In message ,
Weatherlawyer writes
On Wednesday, 18 May 2016 21:24:24 UTC+1, Tim Lamb wrote:

Q1. The existing windows are narrow spacing double glazed in
brown painted pine. Two or three panels are blown and need
renewing anyway.

Can you get hold of rebated units? Get one or two spares as there could
be more on their way out and they might be slightly cheaper to buy that
way?

Rebated DG is new to me. I suppose the obvious would be triple glaze.
I'll bear it in mind. Currently I am thinking of new aluminium
throughout.

--
Tim Lamb