Upgrading the Bathroom Waste Pipes.

I was not sure how to tackle this. I used domestic style 32mm grey waste pipe, it's greater bore would improve the flow. Push fit seemed the easier option, apart from those decisions it was make it up as I went along!

The new pipes will be shorter and use a waste container to the side of the caravan.

Before starting work, the caravan was checked to make sure it was level.

The bathroom waste pipes (shower and sink)emerge behind the wheel and head to the rear.	Both waste pipes terminate at the rear of the caravan.	The pipes are brittle, temporary repair of duct tape did not work. Shower outlet furthest away.
To remove the old pipe unscrewed the clips, will reuse the screws for the new clips.	The shower outlet, the shower tray is just above.	The overview; shower outlet on the left, sink outlet next right, this will have a standpipe from the sink, then drain to the right.
The sink outlet; tried a hole cutting bit, but could not centre it, marked around a fitting ready for drilling a series of holes.	The holes are close together, only drilled through the bottom ply.	Used a sharp blade to join up the holes, then took out some of the styrofoam to accommodate the fitting.
Trial fit (notice I have put the sink fitting on the wrong way round!) To get a fall in the pipework....	used some pressure treated timber 18mm thick, cut one piece to 8mm, used contsruction adhesive to attach to the floor....	then a couple of screws to hold in place while the glue sets.
Better view of the sink standpipe that fits into the "T" piece fitting.	Back to the shower, to make sure there is no splash back a short piece of the original pipe (a sound piece from inside the caravan) was attached to the outlet.	The angle piece fits over it, pipe clips secured to the timber with original screws, drilled pilot holes first.
Two pipe cilps should be enough. Notice the "fall" on the pipe created with the timber, thinner piece to the left.	Now for the inside, this shows before the standpipe was fitted,hot and cold supply pipes tie wrapped to the waste.	To make life easier, used the original flexy waste pipe from the sink left long.
It goes down the standpipe approximately 150mm.	Then a pipe clip screwed to the wall keeps everything in place. Tie wrapped the hot and cold pipes to the standpipe.	A better view of the end of the pipe, which, when not in use is covered with an end cap.
Spot the waste pipe?	A closer view.	In use an extra piece of pipe simply pushes into the end replacing the end cap and the outlet is directed into the waste container.

If you would like to see how I prepared the pipe ends; Click Here.

After using, it was decided to upgrade the standpipe to a trap, to stop any smells from entering the bathroom.

It was a simple matter of cutting the original standpipe down to fit the trap. Used the same bracket to secure the trap to the wall. Then the flexible pipe from the sink was cut shorter and pushed in the top of the new standpipe above the trap.

Put a jubilee clip on the tube attached to sink as it "fell off !!" when we were filling the system on a trip away. Putting this on it will make sure it will not come adrift again.

The shelf had to be altered slightly to fit around the nut on top of the trap, as it was bigger. Used a coping saw to cut out. Now that should be the bathroom finished.

Page Created 16th June 2008/Updated 15th October 2008