Engineered with the Installer in mind

The Worlds Only
Interlocking
Stackable
Horseshoe Shim.

Stackable

Simplify your window installations with our Glazelock stackable shims. Made of recycled high-impact polystyrene, these individual shims snap off to give you the exact size needed for the job.

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This unique and patented horseshoe shim design offers advantages over traditional smooth horseshoe shims. Reduce material and labor costs while providing a secure and stable solution to your shimming needs.

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Non-Interlocking

Traditional shims designed to “cradle” and distribute pressure between fasteners and your installation.

Available in economy and bulk packages.

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New Product

Shim Mate

Glazelock’s Shim Mate Holder is your door and window shimming solution. Shim Mate Holder provides better installation and easier plumbing and adjusting of doors and windows because they hold shims in place.

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Engineered with the Installer in mind.

Glazelock Shims Inc. has been a manufacturer of structural plastic shims since 1997.
We pride ourselves with quality products, quick turn around time, and great customer service.

Invented by a window installer.
Reduces material and labor costs.
Secure and Stable.
Simplifies installation in a multitude of applications.
Proudly made in the USA.
Multiple sizes and variations available.

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What our customers say.

We have been using Glazelock’s Interlocking shims for over 5 years now. They simply snap together to get our desired thickness. No more taping or glue shims together, saving us time and money.

– Roger, Starline Architectural Windows Ltd.
We at Softer Lite Window Company use the Wedgelock Shim and are pleased with this great product. My installers find it more efficient and cost-effective, and an easier and faster way to get the job done right-the first time. We recommend the Wedgelock Shim and all of the Glazelock products.

-Mark Kane, President, Softer Lite Window Company
Glazelock is our go to company for all our shim needs. We’ve never had any problems with the product received. The customer service provided goes beyond expectations-we can see our product ordered as soon as the next business day.

-Lindsey Holmes, B&D Contractors, Inc.
I like using Glazeock’s Stackable Shims because they have the ability to stack well and make the right size shims for the job.

-Jared, EGR Inc.

Meet the Team

Glazelock Shims Inc. has been a manufacturer of structural plastic shims since 1997.
We pride ourselves with quality products, quick turn around time, and great customer service.