We had a window replaced, a security one so presumably won't move in any way (to go with a heavy duty door and metal frame). The job was done badly and we have had the company back several times already, the guy said he would come back when the rain had stopped and fill it but we have had enough because the repairs never work. Water comes in from somewhere so I don't want to leave it. It is outdoors.
So, I am going to fill it, while the weather is dry. The question is what with? The brickwork has been broken off, so do I use mortar or expanding foam? I have looked at both but not sure which would be best.
Also, I can't use a filling gun, physically unable to do it.I am thinking of using ready mixed mortar.
Any thoughts and suggestions please?