Symptoms
- Won't slide up or down
- Feels jammed at a specific point
- Track visibly dirty or painted over
- Hasn't been opened in a long time
Likely causes
- CommonPaint sealing the storm sash to the trackExterior repainting easily bridges the moving parts if not masked.
- CommonCorroded aluminum trackYears of weather exposure oxidize aluminum, creating friction and buildup.
- CommonDebris (dead insects, dirt, leaves) packed in the trackStorm windows collect debris in the channel since they're rarely opened.
- Less commonBent track or frameImpact or age can slightly warp the aluminum frame.
What to do
- Score any visible paint seam along the edges of the storm sash with a utility knife.
- Vacuum the tracks thoroughly, then scrub with a stiff brush and soapy water to remove corrosion and debris.
- Rinse and dry the track completely before trying to move the sash.
- Apply a silicone spray lubricant along both tracks.
- Gently work the sash a small amount at a time rather than forcing it in one motion.
- If corrosion is heavy, a fine steel wool pass on the aluminum track (not the glass) can help before lubricating.
- Once free, operate it a few times each season so it doesn't seize again.
Tools and parts
- Utility knife
- Stiff brush
- Silicone lubricant spray
- Steel wool (fine)
When to call a pro
Call a handyman if the frame is bent or the storm window won't free up after cleaning and lubrication.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.