Blocked stub stack Drainage and wastage systems and plumbing help, advice and answers

[Loweyk]

It seems i have a blocked stub stack with no access. The stack joins the drain run via an 87degree T junction with no access to rod and the stack itself is capped off and hidden behind plaster board. Was wondering if there is anything i can pour down the toilet to break down the blockage?

thanks in advance for any replies.

[plumbbob]

It is unlikely anything poured down a toilet will remove a blockage. A good place to start is to use a large plunger.