Fitting a new towel radiator

[HawkEye244]

So I'll be using the 15mm copper but wanted to know which size drill bit to use?

It has to pass through a layer or two of brick (cupboard on the other side where the connection will be made to the existing system).

Drilling through tile obviously so I was thinking of using this to help the drill be steady:

http://www.screwfix.com/p/erbauer-diamond-tile-drill-guide/84524

Or some masking tape might do the trick I suppose.

Once through the tile I was going to use a 16mm masonry bit but will this give me enough leeway to comfortably get the 15mm copper pipe through the wall or should I upsize it a little more?

Thanks in advance plumbs.

 

[footprints]

You need to sleeve copper tube through a brick wall, use overflow pipe or similar sized conduit and size your drill slightly larger than the sleeve.

 

[polesapart]

I'd go 18 minimum, and use a diamond core for the tile.

On soft tile you can get away with with normal masonry bits on non-hammer action starting with a small bit e.g. 6mm and working up to the diameter required.

 

[HawkEye244]

Thanks foot

and poles for the drilling tips.