DO'S AND DON'TS
OFTEN
Clean windows with glass cleaner or mild detergent. SILICONE SPRAY can be used to lubicate metal patio door ROLLERS. (Not oil base products)
PERIODICALLY
Clean window frame surface, track and weep holes. Check weather stripping/hardware to be sure they are in good working order.
DON'T ~ use razor blade, knife, abrasive pad on frame! DON'T use petroleum based cleaners/solvents or oil based lubricants. Use water based Armour All only. Also never use force from a hose or powerwasher on exterior windows!