Fitting cleats question

[HawkEye244]

So, this may sound like I'm over thinking the job but hear me out ...

I've got 2.5mm2 SWA to run along a section of wall that is stone with cement render.

Using SS screws and plugs I am going to fit the SWA to the render.

Should I give any consideration to the fact that by using plugs and screws I am creating a channel for moisture ingress which would lead to the render being blown over time ? Even if angling the drill hole water always finds a way in..

I was thinking some mastic or external silicone may be beneficial as you would do an outside double socket installation. Thoughts ?

 

[sparkwright]

I don't think it's ever been a problem.

The biggest problem is the screws eventually rusting.

 

[chivers67]

I wouldn't worry about it either. The biggest problem you may have is drilling into it without it cracking somewhere, may need some non hammer action pilot holes into it first

 

[Sureitsoff?]

Blob of silicone round the screw hole if you want to stop any potential water ingress.