Hi BM81,

Would like to share some understanding and experience I have on some of your questions. Other sifu's are welcome to correct me if I'm wrong.

Q2 - Usually PVC is used (Grey colored). For your own home get the thick one. Some people like to use Poly (black colored), it is durable, alot of farms use them for water piping but their fittings are more expensive. If you decide to get Poly then make sure it is SIRIM certified.

Q3 - PVC (Grey) and uPVC (White) difference can be checked out here: http://www.ehow.com/list_6861864_differenc...-pvc-pipes.html.

Basically you can use either one, your preference. However in Malaysia most use PVC (grey) for most of the piping and uPVC (White) for gutter and toilet plumbing.

You're welcome

Yupe...that makes sense . Thanks for the sharing