thank you for all of your help. I think I will try the bastion moulding flashing - great tip! As well as waterproof instructions for permanent gap f ...

Thank you all for your help.  first pic is the outside where the Hebel thickness means you can't get right at the frame externally  we have put flas ...

We have large sliding doors to external patio. We have traced leaks back to both sides of sliding doors where we can see the builder has left gaping h ...