New sill 'offered up' with joints cut out to accept small sections added to the ends of existing casements.
This picture shows gap where old sill was removed revealing the casement ends ready to accept the new sill below.
Finished: Even off square windows can be brought back to working order.
Call Sashman
07812 666243
01769 579072
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email
sashman.window@yahoo.co.uk