I’m having sliding doors fitted. I already have the opening in place and just had the survey for a 2 pane, 3.7m glass sliding doors. The back of my house is about 3ft higher than ground level so we have decking that you step onto and down stairs.
The doors have a 125mm track and typically sit about 25mm back from the outer edge of the outside course of brick, so basically I need 150mm solid base for it all to sit on. My outer course of bricks are 100mm wide but then there is a cavity approx 50mm wide then joists (see image). What is typically recommended in this situation to strengthen/widen this area ready for the new doors?
