Pressure Washing in Pearland, TX
The most common exterior cleaning call in Pearland is not algae, it is rust — orange fan-shaped staining spreading out from the sprinkler heads. Here is what causes it, what actually removes it, and how to stop paying to clean it every year.
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The orange stains are almost certainly your sprinklers
The most common exterior cleaning call in Pearland is not algae. It is rust — orange fan-shaped staining across concrete, a rust line up the bottom of a brick wall, streaks radiating out from a sprinkler head across a driveway.
That is iron in the irrigation water. Groundwater across this part of Brazoria County carries dissolved iron, and every time the sprinklers run, a fine spray of it lands on concrete and brick and oxidises in the sun. It builds slowly enough that most people do not notice until it is well established.
Rust does not come off with pressure, and trying harder just etches the concrete. It needs a rust remover made for masonry, applied and dwelled and rinsed. If someone quotes you for a rust stain without mentioning a product, they are going to spend an hour making it slightly lighter.
And it will come back unless you change something
This is the part most cleaning companies skip, because it involves telling you the job is not the whole answer. Clean the driveway and leave the sprinkler pattern unchanged and the stain returns on the same schedule it arrived.
- Adjust the heads so the spray stops hitting concrete and brick. Usually the cheapest fix and often enough on its own.
- Change the run times so watering finishes before the sun is on the surface. Iron oxidises faster in heat.
- Consider a filter on the irrigation line if the iron content is high. Worth pricing if you are cleaning the same stains every year.
Clay soil, and what it does to flatwork
Pearland sits on Gulf Coast prairie clay, which swells when wet and shrinks when dry. Over years that movement opens hairline cracks in driveways and patios and lifts slabs slightly out of level. It matters for cleaning in one practical way: water pools where a slab has settled, and standing water grows the algae that makes one section of a patio slicker and darker than the rest. If a particular spot keeps going green, the cause is drainage rather than cleaning frequency.
What to ask before you book
- What are you using on the rust? There should be a specific product named, not just a pressure setting.
- Will it take the stain out completely? On heavily oxidised concrete, honest answer is usually a large improvement rather than perfection.
- Soft wash on the house? Yes, always.
- Is the rust treatment extra? It usually is. Better to know before than after.
We also cover Cypress Spring Katy Conroe.