Gas Pipe Entering House Unsealed

Mumser

I've been trying to improve draughts around windows, doors, vents etc on our house. I looked closer at the gas pipe coming from our meter into our kitchen.

The photo attached shows a large gap between the sleeve and the gas pipe as it enters the house. I cannot get access to where the pipe comes into the kitchen as it's in a corner covered by kitchen units. So I can't see if it is sealed internally. I wouldn't be able to reach it to seal it anyhow.

Can I use some kind of sealant on the outside wall to plug the gap around the pipe? If so would silicone be safe touching the pipe?

I've tried researching and I remember reading somewhere that the gap allows for ventilation in case the pipe ever leaked, rather than gas leaking internally ??? I do not want to jeopardise safety in my efforts to reduce heating costs!

Any more informed advice is welcome. Many thanks.

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10-10-20

You can seal one end of the pipe!