How Does Heavy Rain Get Inside a House During Storms?

Roofing materials can fail under heavy rain, especially if shingles are old or damaged. Wind-driven rain can lift shingles and force water underneath the underlayment. This water then travels along roof decking, potentially dripping into your attic. Missing or cracked flashing around chimneys, vents, and skylights creates direct entry points for water into your home's interior.

Siding acts as a shield, but its seams and corners are weak points. Wind can push rain sideways, exploiting small gaps between siding panels or where siding meets trim. Over time, caulking and sealants around windows and doors within the siding can dry out and crack. This deterioration allows water to seep behind the wall, leading to hidden structural damage and mold.

The foundation is your home's final barrier against ground water. Cracks in poured concrete or mortar between cinder blocks are common entry points. When the soil around your foundation becomes super-saturated from heavy rain, hydrostatic pressure builds. This pressure can push water through these tiny cracks, resulting in damp walls or puddles on the basement floor.

Basement window wells are another frequent culprit. If a window well fills with water because its drain is clogged or absent, the water level can rise above the window's seal. Water then leaks into the basement around the window frame. Similarly, the joint where the basement wall meets the floor slab is a vulnerable seam that can leak under pressure.

If you discover water inside after a storm, your first step is safety. Turn off electricity to the affected area if it is safe to do so. Then, remove as much standing water as you can with a wet-dry vacuum or mops. Move furniture and rugs to a dry area to prevent further damage and to allow air circulation.

Contact the pros for a thorough inspection. They use tools like moisture meters and infrared cameras to find hidden water you cannot see. Prompt drying is critical to prevent mold growth and structural rot. Water can wick up drywall and into subfloors, so professional structural drying is often necessary to protect your home's integrity.

• Ensure personal safety first; avoid electrical hazards in wet areas.
• Remove standing water and move belongings to dry ground.
• Increase ventilation with fans, but know they are not enough for deep drying.
• The pros can perform detailed moisture mapping.
• They have industrial-grade dehumidifiers to dry structural materials properly.
• Document the damage with photos for a potential insurance claim.