be working on the project if subcontractors are involved.

    Making the Job Run Smoothly
    A little personal guidance from you and investment of your time can smooth out the project. Make yourself available as necessary. For example, whenever glass replacement or new glass installation is being done, be available to answer questions and respond to questions promptly to prevent unnecessary delays.

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  • Be a Good Customer
    How Can You Be a Good Glass Company Customer?

    It's the glass company's responsibility put in quality glass using the best possible installation techniques. But you play a big part in the success of your glass company, too. Here are a few simple steps you can take to be a good customer when hiring a Sonoma County glass company.

    • Be clear and upfront with the glass company. Let them know what you want from your glass company, the long-term outcome you're expecting and specific ways they can satisfy your expectations.
    • Remember, a friendly smile goes a long way!
    • Before you hire a glass company in Sonoma County, restate your expectations and goals, and reiterate to the glass company representative your understanding of the agreement. Most problems with local glass companies occur because of a breakdown in communication. By being clear about your expectations and theirs, you can avoid most conflicts.
    • Ask your glass company if you should call to check on the progress or if he will call you with updates.
    • Be sure your service representative has a phone number where they can reach you at all times while they're installing the glass. The work will move along more smoothly if your glass company can reach you for any necessary updates, questions or work authorizations.
    • When your contractor contacts you, return calls promptly to keep the glass company on schedule.
    • Pay for the glass company's work promptly.

    Why would you want to be a good customer? Glass companies in Sonoma County appreciate customers who are straightforward, honest and easy to work with. Your good customer behavior sets the tone from your end and creates an environment conducive to a good relationship. Things may very well go smoother and any problems may be more easily resolved.

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Check The Work
Monitor the Sonoma County Glass Company's Work Using Contracts and Invoices

You must not start a project without a written contract or invoice from your local glazier. The document must be detailed enough that you can use it to verify that the new glass, installation materials and labor were delivered as specified.

When the glass company provides materials, such as new glass and replacement glass, make sure the delivered product matches what you ordered, that the count of delivered pieces is correct, and that the delivery was on time. If the glass company is also providing labor for installation, be sure the installation is completed as designed. If not, be sure to write down the changes that vary from the original design. Check that the timeline was maintained, or that there are written agreements that the timeline will vary from the original.

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Written Warranties
Ask Your Sonoma County Glass Company for the Necessary Warranties

Get warranties for the new glass and for the glass installation services. No matter whether the products and the labor come from one or many local glass companies, you need to ask for the workmanship warranty as well as the product warranty. For the labor, or workmanship, most contractors supply a one-year warranty.

California has laws that, depending on the problem, allow you to make claims for a longer period. For example, if physical harm is caused by improper workmanship on your new glass or replacement glass, there is a virtually unlimited amount of time to ask for redress.

Also make sure you know how and when you can take advantage of the warranty. Find out if that warranty is available only at the local glass shop, or if there is a network of glass shops that participate. You may want to find out if the warranty transfers if you sell your home or the item with the new glass or replacement glass.

Above all, the most critical thing when you are getting glass work done in Sonoma County is to be sure that you have the warranties for both the product and the glass installation labor.

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Top 10 Requests
Top Service Requests for Glaziers and Glass Companies in Sonoma County

Glass products are in great demand. No matter the kind of glass you need, you will find a glass company to suit you. You may have to head out for a little search in Sonoma County, taking yourself to glass shops in Windsor, Santa Rosa, Rohnert Park, Healdsburg, or Petaluma, or to other areas like Guerneville or Sebastopol. But in the end, you should be able to find a glass company that supplies just the glass you need decorative, insulating, or for any application you can think of.

New Cabinet Doors
Cabinets house both precious and ordinary items. Some want clear glass for cabinet doors, so that the treasures inside are displayed. Others opt for colored glass or stained glass, or other decorative ways to make the cabinet itself a work of art.

Decorative Glass
Decorative glass is usually used for display. It may be freestanding pieces like blown glass vases, bowls, sculptures, or the like. Or decorative glass may be found incorporated into windows, doors, or cabinets as stained or etched glass. You may be a glassblower yourself and looking for tools or classes on how to improve you glassblowing technique.

Glass Repairs in Sonoma County
Glass repair is the repair of cracks, chips or other flaws in existing glass surfaces. Many glass contractors in Sonoma County offer glass repair services. This is often much less expensive than new glass replacement.

Tabletops
Beautiful tables can be wrought from glass tops set into frames of wood or metal, or other materials. Tabletops sometimes need replacing, too, if they are scratched or otherwise damaged.

Insulation Glass
We often ask that our structural glass provide insulation. We want windows that will keep any heat or cooling inside, rather than allowing it to dissipate through a single pane of glass. The glass industry has developed special windows that meet this need, often by sandwiching an air space between layers of glass. Such windows also work to insulate us from noise transmission.

Precision Glass
Precisely ground glass, with a specific thickness and surface roughness is used in an array of products. From vision optics, to medical devices, even to the infrared and night-vision goggles used by the military all require very specially ground glass.

Mirrors
Mirrors run throughout our houses and businesses. Of course, you can always get a kit and silver a pane of glass yourself, but it's so much easier to seek out an experienced mirror maker and get exactly what you want.

New Front Doors
You may want glass sliding doors to open out onto a patio or deck. Or you may want a mostly wooden door, with some glass set into the door. This glass may be clear glass, or you may opt for tinted or art glass for your door. The options are really limited by your imagination.

Replacement Glass
Replacement glass can be installed by a glazier or glass company in Sonoma County.

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Glossary Of Terms
Glossary of Glass Terms

Considering how critical glass in its many forms is to us, we should be able to talk with our glass companies about exactly what we want. Use the glossary to help you understand some of the terms your glass merchant may use that you may not be familiar with yet.

The more technical your glass needs, the more precise your vocabulary is likely to get. These terms are most useful for residential glass company customers.

acrylic
A thermoplastic occasionally used for glazing. It is shatter resistance, weather resistance, and gives good clarity.

air infiltration
Refers to the air that is able to enter a building through windows, doors, cracks.

annealed glass
Normal glass that has not been treated to improve durability or shatter-resistance.

bay window
Refers to a set of three or more individual windows that project from a building at different angles.

bead
Refers to a material used as a compound or sealant that keeps the glass in position.

bed
The material – compound or sealant – that us used to attach the glass to the frame or sash. I tis usually the first step in setting the glass.

Also known as: bedding

block
A device used to help the glass keep in position.

buttering
Putting a sealant or other compound on a glass surface prior to placing the glass in position.

butyl
Synthetic rubber used to seal.

casement
A casement refers to a glass that is longer vertically than it is horizontally. A casement window often opens to the outside, sometimes to the inside.

CFM
A measurement of the flow of air

Also known as: cubic feet per minute

compatibility
Refers to the ability for two materials or more to be in close, permanent association for an unspecified length of time without harming each other.

conduction
Refers to the transfer of heat from a warm surface through a material to a cool surface.

convection
Refers to the transfer of heat through moving air or fluid.

CFR
A measure of the ability to avoid the creation of water through the meeting of warm and cool on one surface.

Also known as: Condensation Resistance Factor

desiccant
A material used to absorb moisture; in a window, it would be used in the air space between layers of glass.

double glazing
Refers to two layers of glass that surround a cavity filled with air. Double-glazing is used to prevent heat transfer and noise transmission.

Also known as: double glazed

double-hung window
A window that has two parts operating in the same frame. The upper and lower halves can both move up and down.

glazing
Refers to installing glass into a frame.

Also known as: glaziers

float glass
Glass that is created by floating the molten glass material on a bed of metal. It has a brilliance that matches sheet glass without any polishing or grinding.

laminated glass
Laminated glass consists of layers of glass combined by layers of clear plastic. When broken, the glass clings to the plastic. Useful for sound reduction and overhead installations.

lite
Refers to a layer or pane of glass.

mullion
A structure that connects windows or patio doors.

prime window
A window put in during the first part of the construction; it forms a integral piece of the structure.

rabbet
Refers to am L-shaped, two-sided recess in a frame or sash designed for the glass to fit into.

sash
In a window, the glass and the framing pieces attached directly to the glass.

spandrel glass
A kind of glass that is strengthened through heating and which has a coating of colored ceramic on the surface.

tempered glass
Tempered glass is glass that has been strengthened through heating. One advantage is that on breaking, the bits are small, rounded pieces instead of the sharp shards of normal glass. It is often used for entrance doors, patio doors, and wherever safety is a concern.

trombe wall
A concrete wall covered in glass that us used to passively collect and store heat. The heat can then radiate either outdoors or to the interior.

U-value
The U-value is a measurement of how well components used in buildings conduct heat. It is usually used to refer to a window’s ability to retain the indoor heating or cooling. A lower number is more desirable.

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Frequently Asked Questions
FAQ for Local Plate Glass Installation Companies

Q: Why choose a Diamond Certified Glass?
A: Diamond Certified helps you choose a glass company with confidence by offering a list of top-rated local companies who have passed the country’s most in-depth rating process. Only glass companies rated Highest in Quality earn the prestigious Diamond Certified award. Most companies can’t pass the ratings. American Ratings Corporation also monitors every Diamond Certified company with ongoing research and ratings. And your purchase is backed by the Diamond Certified Performance Guarantee. So you’ll feel confident choosing a Diamond Certified glass company.

Q: When replacing my windshield or other auto glass, what is OE or OEE glass?
A: OE refers to “original equipment”, while OEE is an “original equipment equivalent. The OE is what comes with your vehicle, installed by the manufacturer. Though, of course, the vehicle manufacturer may source parts such as windshields from other companies, even in the original vehicle. An OEE glass will be of the same quality as the originally installed part, but it may be from a different manufacturer.

Q: What is AGRSS?

A: AGRSS is now called the Auto Glass Safety Council. It is an organization that was developed to help achieve safe auto glass replacement. The Auto Glass Safety Council is an accredited American National Standards Institute (ANSI) standards creation organization, which means it is allowed to define standards to ensure the best education and procedures, as well as product evaluation in the field of auto glass replacement. The ARGSS standard defines the best practices for the industry. You would want to look for auto glass replacement companies who are aware of it and comply with it. 

Q: Why is there water on the interior of my windows?
A: We are talking here about the water that forms on the interior side of a window, not any water that may form between the panes of a multi-pane window. The water is condensation from the reaction of cold air outside and warm air inside. Often, the condensation results because the interior humidity has been raised to take account of the dryer air that the cold brings. Reducing the humidity in the house should reduce the condensation.

Q: There is water between the panes of my double-glazed window. Is that a problem?
A: Double-glazed windows consist of layers of glass surrounding a cavity. Sometimes the cavity is filled with gas, other times with air and possibly a desiccant to dry out any moisture that may happen. If the moisture is in a place that you cannot reach it to clean it, this means that the seal between the window layers is no longer holding, and the windows should be replaced.

Q: When do I have to get the glass for my new shower?
A: Although when you get the glass for your new shower will vary based on your circumstances, it is often one of last pieces you get for your bathroom. Once the bathroom is mostly done, one approach is to measure the spaces where you will need the shower doors, then go to a glass company with the specification. The glass company will help you choose your glass – there is clear glass, but you might want to choose one of the more opaque styles of glass. Your glass company will also work with you to determine if you want any special edging on your glass. The specifications are then sent off to a manufacturer, and the glass is produced, ready to be installed. Of course, your contractor may do some of this work for you. But generally, you can leave glass selection till close to the end of your bathroom design and installation.

Q: What is Low-E?
A: Low-E refers to low-emittance. A low-emittance coating can be applied to glass and is almost invisible. The coating reduces the ability of heat to radiate through the glass. Thus, the glass admits plenty of light but not plenty of heat.

Q: If only one side of a dual-pane window is broken, why do I have replace the whole thing?
A: Dual-pane windows operate and are manufactured as a unit. The two sheets of glass are separated by a space. The space includes a desiccant to trap moisture. If even one side of the glass is broken, the unit is no longer a unit, the desiccant can absorb so much water that it becomes useless. Whenever any component of a dual-pane window is compromised – from glass to seal – the entire unit is compromised.

Q: Can you cut tempered glass?
A: The short answer to this question is no. If you try to cut tempered glass – because you have the wrong size, for example, the glass will shatter. Some claim that you can heat the glass to return it to its annealed state – the state it had before it was originally tempered, cut the glass, then re-temper the glass. .

Q: What is a panoramic roof?
A: Car makers are developing a panoramic roof. It is like a sun roof, but much larger. It brings light into the car. Some liken the panoramic roof in the car to the concept of indoor-outdoor living in the home. The panoramic roof brings the outdoors into the car’s cabin. In Europe, the panoramic roof is often fixed – it does not open. However, car makers have discovered that in America, buyers expect the panoramic roof to open.

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