Gap in external wall around pipe

vinnym70

Hi all - first post so please be kind.

I have a water softener with an overflow pipe that hangs out of the external wall behind it.
There's a small gap around the pipe which I'd like to plug.

However, the pipe is attached to the water softener so I can't cement it in place or put expanding filler around it as the softener needs to be able to be removed (with the pipe attached) for pretty much any maintenance other than adding salt.

I'm pretty sure I've seen some small plastic plug type things that fit into brickwork and have an internal hole for the pipe. BUT - I'm blowed if I can find what they're called to see if I can find one the right size for my needs. I'm all googled out.

Any ideas what these are called or whether I'm barking up the wrong tree?

Vince

Lorian

Post a photo from outside, close-up. you'll need to put it on some photo hosting site and paste up the link with some spaces in it as you are new.

What is the diameter of the pipe, and the approximate diameter of the hole?

you are probably looking for some sort of rubber grommet.

jk0

I'd crack on and mortar it. (Those plastic things deteriorate.)


Any time you need to remove softener, you can disconnect at the softener.

stuart45

I've seen cable grommets, but not for larger pipes. You could use a slightly larger pipe as a sleeve, and then form a seal with the mastic gun,

Lorian

I was thinking something like this - toolstation do two sizes, but you can get others

It could just be pushed in from the outside. bit of fairly liquid to help it on if required.

https://www.toolstation.com/boss-rubber-adaptor/p37469

FreeBear

Assuming the gap isn't huge, smear some grease on the pipe and then put a thin bead of silicone sealant round it.

Jonesya

Have a look at foam insulating tape - it's used for sealing gaps and for draught excluding around doors and windows, comes in various types and profiles. Could put a couple of turns around the pipe.

If the gap is quite small, you could use some regular tough tape, like PVC insulating tape, wrapped round to increase the diameters and make a tighter seal.

Alternatively, depending on the size of the gap, you could sleeve the pipe. So get another bit of pipe ever so slightly bigger, seal this pipe into the brickwork with regular outdoor silicone sealant, then push the water softner pipe through this fixed sleeve.