Arched Window Trim
Arched window trim is a curved exterior molding designed to frame the circular or arched tops of windows and doors. Ideal for curved window edges, round windows, and vaulted entryways, it prevents thermal bridging, blocks water infiltration, and adds an elegant architectural line to the facade. Unlike fragile plaster or easily deformed EPS foam, polyurethane window casings are lightweight, durable, and put no structural load on the building. Engineered from high-density polyurethane, they offer superior resistance to impacts, wind, frost, and heavy rain. These crack-resistant profiles can be easily painted with exterior paints. Polure manufactures custom curved trims with millimetric precision to perfectly match various window radii.
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Frequently Asked Questions
What is arched window trim?
It is an insulated, decorative polyurethane exterior molding designed to frame the curved or circular outer edges of windows and arched entryways.
Does polyurethane arched window trim crack over time?
No. Thanks to its high-density polyurethane structure, it does not crack, peel, or warp due to thermal expansion, contraction, or harsh weather.








































