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    NanaWall Systems

    3.4 (52 reviews)
    Closed 7:00 am - 5:00 pm

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    Mark H.

    Love the NanaWall folding window and door systems that we installed in 2018. These have made a huge difference in our living spaces that open up to our backyard and patio. They are functional, elegant and durable. They do require occasional fine tuning as with any high tech mechanical device, and the 10 year warranty is also great for peace of mind. We installed three of these systems and one had an issue that was quickly resolved recently. The key is to make sure your contractor measures correctly and advises whether you want an in-swing or Out-swing stack based on how you use your space and then also use a competent installer. They also have sliding or pocket systems now I believe.

    Nanawal faulty product & installation
    Robert D.

    Sitting in our house still under construction and it sounded like a small bomb went off. "Spontaneous breakage" Nanawall calls it & NOT COVERED UNDER WARRANTY. Read the fine print before you agree to spend tens of thousands of dollars with these folks! AND another couple thousand for faulty install. Bad product from a bad company! Low quality!

    Door Closed Finished
    Joel C.

    I am recent recipient of a NanaWall at my new house. Wow! The NanaWall is better in person than described to me. Pairing the insode and outside of the house couldn't look better. It screams Masculinity, Femininity, and everything in between. Many thanks to Mike Barto and his team at Prism Home Improvement for the A+ installation. If there were 6 stars that's what I'd be giving.

    Kitchen - Danville,Ca
    Rob R.

    We have worked with NanaWall Systems for almost a decade now. We install them for our clients in the Eastbay & greater BayArea almost monthly now. We have also used other manufacturers and we find the Nanawall is a better product line with less service issues than any of the others. Cal Coast Window & Door

    From outside Looking in
    Steve E.

    1000% Happy....Could not be more Happier with our decision to use NanaWall systems for our Glass wall doors for our beachfront home. The Doors are so air tight and in high winds we have absolutely no air or water leaks. We looked at other options but settled on NanaWall with recommendation from a previous Clint of theirs. Do yourself a favor and make sure to have them professionally installed by their recommended Contractor. We used Katzianer Construction from the Philadelphia area. Their installer was a true professional craftsman. While we did have a few issues along the way that I won't bore you with I will say that NanaWall and the installation company staff was courteous and timely in all of their responses and professional 100% in taking care of things and making sure we were happy. You will no be disappointed in your decision to buy from this company.

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    I requested a quote for a project about 12 days ago and no response yet. Horrible costumer service.

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    Ask the Community - NanaWall Systems

    Review Highlights - NanaWall Systems

    We recently installed multiple sets of the framed and frameless Nana walls.

    Mentioned in 10 reviews

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    Cal Coast Window & Door

    Cal Coast Window & Door

    (391 reviews)

    From start to finish my experience with Cal Coast getting retrofit windows was fantastic!…read more Sal was the first to come out to give the initial quote and product options, he was very personable and great to work with. Sal was able to help with good pricing to meet my budget needs. Gary then came next to do final measurements before ordering; this was pretty quick work and he was very thorough. Once the Windows were built and ready to be installed, the installation manager Lorna was very quick to schedule an installation date and accommodated my scheduling requests. On the installation day, Juanito and Mauricio arrived on time, worked very efficiently and professionally, and did exceptional installation work. I would highly recommend Cal Coast to anyone looking for new windows!

    I can't say enough good things about this company. From start to finish, everything was handled…read moreprofessionally and exactly as promised. Their pricing was fair and transparent--no surprises, no upselling, just honest numbers that made sense. What really stood out was their timeline. They showed up when they said they would, stayed on schedule, and completed the project right on time. That alone is rare these days. The installers were top-notch--respectful, clean, and clearly took pride in their work. They treated our property like it was their own, which made the whole experience stress-free. If you're looking for a company that delivers on price, timing, and professionalism, this is it. Highly recommend!

    Door Pros - Scratches, dings, unfinished

    Door Pros

    (551 reviews)

    We had "Door Pros (Justin/Josh)" replace our old garage door about 6yrs ago. Yesterday (Sun,…read more1/25/26) we had an uneven load issue resulting in the improper tension and the two end lift cables misaligning the door so I frantically called and requested service via their online tool. Josh got back to me within a half hour asking for photos and descriptions to aid in resolution which I provided. Amazingly Josh scheduled their technician Matt for an appointment the next morning (Monday)..! Well Matt was incredibly understanding and quickly assessed the series of tasks to release the door, adjust the spring/torsion and accommodate for the slightly uneven driveway to ensure an even bottom seal. Further, Matt re-aligned the tracks, bracing, inspected and lubricated the rollers. It's still boggling to me that Matt was able to accomplish this repair in less than an hour.! I wish I could give Matt and "Door Pros" 10 stars instead of just 5. I wholeheartedly recommend "Door Pros" to everyone who not only needs a better garage door but also the years of support, service and trust you gain with great products. Thank you so much Matt! - Phil R.

    NO CUSTOMER SERVICES!! Door pros installed our garage door two years ago and the panels started…read morepeeling off from the door frame and becoming loose. I contacted the company and finally got someone to pick up the phone, the person answered asked me to send photos of the door to an email address. I sent the photos and waited, nothing happened. No email acknowledgment and no phone calls. I called back and they said that the project management team would get back to me. But nothing happened again. The same process happened again and again and this is just a technique they use for the customers to give up. DO NOT USE THEM!

    NanaWall Systems - windowsinstallation - Updated May 2026

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