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Capitol Improvements

5.0 (1 review)
Closed • 5:00 am - 11:30 pm

Services - Capitol Improvements

Window installation

Window replacement

Gutter addition

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Gutter installation

Gutter repair

Gutter replacement

Roof cleaning

New roof installation

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Roof replacement

Reroofing

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New window installation

Window replacement services

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Windows on Washington

Windows on Washington

(231 reviews)

I needed new windows and new sliding glass doors. The previous owners of our appartment had put in…read morethe cheapest possible units with the cheapest possible labor. With regards to the heating of our home, the windows were no better than screens. I reached out, looking for windows and installers. I had a few people come in and estimate the job. None of them impressed me until Greg from Windows on Washington came over. He walked me through several options and explained how the windows they used were manufactured and why. Windows on Washington got the job. My windows and my doors were being manufactured. So they sent out a wonderful gentleman to get the final accurate measurements. Great guy. After that, communication was wonderful as were were assessed of the stage we were in. This included when we got the email and calls explaining that, since we were on a higher floor, they needed to bring in some equipment to lift the new doors up to our balcony. No surprises. Installation day was amazing as Joon and his team came in, got everything into place, and cleaned up the areas to better than when they got here. Joon then went over the features on our windows and even explained how we get to and clean the outsides of the glass. Wonderful man and amazing team. Since then, we have gotten copies of our warranty and the guarantees. And the company has reached out twice to ask if we have any questions and to ensure that we are happy with our windows. We are. We are very happy with our windows. Almost as happy as we are with the people who got them into our home.

The installation team was every bit as fantastic as Eric said they would be. Which was largely the…read morereason we chose WoW! After all, it is our home and we want to make certain we get the best products, expert craftsmanship, and clean installation that is issue free. The crew was on time, professional, communicated process well and worked hard to do a good job the correct way. The crew lead was Jeff and he was super professional and came across as very honest. They cleaned throughout the entire process, installed all products that fit perfectly with expert skills. They did a thorough job at insulation replacement windows and the finish caulk job was immaculate. The look from the curb is stunning and I can notice how well the windows are performing as it seems the air is running less in just the week we had them. We love our new Okna 800 windows and Eric and team killed it!

Zen Windows Washington DC

Zen Windows Washington DC

(86 reviews)

I had a really great experience with ZEN Windows from start to finish. What I liked right away was…read morehow casual and easy everything felt, no pushy sales tactics, just straightforward and friendly communication. They were super responsive anytime I reached out with questions. Emails and calls were returned quickly, which made the whole process feel smooth and stress-free. They also got someone out pretty fast to measure the windows, so things kept moving without delays. I ordered 10 windows for my townhouse at the end of February, and everything stayed on track. The windows came in April, and installation was set up for the very next week, exactly how they said it would go. The install team (two guys, led by the amazing Mark) was awesome, very professional, worked efficiently, and took the time to protect my floors and furniture. They cleaned up as they went, which I definitely appreciated. Scott, the owner, stayed in touch throughout the day of installation and honestly throughout the whole process. I had a couple of window and sash issues but Scott was amazing and the kind of communication and follow-through really stood out. Overall, I couldn't be happier with the experience. They did exactly what they said they would do, and the customer service was top-notch. I'd definitely recommend ZEN Windows to anyone. It really was a calm, "ZEN-like" experience. Haha!!

What a great and easy experience it was getting new windows from the Zen Windows folks in…read moreGaithersburg ! The team has been together forever and it showed. From the original meeting to the completion of project was seamless and flawless. After dealing with several different companies they're pricing quality of product and laid back professional approach was a appreciated. I would highly recommend Zen Windows.

Thompson Creek Window - new front entry door and windows

Thompson Creek Window

(559 reviews)

To begin, this company provides a very good window. They represent themselves as providing…read more Superior Selection, Expert Installation, No-Hassle Warranty. Safety and Accessibility, Beautiful By Design, One Day Installation, Easy Maintenance. and Long-Last Materials. Having just had 13 windows installed, I have no reason to refute any of these claims. From my experience their primary focus is on making the sale and not ensuring a high quality customer experience. Pricing transparency? Clear as mud. They gladly apply discounts to reduce the "actual cost" that are pulled out of an I pad. Smoke and mirrors. Even greater savings are available if you "just sign today --- but no pressure". Expect to learn everything about the construction of the window and their "design, build, install" model. Do NOT expect them to share any details about the installation process or provide firm timeframes. How so? We ordered custom windows, and they explained those take longer. Makes sense. The we received an installation date longer than we were told to expect. OK. Friday morning before the installation the following Monday we received a text message confirming our installation would be the following Tuesday, as we had been told weeks earlier. It asked us to confirm, which we did. At 4:58 pm that same Friday I receive a voice mail message : "Because your windows are painted I have been advised by our factory there will be a delay. I am tentatively scheduling a new date of ....17 days later." The windows were always to be painted, and the installation date was already moved back 2 weeks as a result. After our order we learned we'd also need to remove all the blinds beforehand. Makes sense - and we were glad we asked. "But there is no need to remove the brackets to the blinds" was the guidance provided. Whew. On the day of installation, the installers removed all the brackets. Because they had to. Installation day: we did not think to ask how much interior access to our home would be needed. All windows needed to be brought through our house (installers asked for access through the longest route possible, oddly), all old windows removed using that same route. Shabby cloth runners were placed on our floors, which at least somewhat reduced the grime from work boots traveling across our floors all day. Alas, at the end of the day after the drop cloths were removed, an installer had to go back through our home with no floor coverings left to retrieve tools and a drop cloth that were left behind upstairs. Enter new grime in places that had dodged that day's grime. Additionally, about a quarter of our window sills were full of grime left over from the installation. Brackets could not be reinstalled (by us) for 24 hours so the caulk could dry. While none of these many annoyances represent deal breakers, Thompson Creek's "expert technicians" who meet with you to pitch their products make an effort to help prospective customers understand "what to expect". Finally --- after providing a check for my deposit there was likely something in the sales agreement indicating the balance would be electronically swept from that same bank account upon completion. What makes me think that? Because upon completion I asked the installer if I could provide him my credit card information to pay the balance owed. "No the office will be in contact with you." Expecting a call, I instead received an alert from my bank app within the hour that the balance owed was being taken from my checking account --- the same one I paid the deposit from. A nice last surprise from this company. This company provides a good product. Their competitors are few, which they well know. That may explain why their "after the sale" process consistently demonstrated they prioritize making the sale over the total experience of their customers.

Despite the setbacks, the installers were professional and the finished door looks very nice. Once…read morethe installation was finally completed correctly, the quality of the product itself met my expectations. However, the overall process was far more stressful than it should have been. My original appointment was scheduled back in February, but no one showed up, and when I called, I was told the appointment was not even in the system so they had to rescehdule. Then on installation day, the crew arrived with the wrong size and wrong color door, which delayed the installation and caused me to miss work. Communication throughout the process was slow, and I had to repeatedly call and request escalation before receiving consistent updates. Ironically, communication became much quicker when it came time to collect the final payment. While compensation was eventually offered, it felt like the minimum possible amount considering the inconvenience and lost time involved. In the end, the final product turned out well, but the scheduling, communication, and ordering issues made the experience frustrating overall.

Window Nation Northern Virginia

Window Nation Northern Virginia

(262 reviews)

I purchased 11 windows (my whole house) from Window Nation in June 2025. While the salesman seemed…read moreknowledgeable, there are some issues of which I am not satisfied and based on these, I would not recommend Window Nation. First, the energy efficiency of the product is lacking. The salesman, using a sample window and a little device, noted the temperature on one side of the window using the device and then noted the temperature on the other side of the window without the device. A marked difference. However, this winter during a cold spell, my home was quite cold. I had to increase the heating system thermostat temperature to make the home warmer. I put my hand on the inside of several of the windows and surprise, the cold was coming through the window. I had to purchase new thermal drapes to put on windows to try and keep cold out. My utility bills were through the roof this winter so that little gadget was useless. Secondly, when closing an open window, the upper pane slides down with the lower pane and you have to reach up the outside of the windows to push the upper section back into place to be able to lock the window. Lastly, I opted for the 18 month promotion. The service company Window Nation uses is named "Service Finance Company, LLC". THEY ARE A WASTE!!!!!!!! All of their Customer Service Representatives are offshore and when you call, they have no clue how to solve your billing issue. I pay my bills online and since purchasing the windows, I have only had ONE (1) month where I did not have a problem making the payment. All in all, I would suggest that you look elsewhere for windows and not window nation. Oh, and one more item, I received a card in the mail noting a promotion, but 2 get 2 free. Well, it was bogus as the salesman noted that this promotion does not include installation.

They made me see all their information and house information after all that they then hung up…read more.. the worst customer service.

Capitol Improvements - roofing - Updated May 2026

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