Cornerstone Openings

Andrew Corlett

5 months ago

Great company to work with.

Javvad Syed

2 years ago

Sean and his team are excellent at what they do, and go above and beyond for their clients. They recently did a job at my in-laws’ house, and they not only did an incredible job on installing the doors, but also in prepping things for the additional work my in-laws plan on doing. My in laws were also having some pre-existing electrical issues while the work was being done, and the owner sent over an electrician to get the issue resolved. The crew showed up on time everyday and they worked in synchronicity. Everyone knew what needed to be done, who was doing what, and when it was to be done. I have never seen a crew work so efficiently and effectively. The owner came and did a walk through and showed my in-laws and myself on how to use the doors, and what common mistakes to be mindful of. You can tell Cornerstone has been in the industry a long time, and that it was built with the focus on customer experience. We were impressed with the quality of work and overall experience. We highly recommend them!

Heather Hanson

3 years ago

We cannot recommend Cornerstone Openings highly enough. They have the best prices around but far beyond that is their customer service. Will was very helpful and came out to meet with us and make a recommendation since we were torn between bi-fold and a slider. Will gave us great advice and didn’t try to up-sell at all. Where they really came through was on the installation. Our installer thought the framing was off and that it wouldn’t fit, and our general contractor basically washed his hands of it, so we were beyond worried that this huge investment was not going to work. Sean, the owner, responded to us right away, came out the next day to take a look, and promised that he would personally take care of it. The next day, the door was installed, and looks beautiful. This was a huge relief of course because of the money involved, but it also was so refreshing to have Sean take ownership and make sure it got taken care of, when it wasn’t even a Cornerstone problem. We are beyond happy that we went with Sean, Will, and everyone on their team.

Gregory Lynch

4 years ago

Cornerstone Openings are fantastic artisans and their customer service is absolutely the very best in the industry. Mistakenly I did not buy my La Cantina folding doors from Cornerstone and deeply regret my decision. After another company incorrectly installed my doors and could not fix them I called Cornerstone who came out the next day with a professional adjuster and not my doors function perfectly, then followed up the next day. I will use Cornerstone on all future projects, they are far the most knowledgible in the industry.

Joey

4 years ago

This is where you want to go for BIG DOORS in South OC!! Quality work, fair pricing.

Mike Y

4 years ago

We had a couple of bi-fold doors installed by Cornerstone to replace old and failing sliders. It is an expensive upgrade project but the Cornerstone team took some of the sting of expense away as their team was very professional and one of the best contractors that we’ve worked with over the last 30 years. The team responded timely for an estimate, acted quickly to begin the project then worked swift and were very clean to demo and then install once the doors were ready from LaCantina (took about a week for demo and install). I’d highly recommend Cornerstone

Solomon Poyourow

5 years ago

Great company with outstanding customer service. These guys really understand how to take care of their customers. Sam goes above and beyond. If I need something and they sell it, I’m buying it from them.

Catherine Meyer

5 years ago

We had a 10ft. x 12ft. tri-fold opening installed by Cornerstone well over a year ago. Recently had a minor issue with the outside stucco above the opening (NOT the stacking/sliding doors) and Cornerstone was on it immediately and resolved 100%. Sean, Sam and crew are the most professional team you could ask for and their customer service is the absolute BEST!! If you are looking for a quality product, professionalism AND great customer service, don’t look any further….Call Cornerstone!