Double Glazing

[George]

is there a term for each section of double glazing frame pieces?

ie the trim that the bottom of the frame sits on.

for instance supposing the bottom of the sill is not level and would leave a gap so S&C would be applied and then the strip sits on the S&C to ake it level for the frame.

S&C being (sand&cement)

Thanks

[Cicero]

================================== If you mean the frame generally (not just DG) then these are the most common terms:

The bottom of the frame is the sill, top rail is head(er), sides (verticals) are jambs, intermediate verticals are mullions and intermediate horizontals are transoms.

The frame (top, bottom and sides)of opening lights are called sash.

PVC frames usually have a separate sill - wooden frames usually integral.

Cic.