Chimney Flashing Repair in San Marcos, 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 San Marcos's 4 ZIP codes across Hays County, including Texas State / The Square, Blanco Vista, Kissing Tree, plus the surrounding communities.

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

San Marcos blends older housing near Texas State and The Square with new Kissing Tree and Blanco Vista construction in Hays County, and the older rental-heavy inventory drives much of our inspection demand. Tenant-occupied masonry fireplaces near campus often go years without service, so we lead with NFPA 211 Level 2 scoping for liner damage and creosote that deferred maintenance leaves behind. Willow Creek's established homes commonly present aging flues overdue for documentation. Chimney Flashing Repair is part of keeping that local housing stock safe, efficient, and up to code.