I live in the Harvey Park neighborhood of West Denver where the original 1950s windows are aluminum…read moreframe crank style windows that are very drafty and transfer outside noise into my home. JDI gave me outstanding options for replacing my windows at a great price. I did not get their premium windows. I just went for their second tier basic windows. The entire process from the initial consultation, measuring and ordering windows custom made for my home and installation was roughly 6 weeks. The owner who conducted the initial consultation, scheduler, crew foreman, and crew members were fast, efficient, cleaned up the demolition of the original windows beautifully and were very friendly. Some were even born and raised in the same neighborhood as me. I can't believe how nice these windows are, how they have improved the beauty, air tightness of my home for drafts, temperature changes and for outside ambient noise reduction. Their ease of use is outstanding. I can't say enough superlatives about JDI. I would give them 10 stars if I could. THANK YOU!!!!!

Extreme disappointment regarding the quality and installation of the 18 Simonton windows I…read morepurchased from JDI. The overall product quality is unsatisfactory, and the installation was subpar. I continue to experience drafts and excessive noise through all the windows. The amount of noise I receive from planes (I live nowhere near an airport) and cars is crazy; it was never like this with my old builder grade windows. Furthermore, the caulking is very sloppy. The owner said he was ok with the work and threatened to place a lien on my property the day after the windows were installed if I didn't pay, even though I was not satisfied. Following the owner's suggestion, I completed a Home Energy Audit. I have attached a few photos from that audit which clearly demonstrate significant temperature differences. I have also attached videos demonstrating the air leakage using a fog machine.(I can't attach all the pictures and videos I have and would be happy to share) After I called the troubleshooter radio show, the owner sent a crew to insulate three of the windows that I felt were the worst (which helped a little). I was then asked to pay for the insulation of the remaining windows. It is unclear why new windows would be installed without proper spray foam insulation in the first place. Additionally, two of the windows still do not close or lock correctly, even after the sashes were replaced twice. Given my significant investment, this has been a regrettable experience.

We had a fantastic experience with The Window Doctor! We just moved into a new home where the…read moresliding glass door had a dog door which we didn't want. We had the old glass and they were able to schedule us and replace it quickly. We were considering getting a whole new door which would have cost $4,000, but we paid a fraction of that and it was SO worth it. Highly recommend using them!

Window Doctor just replaced 11 of our windows. We could not be happier with their professionalism…read morefrom start to finish. Derek came to give us a quote. He was very friendly and did an excellent job getting the project started. Joe and his crew came for installation. They were so courteous as well as wonderfully considerate of our dog and cats being careful not to let them out when coming in and out. They did a wonderful job the windows look and operate per and we couldnt be happier. Rare these days when something like this actually goes as well as it possibly could have. And to top it off their pricing was more fair than anyone we got quotes from. I would highly recommend them!

I was very pleased with the process and the ease of getting communication and pricing. I will…read moreupdate review after my consultation.

We hired Five Seasons last year to replace most of our windows for our home. Some of our windows…read morewere fairly large, and we also had two sliding glass doors replaced. So, this was a big project and we were very nervous as it was our first time doing this. From the start, we were impressed by the sales process. They went over our preferences and needs multiple times, made many iterations, and finally, we settled on the windows to replace, the style, the amount of sun filtering, etc. We chose Marvin windows as the window manufacturer, and Five Seasons then handled the installation. Now that it's been a year, we can say that Five Seasons supports their work really well. We had some problems with the hardware side of some of our Marvin windows and doors. It wasn't anything major, but things that should have been working properly. Dylan and Makayla provided exceptional support and actually rebuilt our sliding glass door locks for us, and since they did their work, the door locks have been working perfectly. The window installers, under Mike, did a great job installing windows that were large and in difficult locations. We have now had a year to see how they have held up to wind, rain, and cold weather and they are doing great. We are glad we went with Five Seasons. They were reasonably priced, installed the windows when scheduled, and have been providing excellent support.

After having experiencing contractors in the past that had left us feeling frustrated, disappointed…read moreand taken advantage of... It has been a breath of fresh air to work with Gravina's Window Center of Littleton. We had tried going the route of "finding a great deal" in the past, only to discover cheap is expensive in the long run, and our "deals" had left us with poor quality products and even worse quality workmanship. We decided this time around we would research and interview for all of the projects we were about to begin - this time it would be about finding the best value for our money, professionalism, quality and workmanship. Our first meeting with Gravina's was to look into replacing a few basement windows. After meeting with Jim Gravina, Mike Gravina and Justin Shyong - loving their energy, knowledge and ideas - we decided to have them replace the windows in the basement and replace our back patio doors. I can't begin to express how excited we were to see the finished project - the back door had become a favorite focal point of our home! Once we had actually seen, and experienced the difference with the windows, door and workmanship from Gravina's, it was a "no-brainer" to have them handle "phase two"... siding our garage and replacing the garage windows. Again, everything was awesome! Knowing that our James Hardy siding was done according to all of the proper guidelines of the product was important to us. Of course, with everything going better than we could have expected, I can honestly say, we were excited to hire Gravina's again for "phase three"... replacing the windows and front entry door on our main level (the remainder of the house), they continued to exceed our expectations and we are absolutely ecstatic about everything! John Gravina and his crew did an incredible job with our window & door installation, as well as Wynette & Samantha who had come back to do perfect staining of the interior windows, door and casings to match the hardwood floors in our home. It seems a little strange to say I was excited to work with a contractor - because I think many of us have experienced that nightmare of having someone in your home and just praying for the day they will leave - but the peace of mind knowing that things are going to be completed right, all of the proper follow thru will be done, having qualified and respectful people working in your home, knowing that you have a company you can trust, and knowing you will have beautiful windows, doors and siding to enjoy for years to come, is something to be excited about! Upon writing this review, I have reached out to Gravina's to let them know if they have a client that would like to see the work they have performed at our home, they are welcome to schedule a time with me to bring them by (this is something that we have only offered to do with Gravina's and Luxescapes, the landscape/hardscape company we worked with on our backyard that was also incredible). Because I don't want to post my personal contact information over the internet, if you wish to call me regarding our experience with Gravina's, you are welcome to get my number from Gravina's. If you are looking for windows, doors or siding, I would highly recommend contacting Jim, Mike or Justin to come by... you will not be disappointed! We hope you will find this information helpful in your search for a qualified contractor for your project! ~ Kevin & Jeri-Lynn ~

If I could give zero stars, I would. Our windows were ordered last Fall (September) and they still…read morehaven't been installed. My husband has called several times to find out why. He usually has to leave a message, and no one returns our call. We were told that our windows would be installed in December. The last time my husband spoke to anyone, he was told late April/early May. It is now May 10th. It's been 9 months. No one has ever called us to inform us why it is taking so long. I assume the ball was dropped somewhere in the process. I want to cancel the order and forget it. I chose this company based on a personal recommendation. I thought we would get better customer service over the corporate options. Nope; it has been THE WORST CUSTOMER SERVICE we have EVER received. DO NOT hire this company. 9 months and counting.

I can't say enough good things about this company! I was a little nervous due to lack of reviews…read morebut I couldn't have been more wrong. I got quotes from ten well known, well reviewed window companies in the Littleton area and Thibault was by far the most responsive, no-nonsense and respectful of my time professional out there. As a female homeowner, I really appreciate not having to sit through a condescending two hour high pressure sales pitch. I know what I want, please just give me a fair price. Thibault did just that, while being extremely knowledgeable, and the pricing was fantastic as well. I am affiliated in no way with this company and truly blown away by their customer service. Highly recommend!

I love KS!! Great prices and service. I've never had a bad experience. If you can't find something…read morethen they find it for you.

We were looking to replace our 28-year-old, builder-grade siding that was showing signs of water…read moreretention. After getting four quotes, I came to realize that each company pretty much has one type of siding they recommend and install. For one company we interviewed it was LP (engineered wood), for two companies it was Hardie (fiber cement), and for the last company, Superior Industries, it was a material we hadn't heard of before: Gentek ALIGN Composite Cladding (aka Alside ASCEND Composite Cladding). I was initially skeptical because I hadn't come across it in my research. How good could it be? Turns out, amazing. Really glad I called Mike to come take a look, as otherwise we would have ended up spending a lot more to get a not-quite-as-good product. Superior Industries replaced all of our siding, soffits, and facia, and aluminum-wrapped all new trim boards for us. They did precise, high-quality work and it really shows. Communication was good throughout and the guys who did the work were friendly and competent. Mike only has a couple teams, so these guys have been with him for many years and really know their stuff. They listened to everything I had to say, they consulted me when there were any decisions to be made, and they answered all my questions. Everything looks great and we are very pleased.

Inferior Product Installed…read more I needed new windows for a remodel I am doing in my daughter's condo. I contacted Superior Industries for one of three quotes I received. Mike came to respresent Superior. Mike and I discussed in detail about the color of the windows. I probably told Mike at least a dozen times "I need brown windows," "The windows must be brown." Not once did Mike speak up to tell me the windows he had in mind would be white inside. I fully expected the windows to be brown inside and out. Mike emailed me a work order where he added "white inside" to the description of the windows. I didn't notice this detail in the work order, but at the same time, I did not approve or sign-off on this work order. I approved the install solely on the promise of brown windows at a quoted price of $11,262. What business person would believe that simply sending out a work order, with no sign-off by the customer, indicates acceptance by the customer? The windows Superior installed are much cheaper windows than all-brown windows would have been. I accepted their quote believing I would get all brown windows. Quotes from the other vendors indicate brown and white windows sell for three to four thousand dollars less than all brown windows. I overpaid by three to four thousand dollars! I entered into agreement with Superior in good faith. I did not get respect or good faith in return. Instead, I got an inferior product where a much better product was promised. I will never do business with this company again. Update to Mike's response: What contract? A contract is a document where both parties sign-off agreeing to the terms of the contract. My signature does not appear on any such document. The email Mike references approves only the quote based on a promise of seven brown windows. I never approved the work order via email. I challenge Mike to post here any proof that I signed-off or otherwise approved the terms of his "work order."

The quality of the windows has been great so far. The install team, Dan & Hannah were great.read more

The process was easy from ordering to measuring to installation. They did a great job…read morecommunicating. They did a great job with the install, as well. Nice guys, worked pretty quick, and it looked good when they were done.

This is a terrific company! When I needed work looked at for my windows, a number of other…read morecompanies wanted to sell me new windows without even looking at mine. The repairperson came to my home and fixed my window in 5min. Unreal. I would recommend them to anyone and will bring future projects to them.

I can't recommend Window Rangers enough. They were great with communication, and very professional…read more They came and cleaned my windows spotlessly and replaced some cracked glass. I had hired them to also clean my gutters, but they were very honest and let me know that they did not need cleaning. I will definitely be using them in the future!

We have used paramount a few different times and couldn't be happier. From the sales person to the…read moreinstaller, everything was top notch!

Siding and some trim. The siding we chose was fiberglass due to durability and strength. A small…read morecrew did excellent work and were efficient. The only issue was with salesman promises about abilities of installing of lighting fixtures - he told us they could be made to hang flat against the siding, which turnedout was not true. The biggest problem was with attachment of the light fixtures. I feel we did get good value for our money.

Don't hesitate, call now!  Over the past seven years we replaced all of our windows.  We did this…read morein thirds:  The first and second time we went through Discount Windows and Siding.  This is when they were discount windows.  Since then their prices tripled which prompted us to shop around, obtaining estimates from four more window companies.  Enter Jay from 303 Windows.  What a breath of fresh air!  From the first call Jay was prompt, professional, courteous, VERY KNOWLEDGEABLE, reasonable, observant, and keen on details (he was the only window man in seven years who pointed out that the grids in our windows did not match the others).  He's a straight shooter who won't steer you in the wrong direction.  Any follow-up questions or concerns are immediately addressed and resolved.  Others may have had lower bids, but Jay's integrity and confidence won the day.    From start to finish, the measuring, estimating, ordering and installation went without one hiccup.  I'd like to talk more about the people (very good communicators and listeners) before I describe the windows.  Rick came out to do the measuring.  He was fast and efficient.  Five guys showed up on installation day:  John, the front man who had the sweetest disposition, explained what they were going to do and how they would do it.  Dan, the most energetic and spry person I've met to date, elected to be the one to install the window over my jetted tub because he was the lightest of the men and wanted to place the least amount of pressure standing on it.  Let me clarify that most of the work was done from the outside on all windows.  Upon meeting Vincent he quipped, "Nice to meet you".  I can't tell you the last time a young man has said that to me.  Two other men showed up as I was leaving for work do I did not get their names.  These five professional, hardworking and very competent men installed 9 windows in 4 hours.  As with any project, touch-ups were needed.  Both John and Dan asked me for my touch-up paint so they could leave my walls as they found them.  I was totally impressed with their caulk lines by the way.   The windows:  We hesitated 2 weeks putting our blinds back up because the windows are so darn pretty to look at.  Functional?  Hell yes and way better than the Discount Windows we currently have and those we've seen from other companies.  303 Windows have more sophisticated features such as an aluminum bar running the length of the window to remove the screen (instead of cheap plastic tabs that break), clean lines, curved locks that your fingers can easily manipulate, and an overall design that makes the windows look elegant.  They are both lightweight and durable, open and close without throwing your back out, secure, and help reduce noise.  In addition, all parts can be replaced such as latches, locks and security features vs replacing the entire window.   Since starting this journey seven years ago, we've had a great deal of estimates and salesmen at our house including Andersen, Champion, Home Depot, Lowes, Southwest, Affordable, and Gravina's along with other companies and contractors we have long since forgotten.  Oh the stories we could tell!  Save yourself the time and frustration.  Call 303 Windows now!  I wish we would have seven years ago!

Jay handled replacement of all our old windows and new windows and doors for our renovation…read moreproject. The windows came when promised and installed by his expert team. Jay, is also very honest. He came to look at the installation and realized that one of our window was the wrong color. He immediately let us know and ordered a new one. I would highly recommend Jay and his team to do you window and door project.