Wonder if this can be worked like normal wood and can be produced in the standard dimensions. One of the advantages of azek and other PVC sidings is that you can use your normal tools.
You can cut aluminum using woodworking tools if you need to. Assuming it's just for siding/roofing I see no reason a chop saw with an appropriate blade couldn't cut it.
Yeah, carbide blades will eat aluminum like butter. Just the other day I cut off a 3" x 3" slab of aluminum block with my table saw in 3/4" cuts. Wasn't sketchy, the saw didn't bog down at all, in fact ive cut woods that were far more difficult than that solid aluminum block.
