Masonite siding has several law suits in the works so do not know if is even available? May want to go to www.google.com and search for Masonite siding and see what come up.

Go to a lumber yard and they will have hardboard siding there. Masonite is just one of many brands of this type of siding.

Be sure to prime the back and all edges before you install the new siding and then apply at least 2 coats of an exterior acrylic house paint to the face of the siding.