UK Seal wall holes with main cables

[ionionascu]

Hi. I live in an older house and I have old white twin and earth cables going through walls in large white pipes. Unfortunately, some mice managed to squeeze through these pipes so I want to seal all the gaps. Can you please recommend a sealant that can be used for this? I read that fire rated expanding foam is not ok for this and it is also not clear to me whether general purpose silicon is ok. I have tried searching for a similar thread on this topic and I could not find one so if there is one, please give me a link. Thank you

 

[davesparks]

General purpose silicone sealant is fine if it's just mice.

Expanding foam is no good as the mice can burrow through it.

 

[Dustydazzler]

A bit of white sealant will normally be okay to seal up the end of a conduit. you can even buy fire rated sealants now which some sparks use to fill in gaps behind fuse boards etc

 

[brianmoooore]

Try not to seal it in a way that cannot be removed fairly easily, or you may get some serious mutterings from a future electrician working for you.