Dust, Wind and Window Seals

Stand outside with a lit stick of incense on a windy afternoon, hold it near the closed window and watch the smoke, and the leaks show themselves, a test that san bernardino new windows petersburg4u treats as basic. New windows in San Bernardino, CA take the full force of Santa Ana winds, which push fine dust through gaps that look sealed.

How wind drives dust in

A Santa Ana wind can push air against one side of a house with real pressure. The air finds any path through the walls, and the window is the weakest. Dust travels with the air, and a thin line of silt on the sill after a windy night marks exactly where the leak is.

Weatherstripping types

A bulb seal is a hollow rubber tube that compresses against the frame. A fin seal is a thin flexible blade, common on sliders. A pile seal uses fine fibers and is found in tracks. Each wears over time, and replacing a worn one is much cheaper than replacing the window.

Compression and fit

A casement presses its sash into the frame as it closes, which compresses the seal evenly on all sides. A double hung relies on seals at the meeting rail and along the jambs. The lock pulls the sashes together, so a loose lock lets dust through even when the seals are fine.

Frame joints and the wall

The gap between the frame and the wall is sealed with foam on the inside and sealant on the outside. If either is skipped or has cracked, dust enters around the frame, not through the sash. A smoke pencil run along the frame at the trim shows leaks the eye cannot see.

Cleaning and upkeep

Tracks are vacuumed and wiped every few months in the valley, since packed dust holds moisture and wears the seals. Seals are checked each spring and replaced when they are flattened or cracked. A new vinyl window with intact seals should hold back most of what the wind carries. After a big wind event, a damp cloth along the sill and the track picks up what did get in, and a pattern in where the dust lands points straight to the seal that needs attention. Gaskets and fin seals are sold by profile, so the old piece is taken out and matched in the shop before a new length is cut and pressed into the groove.