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gselby · Joined: 27 Mar 2008 Posts: 5 Location: London

Hi there,

I am moving the toilet and sink in the bathroom and have a question about knocking holes through the external wall.

With the toilet soil pipe I will obviously need to knock quite a large hole through the wall.

Am I right to use a hammer and bolster to do this? Is the right procedure to knock out a few bricks, line up the pipe and connect it to the toilet. Once happy, cement it in place?

With the sink waste, the pipe is obviously a lot smaller yet larger than any masonry bit I’ve seen for sale in DIY stores. Do plumbers have a special drill bit for drilling a hole to the outside for a sink waste pipe?

Thanks in advance for you help.
Glenn

thescruff · Moderator Joined: 03 May 2003 Posts: 4164 Location: Bath

If you cut the bricks out cleanly by cutting the joints first you can re-use the bricks to make good.

The smaller holes can be drilled with a diamond core drill, and they can be hired from a tool hire shop or purchased.

gselby · Joined: 27 Mar 2008 Posts: 5 Location: London

Great! Thanks for the info.