hi peihao83,
warranty covers in the things they do, like ceiling, carpentry, tiling, plumbling, etc...
included false ceiling as well.. well i have compared abt 7-8 coys before finalising it.
so i guess its ok. moreover the most important thing is the person.
if u feel comfortable with him , thats the most important thing to me.
but anyway thanks for ur advise too.. greatly appreaciate.