Round Rock's exterior cleaning calendar is driven by cedar pollen season — not the generic seasonal advice that works everywhere else. Here's the right timing for every surface in Williamson County.
Last updated: June 2026
Most guides on pressure washing timing give generic advice — "spring is best" or "clean before winter." In Round Rock, TX, that advice misses the point entirely. The right time to pressure wash your home in Round Rock is specifically tied to mountain cedar pollen season, the live oak catkin calendar, and when your HOA schedules its exterior inspections. Get the timing wrong and you either clean too early (before deposits have finished accumulating) or too late (after mold has established itself in summer heat).
Round Rock's exterior cleaning season is shaped by a specific sequence of events that doesn't apply in most US markets:
April is the single best month for most Round Rock homeowners. Here's why April specifically beats any other month:
If April isn't available, late March or May are nearly equivalent. Avoid cleaning in February — cedar season is still active and you'll accumulate new deposits on clean surfaces within weeks.
April, after cedar season and catkin drop. House washing removes the full winter deposit cycle in one visit. Scheduling in summer is less effective because cleaning solutions evaporate faster in 100°F+ heat, reducing dwell time and cleaning effectiveness. Fall scheduling is acceptable but misses the HOA compliance window.
Spring (April–May) addresses cedar tannin oxidation before it permanently bonds into the concrete. Driveway cleaning is also appropriate after major construction phases in adjacent areas — caliche from Williamson County construction activity doesn't follow a seasonal pattern and deposits year-round near active development zones like those surrounding Siena and Chandler Creek.
Late spring (May–June) or fall (September–October). Roof soft washing in summer is effective but should be scheduled for early morning to prevent cleaning solution from drying too quickly in heat. Avoid winter scheduling — biocide effectiveness is reduced in cold temperatures below 50°F, which Round Rock experiences on winter mornings.
Twice a year for most Round Rock properties: once in April after catkin drop and once in November after cedar elm leaf fall. Properties in Brushy Creek, Forest Creek, and Cat Hollow with heavy multi-species canopy may need quarterly cleaning. Gutter cleaning is the most urgent service because Williamson County's expansive clay soils amplify foundation damage from overflow water events.
Spring (March–May) if you plan to stain or seal. Allow 48 hours of dry time after deck cleaning before applying stain — in spring, humidity and temperature are ideal for proper stain penetration. Avoid summer scheduling if staining, as Texas heat causes stain to dry before fully penetrating wood grain.
If you live in an HOA community in Round Rock — Teravista, Paloma Lake, Siena, Cat Hollow, Chandler Creek, or similar — exterior inspections typically run from April through June. This is when the contrast between cedar-pollen-coated siding and clean neighboring homes is most visible, and when HOA boards are most active in issuing notices.
Scheduling your annual cleaning in March or April ensures you're compliant before the inspection window opens. If you've already received a violation notice, most Round Rock pressure washing companies — including ours — can schedule within the same week to meet your compliance deadline.
Ready to schedule your Round Rock home's spring cleaning? Get a free estimate — we confirm your appointment within 2 hours and have availability throughout Round Rock, Teravista, Paloma Lake, Forest Creek, Brushy Creek, Cat Hollow, and Chandler Creek.
Related: Why Round Rock driveways stain: caliche and cedar tannins explained · HOA exterior standards in Round Rock communities
April and May availability fills fast in Round Rock. Call or request a free estimate now.