Chimney Flashing Repair in Lewisville, TX

Flashing is the layered metal-and-sealant system that waterproofs the joint where the chimney penetrates the roof, the single most leak-prone point on the whole structure. It's common to fail because it relies on correct layering and counter-flashing let into the masonry; a single bead of roofing tar instead of proper step and counter-flashing is a temporary fix that fails within seasons. Most 'chimney leaks' originate here, not in the flue.

It takes diagnosis, because water travels before it shows. Flashing leaks typically appear as staining at the ceiling or wall right where the chimney meets the roof and worsen with wind-driven rain, while crown and masonry leaks tend to track down the flue or show as efflorescence on the brick. We trace the actual entry point rather than guessing, since sealing the wrong component leaves the real leak active.

Because counter-flashing is mechanical, not adhesive. Correct flashing tucks counter-flashing into a cut mortar joint in the chimney so water is physically directed over the step flashing and onto the roof, it doesn't depend on a sealant bond that dries, cracks, and lets water behind it. Roof cement smeared over the joint is the repair that looks done and leaks again within a couple of years.

Often not. Water entering at the flashing runs into the roof decking, the framing around the chimney, and down into the structure, rotting wood and feeding the same moisture damage that corrodes flue components from outside the masonry. That's why we treat flashing as part of keeping water out of the entire system, an unaddressed flashing leak quietly damages framing you can't see.

Yes — our crews cover Lewisville's 5 ZIP codes across Denton County, including Castle Hills, Vista Ridge, Old Town, plus the surrounding communities.

We offer same-week scheduling across Lewisville, booked by a real person in under two minutes, 7 AM to midnight every day.

Lewisville's housing stock spans 1980s-90s subdivisions through Vista Ridge's newer construction, which means our CSIA-certified inspectors encounter everything from aging clay-tile flue liners to prefab factory-built fireplaces nearing the end of their listed service life. Around Castle Hills and the Highland Village line, the dominant call is the NFPA 211 Level 2 inspection triggered at sale or after a chimney fire, where we scan for creosote glazing and liner cracks a flashlight check would miss. In Old Town's older brick homes, deteriorated mortar joints and spalling are the recurring safety findings we document against code. Chimney Flashing Repair is part of keeping that local housing stock safe, efficient, and up to code.