This is an excellent company. The owner, Shannon, arrived on time, finished 9 screens in record…read moretime, and kindly helped me tape up a broken window. You just can't beat the quality, value, and service. Highly recommended!

If you're in need of screen replacements OnSite is the company! From initial contact bid with…read moreShannon, communication with job coordinator Tracy & job completion by Max they are the very BEST in providing excellent quality service to their customers before & after job completion. Thanks again! Elaine, Crystal City Mo.

Had all new windows put in a while back. I tweaked one while cleaning it and couldn't get it…read moreclosed. I called and got an immediate response. They sent Ben out to fix it for me. He was so kind and patient in explaining how to avoid the problem in the future. Love these people !

Chaney installed 14 windows in our home, including 5 that were oversized. We live on a busy street…read moreand wanted windows that provided some noise reduction and better insulation. Jesse explained in detail how the recommended windows would meet our needs and answered our questions. The windows arrived within the 3 month time period that was promised. Chaney has their own installers, they do not contract out. Hannah did a fabulous job with the installation over a 3 day period. She has 10 years experience and several of her family members are in the same business. We are completely satisfied with the new windows, and noticed the sound and temperature difference right away. Chaney was not the cheapest option, but it was worth it to get quality windows installed by true professionals.

In August we ordered two doors - a front door with side panels and a set of French doors for our…read morebasement entrance. Total cost exceeded $15,000. *** We were told 8 to 12 weeks to installation.*** The minute our deposit was down on these doors, that was the end of all forms of actual customer service. The doors were finally installed in FEBRUARY! We were never contacted about the delays. Calls to our salesman and the office were ignored. Promises were repeatedly broken. The final piece of work was completed on March 12th. Almost 7 months. The doors are lovely but there is no force on Earth that would persuade me to do business with them ever again. You have been warned.

Doors were very expensive. Installers left grease and hand prints, scuffs on walls. Had to use…read moreMagic Eraser to clean. I had paint code to match existing trim. They insisted on using a paint sample for the door color, not the correct paint code, so the door color didn't match. Had to repaint the doors myself. I complained about the paint, including to the owner. Didn't get the decency of a response. Wouldn't recommend.

Explained my project and was told it was not big enough for them to even come out for an estimate…read more Money hungry company!

Home addition, two bedrooms two bathrooms and garage . Existing finished basement flooded twice…read moreduring construction and after construction was finished flooded again in heavy rain. Their proposed warranty work was unsatisfactory. Proposed work was caulking from the inside on a foundation crack which appeared after front porch was replaced . Also had water entering basement through around new waterline. Completely ghosted after refusing interior caulking. Next Step small claims court

We had a very poor experience with another company when researching windows and installation and…read morewere a bit cynical of contacting another business. However, the process of obtaining a quote was indeed as easy as Zen Windows website makes it out to be; check out their website and watch the videos. I completed their form with the number of windows, approximate size and the requirement that the windows must meet a minimum efficiency. A reply was quick and thorough and above all easily understood and answers to questions were immediate. Dennis provided all the information needed should a permit have been required. Once accepted, Kevin came out within a few days to take specific measurements needed for ordering the windows. Within just over a month, we received a call asking if the installation could take place within 48 hours as they had an opening. Ed, Jimmy and Daryl were the installation crew who arrived promptly and you could not ask for a more conscientious and professional team. They seemed to get along and worked well with each other. Care was taken to protect floors and carpet, the installation and operation of the windows was explained, and clean up was meticulous. I had planned to shampoo my carpets after they were finished and Daryl did such a good job of cleaning up the floors I did not have to vacuum first! We had 6 windows replaced and opted for the Endure EN600 series double hung, Energy Star Certified windows. These windows were installed on a warm day in rooms that get the afternoon sun and it was immediately apparent that the sun gain was much lower than the previous windows. The wind is gusting today and there are no drafts! The total cost was a bit above some of the other estimates but after our previous experiences as well as the ease of the ordering process, the personable and professional installers- much less the quality of the windows- it has been well worth it.

Dennis and Rhonda were quick and fully responsive to my questions and made the whole purchasing and…read morescheduling process very easy. Their seasoned installers were very professional, prompt, and respectful of our home. They worked hard to replace our entire two story home in one day before bad weather was supposed to hit the next day. We feel like we got a great product that will last for many decades which also has a great warranty. I would definitely recommend them to anyone wanting the best customer service and no pressure sales with a great buying experience.

I had a storm window sash glass that was broken due to a rock while cutting grass. I further…read moremangled the sash trying my own fix to no avail. Since the type of window has long been discontinued, I couldn't find anyone in the St. Louis area willing to fix it without a total window replacement. J & J not only offered to take a look but was able to reassemble the sash with a a new piece of glass! They saved me from a bind for sure! Everyone was very friendly and helpful and I couldn't be more thankful. We have a window project planned in the next 5 years and will definitely be keeping them in mind!

We purchased 2 doors from J&J Window Sales in 2017. The first door that was installed - Alliance…read moreSliding Patio Door. Issues: The seal was not applied properly and a lot of water leaked in the basement after we had a hard rain. J&J did assess the damage and paid for damages through their insurance. The lock on the handle also did not work but J&J did finally fix it. The second door we purchased - Therma Tru Fiber Classic Mahogany was for the front door. It was sold to us from J&J Windows with the intention that not much maintenance would be needed because it's fiberglass and not wood AND it had a 5-year warranty. This product has been ABSOLUTELY TERRIBLE and J&J has NOT stood behind the product they sell. We have had issues with this door and door frame less than 1 year after it was installed. We notified them as soon as we noticed the issues and at that time, paint was peeling around the door frame and the door was already starting to fade. No way should it have faded this quickly. They sent a painter out MANY times to try and fix the door frame and it still looks terrible and paint is still peeling. They SAID they re-stained the door for us but they NEVER did and after checking their records again they discovered they never did re-stain the door. The picture of the house is what the door looked like 1 month after it was installed, which was very nice. The other images are after 1-2 years after it was installed.... TERRIBLE!!! We spent thousands of dollars ($$$$) and now J&J Window Sales (or even Therma Tru) are not willing to fix the door frame or the door! Their final email/comment to us was that they were sending us a door stain kit so we could do it ourselves or have someone do it for us, and they made it sound like they were doing us a favor because the kit usually costs $140. SERIOUSLY??? Do you think this is good customer service??? I am embarrassed that our front door looks so awful. The least J&J Window could have done was send someone over to re-stain the door and at least do something to fix the frame. They just gave up! We have been extremely patient through this process over the years. They said the door must receive a lot of sun.... No kidding... It's a front door!!!! THIS IS HORRIBLE CUSTOMER SERVICE AND WE ARE VERY DISAPPOINTED CUSTOMERS! We will NEVER refer ANYONE to this company!

Reasonable prices and quality craftsmanship. Restored an antique rocker for me and did a good job.read more

From the owner: We will beat any competition price guaranteed and if your not satisfied Money back!read more

We had 4 sliding glass doors, one single exterior door, one fixed pain side window, a kitchen…read morewindow and a double french door unit installed. The workmanship, timeliness, respect for my property and ease to work with (effortless) and attention to detail were top notch. I do not hesitate to recommend Nathan's company to family and friends. You will not be disappointed. Thanks Nathan.

From the owner: We are a family owned business with 20 years experience in the window business. We sell quality…read morewindows at a affordable price.