Successfully Damp Proofing Your Home
... mortar course that sits at least 150mm 6in above the exterior ground level drill horizontally into the mortar course making 12mm ... http://www.simplifydiy.com/walls-and-ceilings/damp-proofing
Window Frame Materials
However a plastic thermal break can be placed between the interior and exterior components of the frame to overcome this problem http://www.simplifydiy.com/windows-and-doors/windows/window-frame-materials
Ventilation Of The Sub Floor Layer
In a cavity wall the airbrick should be inserted into the exterior leaf of the wall as for a solid wall but you will need extra long drill bits http://www.simplifydiy.com/walls-and-ceilings/sub-floor-ventilation