Brick Cleaning Challenges in Arizona
Brick is moderately common in Arizona — more prevalent in older Phoenix and East Valley construction (1960s–1980s) and some East Valley custom homes than in newer stucco-dominant communities. Arizona brick accumulates desert dust in the textured surface, hard water mineral scale from irrigation overspray, efflorescence (white salt deposits migrating through the brick face from moisture behind the wall), and biological growth on shaded north-facing brick surfaces.
Arizona's hard water accelerates mortar joint efflorescence more than in moderate-water markets. The mortar joint between bricks is typically softer and more porous than the brick face itself — water infiltration through joints deposits minerals on the brick face as it evaporates. This efflorescence pattern (white deposits tracing the mortar grid) is distinctive and requires specific treatment.
Correct Brick Cleaning Methods for Arizona
Moderate pressure (1,500–2,000 PSI) is appropriate for most Arizona brick — higher than stucco requires but lower than what is used for dense concrete. Vintage or historic brick (pre-1950 construction) may require lower pressure (800–1,200 PSI) — older brick was fired at lower temperatures and is more fragile. Never use zero-degree or turbo nozzles on any brick; always soft-fan or 15-degree nozzle at appropriate standoff distance.
For efflorescence on Arizona brick, dilute phosphoric acid (3–8% solution) applied to dry brick with appropriate dwell time, agitation, and complete rinse effectively dissolves the salt deposits. Follow with masonry sealer application after complete drying (48+ hours) — penetrating masonry sealer significantly reduces future efflorescence migration by limiting water infiltration through the brick face.