Need help cropping lap siding profile along angled line!

Quick question: does anyone know how to crop out this lap siding along the line I have drawn. since it is a lap profile i dont know how to crop the roofline out.

Are they components or groups? If so they’ll each need to be made unique.

They are a group Dan, though it does not give me an option to make them unique, i pulled them from the 3d warehouse

This is what im trying to get rid of.

If you have SU Pro and the roof and the clapboards are all solids, you can use the roof as a cutting object to subtract from each clapboard using solid tools. Otherwise, copy the surface from the rake soffit, paste in place for each clapboard, intersect with context and erase the extra material.

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That worked great, thank you very much for your help !