aluminium window frames into existing double brick cavity

Poor user name but here we go,when i install these i have several ways to use,on finished brickwork sometimes i use an angle same colour as window siliconed to wall and frame, screwed to brickwork,coloured pop riveted to frame.If rendering angle to top in and out and a few blocks in cavity,if your brave and brickwork is very good do without angle but be warned a couple of mm to big the frame will not go in.

hey boydie im as dumb as dumbo lol but dose the reveal size matter as i just got al windows to put in a al clad house which isnt built yet and where dose the flashing sit sorry to rain on your thread dumbo lol

Thanks boydie63, thats good advice. It worked well for the little window, just need some help lifting with the big one now.
Good luck bingoshelley, either of the methods or both work well.