Not using facades will lead to many problems, especially when using natural wood. It can become extremely worrisome because many problems can arise using natural wood. Wood looks beautiful but will begin to crack and split in the heat and rain. More importantly, however, is that wood is porous, and can and will cause your house to grow mildew and mold over time. You can clean wood yourself, but you’d probably be better off hiring professionals to seal your wood on a regular schedule (which could cost upwards of $1,000-$2,000 or more, depending on the size of your house).