How Do You Know You Have a Roof Leak?

The only way to completely repair a roof leak on your property in Lomita is to locate its source. You can use the same method that a professional roofer in Lomita, like Deandre Roofing, takes steps to determine the source of roof leaks. Then you’ll have a better understanding of how to initiate and execute the said repairs. Professionals examine a variety of things to determine where a leak is coming from, beginning with evidences extracted within the home.

Discovering the Nature of Leaks

Stains, fissures, and mold on the walls and ceilings can provide vital insights into the nature of a leak. These indications can reveal information such as the size of the entrance, the leakage periods, and whether or not the leak is ongoing. Homeowners in Lomito can learn all these factors and more by virtually observing the evidence inside the house, asking relevant questions, and understanding how to analyze the acquired data.

If the prominent leak is dripping from the roof, expect stains on the ceiling. Water stains comprise a yellowish or light brownish appearance. It usually contains a darker edge line defining the perimeter. The longer the stain is exposed to water, the darker it will generally appear.

A notable leak (within the last 24-48 hours) will be cool or moist to the touch and not breakable. If the stained area is tough or fragile, with cracks, it indicates that it was wet for a long time and has since dehydrated. It might be an old leak that may not be active.

Mold can grow on the surface of a wall or ceiling. You can remove it with a mold-killing chemical. However, the presence of mold is probably a sign of sustained exposure to water. Subsequently, the damage inflicted may necessitate the replacement of the ceiling or wall covering in this location.


The following is a summary of the properties of the substance frequently used for wall and ceiling construction. “Drywall,” as it is commonly known, withstands a restricted amount of water exposure with no long-term effects on its properties.

For over five decades, homeowners and commercial establishments used it as an affordable substitute for traditional plaster in installing interior walls and ceilings. A gypsum (calcium sulfate dehydrate) core similar to crushed stone is suppressed between two sheets of paper facing the substance to form drywall. After a roof leak has dried out, the roofing specialist usually seals the surface using paints without harming the building structure.

When drywall gets exposed to a substantial amount of water over time, it may keep losing its flat contour and start to sag from the ceiling. When dried under these conditions, it will not restore its original properties. You should replace it only after the leak has been fixed!

Water flows to the lowest point before reaching or leaking to the ceiling surface. As a result, evidence of a roof leak may show up above ceiling fans, light fixtures, or in the joints of independent drywall board segments. Reinforcement tape and joint sealing chemicals are used by technicians to seal the joints between boards. The tape may begin to reflect when water penetrates these sensitive zones.

If your Lomita home ceiling is not even similar to the case with cathedral or vaulted, it may be difficult to determine where the roof leak originates. Remember that drywall comes in four-foot-wide, eight- to twelve-foot-long sections. If there is a notable stain in one of these joints, the roofer should examine the ceiling every four feet above the entry point. The target should be to look for evidence at the highest possible point.

The precise location of the leakage on an interior wall or ceiling also gives revealing clues of the presence of the leak’s origin. The leak could be coming from an existing roof penetration like a plumbing vent stack, attic vent, skylight, chimney flashing area, or perhaps a plumbing supply or sewerage line.


You are now equipped with information that professionals like Deandre Roofing Company in Lomita utilize to assess the nature and origin of home roof leaks. Water stains indicate whether the source of a leak is large or small, active or inactive, and what possible roof damages are in store for you!