Brick Waterproofing

This service is about the brick itself — its condition, its porosity, and what the faces are already telling you. Not all chimney brick is the same: a hard, dense, low-absorption face takes a different repellent at a different application rate than a soft, porous, or already-spalling one, and thin brick veneer behaves differently again. Texas Service Experts treats brick waterproofing as a diagnostic, condition-driven job: we read the faces first — testing absorption, identifying the brick type, flagging which courses are spalling or efflorescing — and then choose the siloxane or silane repellent and the coverage rate that fit that specific masonry. How this differs from our chimney-waterproofing service: that page is the whole-stack program that wraps the entire chimney as a unit and checks the crown and flashing; this one focuses tightly on the condition and product-fit of the brick faces and veneer themselves.

Spalling and efflorescing faces are the symptoms that bring most homeowners here, and each calls for a different response before any repellent goes on. Spalling — where the brick face flakes, pops, or sheds its outer skin — means water has already gotten in and frozen, so those faces get addressed first: a breathable repellent over crumbling brick just seals the damage in. Efflorescence, the white crystalline bloom on the face, is dissolved salt left behind as water evaporates out of the brick — evidence of an active moisture path, not a stain to paint over. We clean the bloom, confirm the face is dry, and only then select a repellent, because sealing over salt-laden or actively-wet brick traps the salts and water inside and the bloom just returns.

Product selection is the heart of this job, and it's where condition matters most. A vapor-permeable siloxane or silane is the only correct chemistry for chimney brick — film-forming paints and glossy "waterproofers" trap moisture and spall the face from behind — but within the breathable family the choice is condition-specific: molecular size, solids content, and application rate all get matched to how porous and how sound the brick is, and a softer or more absorbent face takes a heavier, deeper-penetrating coat. We repair before we seal at the face level: spalled brick is cut and replaced and crumbling joint mortar is pointed, so the repellent lands on sound, bondable masonry rather than on a face that's already failing.

Applied to brick that's been read, repaired, and matched to the right product, a breathable repellent stops the absorption that drives the freeze-thaw spalling in the first place — slowing the very deterioration the bare faces were already showing. We're honest about the order: if a face is actively spalling or a joint is open, that face is repaired before any sealer touches it, because waterproofing a deteriorating brick face is money spent locking the failure in. And because the same crew handles the brick repair, the sealing, and the cap and crown above, the whole water defense gets read and treated as one job in one visit — the practical version of looking after the entire chimney rather than one face of it.