Welcome to Knock On Glass, your glasswork professionals.

At Knock On Glass, our number one concern is customer satisfaction – both residential and commercial. 

We are committed to business integrity and honesty through hard work, organization, courtesy, and communication.  We believe that word-of-mouth advertising is the most effective kind.  We realize, however, that it only comes with customer satisfaction, and so our entire team works hard to exceed all customer expectations by providing unparalleled service and top-quality products. 

We believe this can only be accomplished by providing superior service, quality products, and competitive pricing – all in a timely manner to meet customer needs.  

Fast Shipping

Money Back Guarantee

Factory Warranty

Secured SSL

Our Portfolio

Please view some of our latest jobs. We update our portfolio daily; make sure to visit to view the most recent jobs. Thank you.

Aluminum Storefronts & Entrances

Knock On Glass - Aluminum Storefronts & Entrances

Shower Doors

Knock On Glass - Shower Doors
Manufacturing and Installation


Knock On Glass - Mirrors
Manufacturing and Installation

Frameless Storefronts

Knock On Glass - Frameless Storefronts

Glass Railings

Knock On Glass - Glass Railings
Manufacturing and Installation

Glass Partitions

Knock On Glass - Glass Partitions
Manufacturing and Installation

Custom Glass

Knock On Glass - Custom Glass
Manufacturing and Installation

Table Tops

Knock On Glass - Table Tops
Manufacturing and Installation


Years In Business


Completed Projects




Qualified Technicians

An inspired approach to quality residential and commercial projects

Knock On Glass offers a wide array of custom glass/mirror products and services in New York City. Our photographic portfolio includes numerous successful projects in New York City and beyond. Over the years, Knock On Glass became a prominent fabricator and installer of shower doors and enclosures, aluminum and frameless storefronts, glass railings, wall-to-wall mirrors, glass partitions, and many more custom glass projects. 

We pride ourselves in efficiency and the ability to perform smaller jobs such as glass table tops and shelves. Our testimonials page is reserved for countless New York City customers who have switched to Knock On Glass as their premier custom glass and mirror supplier. Whether it’s commercial conference rooms or residential home décor – we provide quality services at reasonable prices in New York City and all surrounding areas.


Serving Greater NYC Area and beyond!

10+ Years of Experience

ISO 9001 Certification

24/7 availability

Call any day, any time

No Obligation Quote

Work with detailed reports


Browse Our Shop Inventory.


Sliding Windows & Hardware

Bathroom & Shower

Glass Panels & Hardware

Glass Railings


What our customers are saying about us

At Knock On Glass, customer satisfaction is our ultimate goal. See what Knock On Glass clients have to say about a variety of services that we provided for their projects.

Call us and get it done

When you hire us or purchase from our website, you know you’re getting only the best quality products and highly qualified professionals who have the expertise and experience to make sure your project is done properly, on time, and within your budget.

Let's Talk About Your Project

After we get some information from you, we’ll set up a time to discuss your project in further detail.