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Polyurethane Window Arch Trim

Polyurethane window arch trim consists of curved, decorative architectural mouldings designed to enhance the upper section of both interior and exterior windows. Perfect for adding architectural interest and highlighting window frames, these arched headers elevate any building facade. Unlike traditional plaster, our high-density polyurethane formula is exceptionally lightweight, putting no static load on the structure while ensuring quick and easy installation. It is completely weatherproof—resistant to rain, snow, frost, and UV rays—meaning it won't crack, rot, or peel over time. Easily paintable to match your exterior color scheme, Polure’s precision-molded arch trims deliver sharp details and a flawlessly smooth finish for long-lasting curb appeal.

8 products

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Frequently Asked Questions

Will polyurethane window arch trim degrade outdoors?

No. High-density polyurethane is highly resistant to harsh weather conditions, meaning it will not crack, rot, warp, or peel like wood or plaster.

How do you paint polyurethane window arch headers?

After installation, they can be painted directly with any high-quality exterior acrylic latex paint to match your building's color scheme.

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Decorative Polyurethane Arched Window Trim & Headers | Polure