plywood or melamine

[wyz]

I'm gonna be building some enclosure pretty soon.

Plans are made, shopping for prices in done..

I wanted to build them using plywood that I would treat with a special enamel to waterproof it.

I could also use melamine... if I take really nice melamine it comes to about the same price but easier since I don,t have to varnish it.

Can any body tell me what would be the downsides of using melamine.. I would silicone all the joints so that water doesn't go through...

Do you think it's as reliable as protected plywood ?

It would be for JCP so it will be misted with water and I might also use a heat pad. Can melamine crack/melt if heated.

thanks.

WYZ