Hi,

 

I am looking at fitting a through-the-wall aircon unit to a domestic property. The unit wants two 162mm diameter holes spaced 293mm apart horizontally (centre-to-centre, ie leaving 131mm of brickwork between them).
I will need to drill these into a structural solid brick wall. The brickwork is in reasonable condition. I'm unsure of the thickness of the wall, I guess it's double brick. The holes will be on the ground floor of a two storey house. My questions are:

* Will it be safe to drill these holes without placing any lintel support above them?

* How far from the edge of the wall (corner of house) should these be?

thank you!

 

M

Edited June 26, 20242 yr by moonbug
more detail

wont need a lintle crack on.

 

If it was new build it would need a tray above it though .....

9 hours ago, moonbug said:

 

* How far from the edge of the wall (corner of house) should these be?
 

 

Min distance should be no less than 3x the diameter of the hole, ideally 5x diameters. So 500-800mm ISH.

 

How are you planning on making these openings? Hiring a core driller? 162mm will be tough work.

Thank you Conor, very helpful - yes, diamond core drill.