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nanitamalia

Exterior window trim advice?

nanitamalia
4 years ago

My 1990s ranch home has vinyl windows without trim on the exterior. I’d like to add trim, similar to what this picture shows. It looks to me like this trim was added on TOP of the lapped siding rather than the siding being cut away first. (The trim in the pic is PVC.)

Is this a bad idea? The back (south side) of my house has flat wall boards that look like fake bead board, but the front (north side) has lapped siding. I live in rainy SW Washington state, where we get 40 inches of rain a year!

Obviously I would caulk the cap, but it would be tricky to thoroughly caulk the side edges.

Thanks for any advice you can offer.

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