How to plumb a new sink in the garage

[liam81]

I want to try and install a new sink in my garage. The other side of the wall is my washing machine with a hot and cold feed and a waste pipe which goes through the wall and down the side wall of the garage outside.
My combi boiler is also in the garage and hot/cold water pipes (separate to the washing machine pipes) also run up the garage wall to the house.

I assume I can connect my sink to the existing waste pipe in the garage that the washing machine uses?

Can I also feed off the hot/cold water pipes that are the other side of the wall? I can't see an isolation valve, so do I turn the water off at the mains, drain the system, then do I cut the pipes and fit a tee on each pipe to go through to the garage?

Is it as simple as that?? I'm guessing not...

Any help appreciated.

 

[moggridgeplumbing]

You can make thing complicated if you want, but I cannot see anything wrong with your list.

Little need to drain the system, as your cutting into the hot and cold pipes which are off the mains - as they are going through the combi. Any little water that is still in the pipes can easily be collected in a suitable container. Open up all your taps first after you have turned off the main stop valve.

 

[Hugh Jaleak]

Make sure its all (including boiler etc if not already) suitably protected from frost.

 

[liam81]

Good point Hugh, thanks.

 

[CLairehead]

If your boiler is on the correct side of the garage wall you can probably tee into the cold inlet and hot oulet from there. Its a bit difficult to say without a photo.

As its in your garage, I would fit a dry trap like a hepvo as you will be unable to protect the water seal from frost.

 

[Nige F]

And a Hep V O is always good when teeing 2 wastes into 1