Commercial Window Washing

Most Class A buildings clean their windows every 6 to 12 months. Buildings near the freeways or in downtown areas should go every 6 months at a minimum, and if the budget allows, quarterly on at least the south-facing side, which takes the worst of the sun and grime. The bigger factor for many properties is the tenant. Exterior window cleaning is often a tenant responsibility, so a smart property manager encourages tenants to keep a window service going, because nothing protects a property’s image like clean glass. Vacant spaces are the one you control directly: clean those windows monthly so the unit always shows fresh and tour-ready. And keep an eye on sprinkler overspray hitting the glass, because hard landscape water is the fastest way to ruin a window and it will quietly push your cleaning needs up.

1. Yes, and it’s one of the most expensive mistakes a property can quietly make. Hard landscape water is loaded with minerals, and every time a misaligned sprinkler hits the glass it leaves deposits behind. Early on, those deposits can be removed with the right chemicals and effort. But left alone, the minerals bond to the surface and permanently etch the glass, and at that point there’s no cleaning it. The window has to be replaced. The fix is cheap and the damage is not. Audit the sprinklers along the building and make sure none are spraying the windows. Any sign of spotting means adjust the head immediately and clean the glass before it sets. If your landscaper can’t keep them in check, change the sprinkler type along the building entirely. Remember the math: a $10 sprinkler left out of adjustment can cause thousands of dollars in glass damage. 

There’s no flat per-window rate, but here are rough California ranges to set expectations. Storefront glass typically runs about $75 to $300 per visit depending on size. A two- to three-story office cleaned with a water-fed pole usually lands around $0.25 to $0.60 per square foot. High-rise buildings serviced from a suspended stage generally range from $0.50 to over $1.00 per square foot, depending on access, safety requirements, and complexity, though that’s specialized work outside our scope. RueVac focuses on properties we can clean from the ground with waterfed poles, up to four stories, which covers the large majority of commercial buildings in our area. Plenty of factors move pricing up or down: glass condition like hard water or oxidation, access challenges, frequency, parking and staging restrictions, and safety certifications. That’s why an honest quote always starts with a job walk and a detailed written estimate, not a number over the phone.

Absolutely, and it matters enough that we’ll be straight with you about our own scope. Working at height is genuinely dangerous, so any contractor on a multi-story building should carry general liability with appropriate limits, full workers’ compensation (the big one, since a fall is a serious claim), and commercial auto. Suspended-stage and rope-descent work adds another layer: crews trained to standards like SPRAT or the IWCA’s I-14, plus certified, inspected roof anchor points, which are the building owner’s responsibility. Here’s our honest position. RueVac focuses on properties we can clean safely from the ground with waterfed poles, up to four stories. We stepped away from high-rise stage and rope work because of what it does to a company’s insurance and risk, and we’d rather do our lane exceptionally well than stretch beyond it. For a true high-rise, hire a specialist built for that work and verify their coverage and certifications first.

It takes more than soap and water, because mineral deposits chemically bond to the glass and a normal wash won’t budge them. The right approach starts with gauging how far gone the glass is. Surface deposits, where minerals have built up on top of the glass, come off with a specialized hard water or scale remover that’s applied, given time to dwell, then agitated and rinsed. For heavier buildup, we step up to a cerium oxide polishing compound worked over the surface to lift the minerals mechanically. We test a small area first and protect the frames and seals, since these products are stronger than standard cleaners. The honest part: there’s a point of no return. If the minerals have etched into the glass rather than sitting on it, no chemical or polish brings it back and the only fix is replacement. That’s why catching sprinkler overspray early, before it sets, saves you from buying new glass entirely.

1. One advantage of Orange County is the mild climate, which lets you clean year-round, so it’s less about a single best month and more about working around the rain and the wind. The rainy season runs roughly December through March, and rain carries enough dust to spot glass quickly, so cleaning right before a storm is money wasted. The sweet spot for a big refresh is April through June, once the rains taper off, clearing the winter spotting and spring pollen and setting the property up sharp for summer. Watch the May and June marine layer, the “May Gray, June Gloom” that leaves film on coastal glass. Santa Ana wind season runs roughly October through December, blowing dust onto windows fast, so many properties schedule a cleaning once those events settle. For most properties the real answer is a consistent schedule, with one clean timed for late spring, another after the Santa Anas, and a refresh ahead of any busy leasing season. 

It depends on the service and what’s spelled out in the scope, which is exactly why you should ask up front. A standard window cleaning typically covers the glass itself. Screens, frames, sills, and tracks are often handled as add-ons because each one adds labor. Wiping down frames and sills is usually a quick add, but cleaning out the tracks is more involved, and screens take real time to remove, clean, and reinstall without damaging them. None of it is difficult, it’s just a question of whether it’s in the scope you’re paying for. The mistake we see is a property manager assuming everything is included, then being surprised the tracks are still full of grit. The fix is simple: have the contractor itemize exactly what the price covers, glass only or the full package, so there are no surprises on the invoice.

1. The smoothest approach is a recurring program on a fixed schedule, so it runs without the property manager having to reorganize it every time. For exterior glass, especially the ground-level storefronts we reach with waterfed poles, we can run the whole center on a set route with no tenant coordination needed. Interior glass requires access to each suite, so those visits get scheduled ahead with tenant notice. Timing matters at a retail center: we work before opening, after closing, or during slow hours so we’re never cleaning around shoppers. The strategic piece many managers miss is consistency. When each tenant arranges their own cleaning, storefronts end up on different schedules and the center looks uneven. Organizing one center-wide program on a single cadence keeps every storefront matching and the property looking sharp, and keeping vacant units cleaned monthly means the center always shows well for customers and prospective tenants.