4 Sources of Leaks During a Rainstorm

4/25/2022 (Permalink)

If there are missing shingles on flat roof water can easily drip into the building envelope.

What Is The Source Of The Leak In Your Building's Roof?

You may have assumed your commercial building in Pflugerville, TX, was in good condition, only to come to work the day after a storm to find extensive rain damage: soggy paperwork, short-circuited computers, and a developing patch of black mold on one wall. Along with calling in professional water damage mitigation, you are obviously concerned with stopping this problem from happening again. What is the source of the leak in your building's roof?

1. Damaged Roofing
The problem may be an obvious one. If there are missing shingles or a visible break in a flat roof, water can easily drip into the building envelope. High winds or blowing debris can do significant damage in a major storm, making a hole leading to a big leak. However, if there is no clear damage, look elsewhere for the problem.

2. Gaps in the Flashing
Flashing refers to thin strips placed around structures on a roof to prevent leaks. Usually made of aluminum or galvanized steel, the flashing around chimneys, vents and skylights stop water on the roof from getting through. If the flashing is installed incorrectly or is damaged in a storm, rain damage can occur from water seeping through gaps or cracks.

3. Wind-Driven Rain
Even if the roof and its flashing are entirely intact, rain can still get through some kinds of roofing. High winds can drive rain sideways, causing it to collect under shingles or in improperly arranged vents and cause rot and leaks.

4. Other Water Sources
If you have had your roof inspected and there are no problems with the roofing or flashing but you are still finding puddles inside your building, it can be a good idea to look for another source besides a rainstorm outside. A cracked or leaking pipe in a wall or ceiling or an overflowing toilet can cause significant water damage regardless of how dry the weather is.

After experiencing rain damage, be sure to inspect your commercial building carefully and make the repairs necessary to prevent issues in the next storm.