We have wooden window sills and live in a fairly cold house resulting in wet windows (condensation) and stains on the window sills. If that isn't bad enough we've started noticing mould right in the corners on the white sealant (sp?) and on the wood. We varnished the windows not long after they were put in (couple of years ago), but there are now water marks on the window sills. Is there anything we can do to fix this and stop it from happening in the future?
Buttons x