How to Install Beadboard Wainscoting - One Project Closer.29 Mar 2012 . Wainscoting: True wainscoting is a solid wood product. However, less expensive alternatives like medium density fiberboard (MDF) and vinyl wainscoting are available. Vinyl in particular is a great option for areas with moisture (like the bathroom), and it's easier to work with than MDF. However, it carries a.