Summer heat is always followed by summer rains. After a dry and dusty summer, there is a little preparation that goes a long way. Getting your windows ready for rain will help them perform the way they were designed to operate.
Summertime can add a lot of dust that causes havoc with all types and qualities of operating windows.
Dirt and dust builds up to the point of clogging these openings. This causes water, which normally drains out, to spill on to the window sill or inside the wall. This is a maintenance issue that should be on your spring cleaning list to inspect.
Using a paint brush and a shop vacuum to tackle this problem also gets dust that has found its way into rollers, locks and other operable parts. It is a relatively easy job to prevent un-necessary damage.