today i asked the grill ppl about installing poly skylight,
he quoted me RM22/sqft
and I asking what's type of poly he use, he just say "good one" but not mention the detail....

and god dang it .. i'm not going to use this contractor, he's sub-con of my main con doing grill, the grill finishing is so blardy char... just called up main con to complaint.
will source from somewhere else.