Repairing 18mm drilled hole through blockwork

[bloodything]

Hi,

I've drilled an 18mm hole through my external garage blockwork, and done a great job - except that I now realise the hole should be about 2 feet lower...

Interior doesn't matter, but the exterior is rendered. I am chiefly concerned about weatherproofing.

I'd be grateful if anyone would give me advice on repairing the hole then I'll drill a new one...in the right place.

Ash

 

[Nige F]

18mm isn`t a big problem it`s what the cavity wall insulation guys do - just make a sausage of just moist sand/cement and push it in

 

[bloodything]

Thanks very much, I had done a search but it only came up with minor interior repairs and I can manage those!