i remember those, industrial 'baseboard' i used to sell that stuff when i worked at the hardware store when i was in HighSchool...ugh...too long ago
some problems i see with that:
hard to 'tool'
flexible across x-axis (wouldn't you want something that was stiff?)
how are you going to paint it?
if you can get it to work; great, more power to you. just wanted to alert you to some hurdles you may have before you invest time iinto that.