Exterior Keystones
Description
Add a bold architectural accent above windows, doors, and exterior openings with these decorative keystones. Made from lightweight EPS foam and coated with a lightweight polymer-modified acrylic-based flexible cementitious coating, they are weather resistant and designed for durable exterior use. These exterior keystones pair well with stucco and other facade finishes while delivering the look of traditional architectural detailing with easier handling and installation. Available in multiple size options, they are ideal for creating a refined, finished appearance on exterior surrounds and trim applications.
- Lightweight EPS foam core
- Polymer-modified acrylic-based flexible cementitious coating
- Weather resistant for exterior use
- Pairs well with stucco and other facade finishes
- Ideal for windows, doors, and exterior surrounds
- Traditional architectural look with easier installation
- Available in multiple size options
Shipping & returns
Shipping rates and timelines will be shown at checkout. See our shipping policy and return policy for full details.
Need freight or a larger shipment?
Request a quote for freight coordination, larger quantities, or custom profiles.
