Check weather stripping around operable window and door panels. Clean and fluff the weather strip each year before the rainy season. Make sure it is not excessively worn and seals evenly.
CHECKLIST
Check every 6 months or sooner:
Check for condensation.
Check for mold.
Security, hinges and operation.
In some areas, clean the frame surfaces.
Check once a year (before rainy season):
In all areas clean the frame surfaces.
Clean sill track and weep holes.
Check for sealed joints.
Check for properly operating hardware.
Check for roller operation.
Check the weather strip.
KEY DO'S AND DON'TS
Do clean the frame surfaces;
Don't use a razor blade, putty knife or abrasive pad.
Do use a glass cleaner or mild detergent;
Don't use any petroleum-based cleaners or solvents.
Do clean tracks and weep holes;
Don't use oil-based lubricants or damage weep hole covers and baffles.
Do check weather strip and hardware;
Don't live with poor performing components - replace them.