Exterior Keystones for Windows and Doors

Exterior Keystones
  • Free Shipping direct to your jobsite or home
  • Will not Rot, Warp or Infest like inferior wood products
  • Add sophistication to window trim with imitation pre-cast window keystones
  • Can be installed during construction, or after as a renovation due to light weight
  • Painted any color of your choosing after installation

Keystones add a unique flare and style to windows and doors. Our lightweight polyurethane keystones can be installed either during new construction or after a renovation, and will not rot, warp, or become infested. The size of a keystone will be determined by the trim you're using it with, keystones should generally be 1-2 inches taller than the trim to provide enough visual impact. The shape or design of the keystone is largely a personal preference, and should generally fit with the style and theme of the home.

Keystones have been used in construction projects for thousands of years, and while they're no longer required structurally, they provide a classic, timeless look to any project. They can be used on any building material including brick, stone, stucco, EIFS and even vinyl.

When selecting the placement of keystones, you want to first start with the most often seen doors and windows, and fill in the rest as budget and time permits. A few key places include the front door, garage doors, and large windows on the front of the home. Smaller or less ornate keystones can be used on dormers and less prominent or visible windows.

Keystones are designed to be embedded into exterior window trim!

exterior window trim
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Classic Keystonemore information

Classic Keystone

Made of styrofoam coated with a cementitious coating. Various sizes available. Keystones can be fit into the top center of any trim to make the...
Sale: $29.33(25% off)

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Although purely decorative, keystones are a a great way to accent your windows and doors. Keystones should be initially placed when installing the rest of the molding and window trim, however - a center can be carefully cut from existing moldings to provide a place for keystones.
Check out our guide for selecting the appropriate keystone size for your window trim.

Whether you're in California, Texas, New York, Florida, Ohio, Nevada or Connecticut - we ship right to your job site. If you're a builder, project manager, architect, designer or contractor looking for premium imitation-concrete products to compliment your stucco, brick or masonry project, send us an email and we'll be happy to help!

Decoramould is an exterior keystones supplier for home renovation, retrofits and alterations throughout the U.S.A. and Canada. Customers can buy exterior keystones online, and have their exterior keystones purchase shipped directly to them.

Our keystones look like high end concrete keystones, but weigh only a fraction as much - and often cost only a fraction as much as well. They can be installed during the initial construction of a home or building, or added on as decorative keystones after construction. Installation is as easy as adhering them to the wall surface, for more information see installation instructions.

We Ship Throughout the U.S.A and Canada!
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