I'm awaiting delivery of this recycled paper board called Rewall Nakedboard that looks really promising. 4'x9'x3/8" boards and they don't require any finish work since I like the design of the scrap paper design. Supposed to be plastic coated, water/mold resistant,and will hold screws like...
http://www.ebay.com/itm/King-KB2410-1-EC-B2-240-208V-10-000-7-500W-Large-Area-Industrial-Electric-Heater-/381453388362?hash=item58d064ca4a:g:WaYAAOSwo6lWM9mw
I thought this looked like a killer deal on a upper end King 10000 watt Electric heater. I ordered mine today.