"David Micklem" wrote
| My sister has asked me to make up some (internal) shutters for a
| couple of her windows. They are intended to cut down on dust
| (by getting rid of the curtains - my niece is allergic) and
| also hopefully block some noise from the road.

Draught-proof existing windows, secondary glazing and roller blind.

This will have the advantage it will cut the noise all the time, not just
when the shutters are closed at night.

Owain