Before the Rains: An LA & Orange County Home Exterior Checklist

Southern California gets most of its rain in a handful of concentrated winter storms. Because it's dry so much of the year, it's easy to forget the exterior entirely — until an atmospheric river arrives and finds every weak point at once. A small leak you'd have caught in October becomes ceiling damage in January. A little pre-season attention prevents most of it.

Here's a homeowner-friendly checklist to run before the first big storm.

Roof

• Look for cracked, slipped, or missing tiles/shingles and any exposed underlayment.
• Check flashing around chimneys, skylights, and vents — failed flashing is a leading leak source.
• On tile roofs, remember the tiles can outlast the underlayment beneath them; interior stains after rain often mean the underlayment, not the tile, has failed.
• Clear leaves and debris that trap water on the roof.

Gutters and drainage

Clogged gutters are the quiet villain of rainy season. Water that can't flow backs up under the roof edge and overflows against the foundation. Clean the gutters, confirm downspouts are attached and directing water away from the house, and make sure the grading around your home slopes away, not toward, the foundation. Standing water against the walls is exactly what you don't want.

Exterior paint and stucco

Your paint and stucco are the waterproof skin of the house. Walk the perimeter and look for peeling paint, bare spots, and open cracks in the stucco — each one is a place for water to get into the wall. Sealing these before the rains keeps moisture out of the structure. If large areas are failing, it may be time for a repaint, but even spot-sealing the worst spots helps in a pinch.

Windows and doors

Check the caulking and weatherstripping around windows and exterior doors. Gaps let in water and wind-driven rain. Re-caulking is cheap insurance. If you have older single-pane windows that fog or leak, the rainy season is a good reminder that they're due for an upgrade.

Patio covers and sunrooms

If you have a patio cover or sunroom, check that its roof, seams, and any glass panels are sealed and draining properly, and that water sheds away from the house rather than pooling at the connection point.

When to call a pro

Roof work and anything requiring a ladder above the first story is worth leaving to a professional — most rainy-season injuries are falls, not floods. If you find active leaks, widespread paint failure, or you're just not comfortable inspecting the roof yourself, get a set of trained eyes on it before the storms hit.

A1 Builders offers free, honest pre-season inspections across LA and Orange County. We'll tell you what genuinely needs attention before the rain — and what can wait. Reach out and we'll get you on the calendar.