Replacing Cast Iron stack with plastic...

[Alz0r]

Hi all (again),

Following on from my previous post, I've managed to talk the customer around to replacing the cast iron stack with PVC.

I intend to cut the CI down in sections (1m or less at a time) using an angle grinder and a claw hammer. Even thinking of supporting the section I'm cutting with a ratchet strap just to be extra carful!!

I suppose what I'm after is some top tips for replacing a CI stack as this is my first attempt, all advice welcomed,
Cheers
Alex

 

[kevplumb]

tip 1 its heavy cut it into managable sections 2 days on the job is better than a week on your back

tip 2 dont rely on the old fixings(when you get them off you will see why) a strap is a good idea make sure its well anchored

 

[bathstyle]

Cut a slot into the bottom of the stack and slide a piece of ply into it,stops any bit falling into the drain.

Oh yeah, it's always better to get two peoiple doing it, up two ladders, the last one I did took an hour, they are [pretty simple to get down.

Strictly speaking a scaffold tower should be used, but in the real world.........

 

[Alz0r]

thanks gents, will definately use the plywood technique.

got a lad to come and help me anyway, so hopefully wont break to much of a sweat

 

[Alz0r]

quick question -

i need to put on a weather collar to sit ontop of the conservatory roof - but I cant find an angled collar (about 45degrees) in PVC. I COULD boss and dress one out of sheet lead, but good god I can't be arsed with that!

Any suggestions?

 

[kevplumb]

selkirk do one with a rubber collar you cut to fit

weathering slate

 

[bathstyle]

Yep, that's what i often use, then pop a chinamans hat on top of it glued with solvent. or is that not P.C?

 

[kevplumb]

P O C and not if its a drain vent