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Aluminum trim wavy on new house.

8.9K views 35 replies 16 participants last post by  firehawkmph  
Hung siding for over 40 years. Like the others said, it’s caused by the aluminum expanding and contracting. where it’s really rippled it looks like they pushed up on it too hard while nailing. If aluminum trim is installed in cold weather, it’s going to ripple even more when the summer rolls around. 10’ length is very common, my brake is 10 1/2’. More bends makes it more ridged, but what you see here is probably the most common installation, one bend. This job is overly sloppy and could have been done better by someone who knows what they’re doing.
Mike Hawkins