shower tray on concrete floor

[dom brennan]

hi guys I've got my first bathroom job on my own, the customer wants the shower tray on the floor and its a concrete floor so other than building a base for it and having a plinth can you bury the trap and waste pipe its not ideal incase there is leaks in the future i know any suggestions thanks dom

 

[mountainman]

Bury the trap and pipework, just make sure that the joints are good.

 

[Millsy 82]

Bury the trap and pipework, just make sure that the joints are good.

Same as above and keep joints to a minimum

 

[SimonG]

6 inch core where the waste is going and then break out for the waste pipe. Fit the waste to the tray. Fit a length of pipe to waste and lay it into position and then work from there.

 

[Best]

You could sometimes be able to finish fitting fit the waste pipe, trap & tray completely on a concrete floor & be able to test it for leaks, just to reassure yourself it is sound.
To do that, - cut the entire track for the waste pipe but do the part for the trap wide & to beyond where the outer edge of the tray is going. Bed tray in place & then fit trap to waste pipe & tighten it up before pushing it in place & sealing the waste to trap. Then you will have a gap around the trap to look in at to check for leaks while you fill tray with water. Just need to push some weak sand & cement mix (using a piece of wood to help or something else suitable) fully in around trap area later.

 

[kris]

If your fitting yourself with no assistance what i tend to do is , lay tray mark where shortest run and waste hole is , cut trench ( just enuf for pipe and bit extra round top access trap, i then fit my waste pipe attatching it to the bottom half of the trap then have a dry run and lay the tray down so you might have to manouver bottom half so it lines up square with waste hole, once our happy bed down with cement filling trench aswell and put sealant on the bottom half of trap which is laying in trench , lay tray on top and screw top half of grating onto the trap then level tray, once all set i seal inside the trap where the 2 points meet if you follow me , good luck dom and good call as riser kit last resort n doesnt look so good, i had to build a base 2 weeks ago because the existing 4" was half under half over ,

 

[dom brennan]

thanks a lot for the advice much appreciated