Fog between window panes is a failed seal — cleaning the surface won't fix it. Insulated glass unit replacement for homes and businesses throughout Santa Clarita by Preferred Glass & Windows — AAMA-certified, no subcontractors, since 1969.
Santa Clarita's summers put real stress on window seals. The air chamber inside an IGU expands in the heat and contracts at night — that daily cycle wears down the perimeter seal over time. South- and west-facing windows take the most punishment, and homes at higher elevations deal with wider temperature swings than the valley floor. At Preferred Glass & Windows, we size every replacement to the actual frame opening. Original windows in older homes rarely match current standard dimensions, and frames in those homes have often shifted with the structure over decades. Newer construction has its own variables — sash pocket depth and frame tolerances need to be confirmed before the replacement unit is ordered. We check all of it on the site visit.
An IGU consists of two or more panes of glass separated by a spacer to create a sealed air chamber. This chamber is typically filled with argon gas to slow heat movement. When the perimeter seal fails, moisture enters the unit, leading to:
Replacing a failed IGU is an opportunity to improve your window’s energy performance. We offer several upgrades tailored to the local climate:
With over 55 years in the glass trade, Preferred Glass & Windows is a trusted name in Santa Clarita. We are AAMA certified, fully licensed, and insured. We never subcontract, and every installation carries a lifetime guarantee. Our commitment to quality has earned us top rankings from local readers and major publications across the region.
Santa Clarita's hot summers cause the sealed air chamber inside an IGU to expand. Cooler nights cause it to contract. That daily cycle puts repeated stress on the perimeter seal and wears it down over time. South and west-facing windows and homes at higher elevations like Castaic tend to fail faster because of greater heat exposure and temperature swing.
Yes. In most cases the frame and sash stay in place. We remove the failed unit and install a new one in the existing frame. You get clear, properly insulated glass again without the cost of a full window replacement.
Not if the unit is built and installed correctly. IGU fogging happens when the perimeter seal fails. We use quality spacers and seals rated for Santa Clarita's heat conditions. A properly sealed unit installed in a sound frame will stay clear for years.
A double pane unit has two glass panes with one sealed air chamber. A triple pane unit adds a third pane and a second sealed chamber for better insulation and noise reduction. Triple pane is worth considering near busy roads or at higher elevations, but the frame has to support the added weight. We check that during the site visit.
We inspect and confirm dimensions on the site visit and place the order after that. Most installs are completed in one visit once the unit arrives. From first contact to finished install, the process typically takes one to two weeks.
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.
