hardwood plates to bridge the gap between timber window frame and wall.
I just packed the space with more mastic.
I probably did it wrong, as I have no idea...
A tip for the mastic, prior to removing it, is to oil it (with boiled linseed oil) - This should be done as a matter of course, every 10 years or so, but will soften it a little and make it easier to remove.
Let's assume the mastic option and the timber plate option are both decent.
I'd not thought about any options other than mastic until the chap turned up and pointed out that many of my neighbor's flats have the hardwood timber plate/bead detail. Looks neat enough to me.
I just packed the space with more mastic.
I probably did it wrong, as I have no idea...
A tip for the mastic, prior to removing it, is to oil it (with boiled linseed oil) - This should be done as a matter of course, every 10 years or so, but will soften it a little and make it easier to remove.