A custom mirror is cut to your wall, not pulled off a shelf. Measured and installed by Preferred Glass & Windows in the Santa Clarita metro — AAMA-certified, no subcontractors, since 1969.
A mirror cut to the wrong size or mounted on the wrong substrate won't stay flat or clear for long. Walls shift, backers vary, and humidity hits some rooms harder than others. At Preferred Glass & Windows, we check all of it before anything gets cut. No sizing from photos, no assumptions about what's behind the wall. We've installed full vanity mirrors, continuous gym walls, closet door panels, entryway mirrors, and oversized bathroom applications. Every one gets measured on-site and fabricated to the actual conditions of the room.


Edge finish affects how the mirror reads in the room. We fabricate to your space and offer several options:
The mounting method determines how long a mirror stays secure and clear. Adhesive-only works on flat, stable walls. On uneven drywall or tile, we use mechanical supports, such as clips or J-channels, to distribute weight properly. Santa Clarita bathrooms with limited ventilation put real moisture pressure on mirror backing, so we evaluate the substrate and exposure before recommending a method. The result is a panel that stays flush and distortion-free.
Small edge chips can sometimes be managed. Larger cracks and blackened or cloudy edges almost always need replacement — once moisture reaches the backing, cleaning won't stop it from spreading. We'll tell you straight which option makes sense.


Preferred Glass & Windows has been a trusted provider in the Southern California area since 1969 and the team still handles every project in-house. We're AAMA-certified, fully licensed, and insured. For custom mirror work, that matters when walls aren't flat, rooms run humid, or a full-wall installation requires seams to land exactly right. If something isn't right, we fix it.
Yes. We map all fixture locations before fabrication so cut-outs are placed correctly. A cut-out positioned off-center creates stress at the corners and risks cracking over time. Getting those locations right before the panel is cut is how we avoid that.
That is backing deterioration caused by moisture reaching the edge of the mirror. It is common in bathrooms with limited ventilation. Once it starts, it spreads. Replacement with a properly mounted and edge-sealed panel is the right fix.
In some locations, yes. California building codes require safety glazing near walking surfaces and in areas where impact risk is elevated. We check those requirements during the site visit and specify the correct glass for each location.
Yes. Full mirror walls require careful seam placement and secure mounting so panels sit tight and stable. Vibration from exercise equipment can cause movement at seams over time if the mounting is not done correctly. We evaluate the wall and floor conditions before recommending a layout.
Apply cleaner to a cloth first, then wipe the glass. Spraying directly onto the mirror lets liquid run to the edges and seep behind the panel. That moisture is what attacks the backing over time. A soft cloth and a gentle glass cleaner applied carefully is all you need.
I loved going with Preffered Glass as it was recommended by a family friend to fix my antique hutch cabinet. I spoke with Courtney and I needed 2 new pieces for my doors. She was great she got the measurements I needed and what I wanted. She got the work done same day. And when I installed the pieces one needed to be cut a little more because it was a little to big. She personally went to the back and cut the piece I needed so it can fit properly. 10 out of 10 recommend for all your Glasswork needs.
Preferred Glass & Windows is an amazing company to work with beginning to end on any project! Scott came to my house to give me a quote on shower doors for my master bath and on all my windows. He was extremely professional and helpful and made sure everything went smoothly! Courtney at the front desk was super friendly as well and very knowledgeable and she had no problem answering any of my questions! The customer service was top tier and the installation job was even better! I will definitely be a returning customer.
We had a broken window called for service to replace it. They came the next day measured the window said it would be a week or two to get the window call the next day. The window came in sooner than expected, they came that afternoon and installed it it came out great very impressed with their level of service. Thank you very much!!!
Get Your Free Custom Glass Estimate Today! Tell us your vision and we'll take it from there. Design, fabrication, and installation all handled for you. Proudly serving Santa Clarita, Valencia, and the greater San Fernando Valley for over 50 years.