
Cornerstone Windows & Doors
About us
Cornerstone Windows & Patio Doors is a full service replacement window company in business since 1999. Cornerstone installs quality window products from Simonton and Milgard. Cornerstone's sales approach is low key and realizes an informed consumer makes the best decisions for his or her home. Most installations take only one day and normally do not involve dry wall or stucco damage. All employees are fully bonded and insured. Cornerstone does not employ any subcontractors. Cornerstone takes meticulous pre-sight measurements to insure all installations fit correctly and some products come with a glass and screen breakage warranty. Cornerstone is a proud supporter of a number of local high and grade school teams and activities in the South Bay area of Los Angeles.
Business highlights
Services we offer
French Doors & Entry Doors, Patio Doors, Replacement Windows
Amenities
Free Estimates
Yes
Number of Stars | Image of Distribution | Number of Ratings |
---|---|---|
89% | ||
3% | ||
3% | ||
3% | ||
3% |
I am writing this review because I broke the handle on my sliding door today and went to their shop to inquire about a replacement. They immediately brought me the replacement handle and off I went. No hassles. Cornerstone was awesome when they did the install several years ago. Punctual. Professional. No surprises. My two experiences with Cornerstone have been great and I would recommend them to anyone looking to replace windows or doors.
"This job consisted of 85 windows and 30 patio doors and our records show the project was completed in 2001-not 2006 as noted by reviewer. There were a couple of small leaks which were addressed immediately, as is standard company policy with all jobs, big or small. The caulking used was not only the proper one, but came with a 25 -year manufacturer's warranty. Cutting back the flanges on retrofit windows is a common practice. It is usually done if the window or door is in a corner, or, if it has a trim around it which won't allow the frame to lay flat to the stucco. This does not void the warranty, in fact, there are score lines on the back of each flange specifically for that purpose. The manufacturer's representative visited the job site after completion and deemed the job to be up to their standards. [member name removed] was given a 10-year written guarantee and warranty from the manufacturer after the project was completed."
The sliding glass doors came with different pull handles; one was gold finish and the other was white. I asked that the white one be replaced with gold as well but was told that the sliding doors had been ordered that way and the handle could not be replaced (same manufacturer for both doors). Again my call(s) were mostly not returned after payment had been tendered and after a while I just got tired and forgot about it (which I think was what the company was hoping for).
I love the windows and sliding glass doors and they have made a big difference in our home. My suggestion to others seeking this type of work with this company is to stick with windows only and hire someone else for doors who specialize in this type of work. The issue here is not the quality of the product, but one of installation, service and follow-up.
I have several other homes to do but will go with Win/DOR this time.
"Cornerstone Windows takes great pride in servicing all completed projects whenever necessary. Customer service is why hundreds of past clients refer Cornerstone to friends. Whatever the issue, the service department responds quickly to resolve the problem. Cornerstone also assists customers in regards to manufacturer product warranties. In reviewing the file on this project, we discovered no requests for any service issues. In regards to the staining of the doors, Cornerstone is not a painting or staining company. This is clearly stated on the contract that this service is not included. However, the customer did purchase 3 stain kits from Cornerstone which are offered by the door manufacturer knowing that he would have to hire a third party to apply the stain to the doors. We would also like to note that the customers home is located on a hillside. It is not uncommon for movement to occur in hillside homes. This is most likely the reason for the door movement (especially after 8 years). In regards to the door handles, The customer received the handles on the contract. The handles are removable and easy to change out. We would have been happy to sell him additional hardware. Finally, we're a little confused as to why someone would post a negative review 8 years after the job was completed."
I had previously had other windows replaced using a retrofit design that I thought did not work well with the style of existing windows I had so I had Cornerstone completely rip out the old windows and install new ones. This required installing new moulding and stucco work. They installed all of the windows the first day of work; the sliding door, molding and initial stucco work the 2nd day and fnished up all of the windows on the 3rd day. The Cornerstone crew managed by Antonio were great. They arrived on time, cleaned up after themselves and did excellent quality work. I was very happy with the final product which looked much nicer than a previous job done by a general contractor. I would recommend them to others to use as well as use them again myself!
Being frugal, I called Marilyn the next day and thanked her but said I thought I needed to get a few more bids. She said she understood and thanked me for letting her assist me.
I got 3 more bids over about 9 days - and since Cornerstone was still the best for materials and price, called Marilyn back and set up installation. The windows were ready in 10 days.
Antonio and his crew (4 total) arrived at 10:00 and went straight to work. 6 hours of hard work later; we had all new windows with all new exterior trim and screens. They sealed every surface outside neatly, cleaned the windows and swept the floors inside and the patio outside. Antonio showed me how to operate all the windows (we got single and double panes) for cleaning, gave me all my paperwork and warranties and they were gone.
All-in-all a great experience.
"There was absolutely no intention to deceive Member during the sales process. This was the first week of the Angies' List promotion and Member was the first respondent to the discount. Minor confusion. No deception. Cornerstone is happy to service all Angies' List customers and factor in the 5% discount into the final bid. We only request potential customers identify themselves as Angies' List members so we can apply the special 5% discount."
Licensing
State Contractor License Requirements
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