I got new windows fitted but the window fitter didn't leave a recess inside. Now I'm trying to fit architraves and window sills but I'm not sure where they should be fixed against .
When I did some research, I can see there should be a wooden frame sitting on a recess around a window so architrave can be fixed against the wooden frame. But in this case there is no recess , so no place to fit wooden frame.
Can you advise if it's best to fix architrave/windowsills against brick wall in this case ?