Should the gap between 2 brick courses be parallel?

ipri

Hi...having an extension....the inner and outer brick walls are going up...these are not parallel....100mm at one end....130mm at other end. These dimensions where chalked on the inner wall by builder before the outer wall was put in...he must have a reason? yep..I'll ask him when he comes back....could this be a problem? thanks

Furts

Yes they should be parallel.

Moving on. Does it matter? From a structural perspective, provided your floor joists, or roof timbers (or both, if it is a two storey extension) receive an adequate bearing and support, then probably not. However there is a requirement for wall ties to have an embedded depth of 50mm. You may fail on this, although additional, longer, ties might be purchased.

Of course, I am assuming the walls allign with the foundation walls. Do they?

ValHaller

It may be a cunning way of getting the room square on the inside, while lining up with something on the outside. As he has marked the dimensions and built to them, I would say he almost certainly knows what he is doing and will have his reasons and may well appreciate being asked if you do it in a non accusing way. You really will not notice once it is built.