Exterior Keystones for Windows and Doors

  • 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
  • Take $100 Off Orders Over $1000 with Coupon BULK10
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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...
$39.10
Sale: $37.15(5% off) ... details required
Keystone 019more information

Keystone 019

Keystone 019 - 7" Height - Made from Polyurethane. This keystone is a more ornate keystone cast form polyurethane. It comes primed for the factory,...
$56.00
Sale: $53.20(5% off)
Keystone 019Bmore information

Keystone 019B

Keystone 019B - 10" Height - Made from Polyurethane
$135.50
Sale: $128.73(5% off)
Keystone 019Cmore information

Keystone 019C

Keystone 019C - 12" Height - Made from Polyurethane
$164.20
Sale: $155.99(5% off)
Keystone 020more information

Keystone 020

O' Canada. 10" Height - Made from Polyurethane
$167.00
Sale: $158.65(5% off)
Keystone 021more information

Keystone 021

11" Height x 10" Width x 7" Depth - Made from Polyurethane. Lion Head Keystones aren't just for castles.
$201.00
Sale: $190.95(5% off)
Keystone 022more information

Keystone 022

10" Height x 4" Depth - Made from Polyurethane
$155.00
Sale: $147.25(5% off)
Keystone 023more information

Keystone 023

Seashell Keystone. 12" height - Made from Polyurethane
$172.00
Sale: $163.40(5% off)
Keystone 024Amore information

Keystone 024A

Flowing Keystone. 12" Height - Made from Polyurethane
$150.00
Sale: $142.50(5% off)
Keystone 024Bmore information

Keystone 024B

Flowing Keystone. 16" Height - Made from Polyurethane
$338.00


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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