Roof Dryer Vent Cleaning in La Mesa, CA

Why does a roof-terminated dryer vent clog faster than a wall vent?

Gravity. Lint rides the airflow up, then drops back when the dryer shuts off. A vertical run collects that fallback at every elbow and at the base. Short garage-wall runs in postwar ranches never do this. The second-floor-to-roof runs in 1980s–2000s two-story tract and townhome stock do it every cycle.

The cap itself is the other half. Many roof caps carry a screen or fixed louvers. Lint mats against the screen, then wind-driven dust and local pollen (jacaranda, eucalyptus, oak) bind it into felt. Birds and wasps nest in those hoods through the long dry season. None of that clears from inside the laundry closet.

So the cleaning runs both directions. Brush runs up the line from the appliance end. Vacuum captures at that end. The cap gets pulled and cleared on its own. Tile and older composition roofs change the approach. Some caps are reachable. Some are not worth stepping on.

Check it yourself first. Run the dryer and watch the cap from the ground. Dead louvers, or a pl