Winter Screen Storage: How to Avoid Warped Frames and Mold

Once storm windows are up and screens are out for the season, it's tempting to just shove them in a garage corner and forget about them until spring. But how you store screens over a Minnesota winter has a real impact on whether they come out in good shape — or bent, moldy, and ready for the trash.

Where NOT to Store Screens

A few common storage mistakes we see a lot:

• Stacking them flat under heavy items — this is the number one cause of bowed or warped frames
• Leaning them against a wall unsupported — over months, gravity plus temperature swings can bend even sturdy frames
• Damp basements or sheds with condensation issues — moisture trapped against mesh and frames is a recipe for mold, especially if screens weren't fully dry when stored
• Piling multiple screens loosely together — increases the chance of mesh punctures from corners and hardware

Better Ways to Store Screens

• Store screens upright in a rack rather than stacked flat — even a simple DIY rack made from scrap wood works
• Keep them somewhere dry and temperature-stable if possible — an insulated garage beats an uninsulated shed
• Make sure screens are completely dry before storage to avoid trapping moisture against the mesh
• Label each screen by window or door location if you have more than a handful — this alone saves a lot of frustration in spring

Don't Store Damage — Fix It First

If a screen frame is already bent or the mesh is torn, don't just tuck it away and plan to "deal with it in spring." Small damage often gets worse in storage, especially if a warped frame is forced to sit at an odd angle for months. It's better to repair or replace it before it goes into hibernation.

What Winter Storage Damage Looks Like Later

Signs that a screen didn't store well over winter:

• Frame no longer sits flush or square in the track
• Mesh has new stretching, sagging, or small holes that weren't there in fall
• Mold spots or a musty smell on the mesh or frame
• Spline that's cracked or brittle from cold, dry storage conditions

Catching these early in spring — rather than waiting until you actually need the screen in place — gives you time to get repairs done before bug season starts.

Twin Cities Screen Solutions handles window screen repair and window screen replacement in Hampton, Hastings, Cottage Grove, Woodbury, Eagan and across the south metro. We also build custom screens for odd sizes and fix Andersen and Larson storm door roll-up screens.

If your screens came out of storage looking rough, call or text (651) 243-1273 or request a free estimate before spring gets busy.