What type of shower trap to fit

[geezza]

After some advice on the type to shower trap I can fit.
I have just had a loft conversion and I am fitting a new shower from scratch. I need the waste run under the floor but the shower trap needs drop through 25mm plywood first. Can some one recommend a shower trap that drops low enough and can be cleaned from the top.

Cheers
geezza

 

[BingoBongo]

http://www.diy.com/diy/jsp/bq/nav.j...ndid=9272171&ecamp=trf-005&CAWELAID=266882934

something like this should do.

cut a a hole in the ply and floor board so the whole trap is beneath the floor.

 

[geezza]

Thanks BingoBongo, but this isn't deep enough, there's a drop 70mm from the shower drain hole to the ply then you've got the 25mm ply (the 25mm ply is the floor not a plinth). ideally I need the horizontal waste pipe to start below the 25mm ply floor so the drop from the shower drain hole to the top of the waste pipe needs to be at least 95mm.

 

[BingoBongo]

is it on legs?

cut ahole in the floor and use a couple of bends or 1 1/2 flexi to take pipe under floor

 

[geezza]

Yes it is on legs. Do you mean fit the trap and connect a flexi pipe to the trap and take that below the ply floor? I may still need to cut a hole in the floor for the bottom of the trap. As it is a loft conversion I need to maintain the fire seal with the room below, is it ok to fill the gaps in the hole with expandable fire resistant foam?

 

[seco services]

fit a dry trap horizontal then you won't have to cut your wood at all if thats what your hoping for.

 

[geezza]

I do need to cut the floor as the shower tray is not on an outside wall and the waste needs to go under floor. I was hopeing to drop it it straight down from the tray and then run the waste pipe to the outside wall.