Draughtproofing wooden windows

[NinaRose]

We have recently moved into an old house with wooden windows that open sideways (so not sash). None of the windows have any kind of draughtproofing and cold air whistles through them. The windows have a sort of a shallow groove running along the outside of the frame which looks like it should have some sort of seal on it but none of the draughtproofing strips in our local shops fit this groove. The frames have a corresponding groove on the inside (so that the two grooves meet when the window is closed). Sorry if I'm not explaining properly! The groove is about 5mm wide and 3mm deep.

Does anyone know what kind of draughtproofing strip we should be fitting in the groove and where we might find it?

casement windows.

Look for Brush Pile draughtstrip. It is sort of furry rather than brushlike. It is able to fold out of the way when you close the window (or door) then spring out again to fill the gap.

make sure the paint is very clean, and preferably new, where you stick it. it does not stick to dirt, and sticks badly to rough old paint.

if not stocked locally, try ironmongerydirect.

or try online. It can be bought from glazing supply co's by the roll. it is used on sash windows as it is (probably) the only draughtstrip that will accomodate sliding.

It may be called smoke strip as a similar product is used on fire doors.

pps

or you could just use ordinary P or E section EDPM strip and put it on the closing surfaces of the frame, so the casement presses on it when shut. That will probably be easier to get.