This looks like a good material for top and sides of a teardrop also not to $$
Top -Rubber http://www.rvsurplussalvage.com/catalog ... ct_id=1883
Sides -White Aluminum http://www.rvsurplussalvage.com/catalog ... uct_id=426
Filon
http://www.rvsurplussalvage.com/catalog ... ct_id=1879
Aluminum http://www.rvsurplussalvage.com/catalog ... uct_id=419