They did a great job of building our custom fit crawl space doors while on site. The doors are made of a rigid, stiff polystyrene board. Treated wood was used as a “door frame”, secured and weather sealed to the foundation. Our siding was modified and finished with PVC molding. Should last a long time. Would have been nice to have discussed colors before starting as it’s all white, but I don’t mind painting them to blend better. I would recommend them to anyone.