We have had Zen do window jobs for us. The first two jobs were straightforward with a basic order…read more The third job was a custom window and the service was just wasn't great. The install hurried and sloppy. Overall they do good work but could be better. Be aware of up charges and do your research prior to calling.

I thought I'd posted this review previously with two stars because I thought the installers did a…read moregood job then I found the wet wood and looked under the eaves. The windows are hard to open and close. Because they remove for cleaning they practically jiggle out just by opening. The size of the frame cuts down the windows nearly by half with the smaller windows in the kitchen. Then I was told I couldn't get tax credit on energy efficiency because I would have gotten the more expensive windows. I was basically only offered two styles and choose the most expensive. I expected energy efficiency

303 windows installed a sliding glass door where we previously had a door and window. Chuy and Jake…read moreand their team did a fantastic job, all at a reasonable price. Would definitely recommend them.

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.

Rex is super cool, good dude. Window look great. No hiccups, just smooth sailing. Thanks!read more

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.

The whole window world experience was great. From the initial sales and estimate to the install was…read morestress free and smooth. Steve Bell our salesman was not pushy, the company gave us accurate lead time, and the installation crew lead by Daniel O. was on time,very professional, friendly, and worked very hard.

had Mike Cook come over and look at some side bay windows to get replaced. I told him they were not…read moreclosing and don't think they could be fixed. Mike took a look at them and was able to fix them without being replaced. It took him a little while to figure it out but him being the stand up guy and obviously very honest man he is he was able to do it and did not even wanna charge me but I couldn't resist to give him something. If I ever need windows replaced I'd definitely choose this company in a heart beat. Very honest, professional and courteous which is hard to find in companies these days.

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 ~

I requested a formal contract from Gravina's for a full-frame window and sliding door replacement…read moreproject. The sales rep, Mark, provided a detailed itemized quote and answered initial spec questions promptly. When I mentioned that another vendor's quote was significantly lower and asked for a formal contract to compare, the rep declined to finalize the contract or calculate exact measurements unless I first shared the competing company's proposal. I explained that I don't share competitor quotes with any vendor, as a matter of fairness, and asked again for Gravina's own formal contract with their best price. I followed up twice over the following week, including a specific deadline for the contract, and received no contract or further response from the rep. I then forwarded the full email exchange directly to the sales director so the company could review it and respond if they chose to. That email also went unanswered. The initial consultation and product information were professional. However, despite being a ready buyer and giving the company multiple opportunities to follow through, I was unable to get a final contract at any level, and ultimately went with another company that provided a complete, firm proposal without conditions.

These guys are great. Prompt. Fair. Professional. Not pushy…read more Will definitely be using them again.

Joe was amazing. He came to our house promptly and was not pushy to sell me things. He listened to…read morewhat I wanted and came through quickly with an estimate. When the first window I wanted was not available with the specs I needed, Joe came out again to re-measure for an alternative window. In the end, we decided to wait on the windows, but not because of Joe. He was fantastic. Highly recommend.

Replacing windows is like buying a new car. There are so many options and hustles out there. I…read morecan tell you Anderson is like 2x this place. Go with recommendations. My contractor referred me here. Solid job all around. 1 month from order to install day. I would call first for a consultation. No hard sell for fiberglass vs vinyl which is hot now. Go to showroom if you have to. It's very small and basic but that's ok. Measure your windows first for a quote.

Ok, lets say, window installing is a pain, I have done it... Danny and his crew did way beyond what…read moreI expected for the install.. Cleanup was great, no mess left behind, used drop cloths everywhere to keep it to a minimum, and he knew where to square up the windows when installing them, where to put the proper screws in to secure them and used the best caulk I have ever seen to make them look great... Pricing was right in line with Greg working in the office, helping me all the way with what type of glass choice I needed for my south side of the house. Heck, I think we emailed 6 to 8 times and had one visit to the showroom to make sure everything was right. I had 3 other quotes, well, tried, and 2 did not even get back to me. In todays world, service starts first, then pricing.. I will recommend them to anyone looking for a great job from start to finish...

One hundred percent I would recommend Ace High Glass…read more Installers were respectful and thorough. Jake the owner is a good man

Fantastic experience with this efficient, reasonable and responsive business. We had 2 windows…read morethat were damaged and they arrived as promised, quickly had a quote same day, which I approved. 2 weeks later, it was installed! Done!