Tru-Exterior siding and trim
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Has anyone used these products? How do they compare with Hardie siding? Pros/cons?
https://truexterior.com/wp-content/uploads/2018/10/truexterior_brochure.pdf
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It seems that the product is approved for use in Wildland Interface areas. I'm guessing this is something that is required by California. I can't find any info on how long it lasts in a fire, although since the siding doesn't have any woof fibers in it it's probably a long time.
I used it on the garage I built last winter, and am installing 2500sf of nickle gap siding and TruExterior trim on the house next month. It is a very good product for fire-prone areas: while only rated "Class B", it doesn't burn. My test consisted of setting a wide open propane torch in front sof a 2*6 wall covered with siding, and waiting to see how long it took for something to catch fire. Half an hour later, the only thing that had burned was the primer; the siding suffered no other damage.
It also doesn't suck up water, which isn't true for either Hardie or LP Smartside. The one caution I'd share is that it's pretty floppy, so you really have to be careful with 16' boards. Otherwise, it machines with standard woodworking tools; I've cut, routed and sanded it with excellent results. Featherboards are helpful for keeping the flexibility under control...