sleeving

[hammers4spanner]

In the midst of a new heating install and was installing flow /returns and a new 22 mm gas run . As im taking the pipework through property i have come into bathroom which is next to the kitchen which is where the boiler is situated.Removed bath panel to take pipes behind bath as easiest route and through [party wall into kitchen . Where i had taken the gas pipe through the party wall i had sleeved as normal then thought whats the point of that sleeve .Where the hot and cold had previously been bought through from kitchen someone had smashed a foot square hole in the party wall.
i was goinf to stick a vent in the bath panel anyway but what is the logic of sleeving through a cavity where someone has demoilished a decent part of it . Am i to patch up this part of the wall so the sleeve would do as it should stopping gas into a cavity??Was thinking expanding foam but wonderdd if that is correct procedure on this occasion

 

[Barry98]

ive had a few of these over the years and ive just patched up , dont see the harm if you dont though so long as its sleeved to protect anything falling on to it

 

[zeebeedee]

I'd just do it anyway. For the sake of an extra 2 mins zero comebacks

 

[AWheating]

make good the wall imo.

 

[GrahamM]

The sleeve function is not only to prevent gas escaping into the cavity, it is also to protect the gas pipe from the potential of corrosion from lime etc in building material. Weither there is technically a cavity or not you would still require the sleeve.