Specialty assessment and treatment of rust staining, calcium deposits, and hard-water conditions across San Antonio, Boerne, and the surrounding Hill Country — scoped per substrate and per source.
Specialty Cleaning Overview
Some visible conditions on hardscape and glass are not routine soil — they are staining or deposits from iron-bearing or mineral-heavy water. This page covers the assessment and, where appropriate, targeted treatment of those conditions. Routine driveway, patio, and walkway cleaning lives on the pressure cleaning page; lower-pressure work on softer materials lives on the soft washing page.
This service is offered for both homes and commercial properties across the residential and commercial hubs. No product, chemistry, brand, universal outcome, or guaranteed removal is claimed on this page — response depends on the substrate, the condition, and the source.
What Kind of Condition Is It?
Setting expectations starts with knowing what category a visible condition falls into. These categories cannot be diagnosed from text alone — an on-site look, and sometimes a small test area, is what tells us where a specific surface actually sits.
Orange to reddish staining on concrete, masonry, or stone caused by iron-bearing water reaching a surface through sprinklers or runoff. What is visible is a stain — how it responds depends on substrate, porosity, age of the staining, and the source.
White or grayish crusty buildup where mineral-heavy water evaporates on a surface — commonly seen on glass near irrigation, on pool-deck stone, and on masonry below downspouts.
Round or streaked spotting from mineral-heavy water drying on glass and other smooth surfaces. Some spotting is a surface deposit; older spotting may have progressed into the surface itself.
Whitish deposits that appear on masonry, brick, stucco, or concrete as moisture moves through the material and leaves minerals behind at the surface. Response depends on the substrate and the underlying moisture condition.
When mineral-laden water sits on glass long enough, spotting can progress into etching — a change in the glass surface itself. Etching is not a stain sitting on the glass; it is a change in the glass and is a separate assessment.
Pitting, spalling, or coating failure on stone or concrete is a change in the material or its coating, not a deposit that can be washed off. This is called out as its own category so expectations are set correctly.
Where We Commonly See These Conditions
Sprinkler rust staining and mineral deposits on concrete driveways, walkways, and aprons — evaluated per surface and per source.
Staining or deposits on masonry and stucco walls near irrigation heads, downspouts, or splash zones — subject to substrate condition and existing coatings.
Limestone, flagstone, and other natural stone surfaces are highly variable — some respond well to targeted treatment; others are sensitive to method and product selection.
Concrete pavers and clay-body pavers are considered case by case. Joint conditions, sand, and any prior sealer influence what is appropriate on a given patio or driveway.
Stone and concrete around pool decks often see mineral deposits from splash and evaporation. Adjacent water features, coping, and landscaping shape how the work is scoped.
Windows and glass panels affected by irrigation overspray or hard-water spotting are considered separately from routine window cleaning — see the note below on etching.
Related surface-specific scopes live on the house washing, window cleaning, and building cleaning pages. Commercial hardscape lives on the commercial pressure washing page.
Method Selection
On concrete, stone, glass, and coated surfaces, cranking up pressure often does not address the underlying deposit, and it can cause visible damage to the surface — etching, pitting, coating failure, or a permanent difference in appearance from adjacent areas. Specialty deposits typically respond to a combination of product selection, dwell, dilution, and controlled rinse rather than to pressure alone.
This is why rust and calcium work is scoped separately from routine hardscape cleaning. Where routine cleaning is what is actually needed, the pressure cleaning page is the right starting point.
Test-Area & Assessment
Because response depends on many factors, a small test area is often used before committing to full-scope work. The test area is the honest way to answer "how much of this will come out?" without guessing.
Concrete, brick, stucco, limestone, flagstone, pavers, and glass all respond differently to any treatment approach.
Prior sealer, paint, coating, or previous treatments influence what is appropriate and what could cause harm.
How long a staining condition has been present, and whether the source is ongoing, materially affects what a treatment can be expected to do.
Porous substrates absorb staining differently from dense or sealed surfaces. Deeply absorbed staining is a different assessment from a fresh surface deposit.
If the area has been treated before with an unknown product, that history is a factor. Prior chemistry can affect what a new approach will do.
Nearby metals, painted surfaces, glass, coatings, and landscaping are considered so they can be protected as part of the scope.
Where water travels during and after the work influences product selection, sequencing, and any protective steps needed for storm inlets, plants, and adjacent property.
Temperature, humidity, and expected rainfall all affect how any specialty approach performs on the day of the work.
Possible Limitations
Even where visible deposits are reduced, a shadow of the prior staining may remain on some substrates. This is common and is called out as a possible outcome, not a defect.
Where mineral deposits have progressed into etching — of glass or of the surface of natural stone — the change is in the material itself. Cleaning cannot reverse etching.
Existing coatings that are already failing may show that failure more clearly after cleaning. Prior coating condition is noted before scheduling where visible.
Cleaned areas can look different from surrounding untreated areas, especially on aged concrete or stone. Scope boundaries are discussed before the work.
Deeply absorbed staining in porous substrates may only partially respond, and older staining can behave differently than newer staining.
If the source of the staining or deposits is still active — a sprinkler head aimed at a wall, a leaky irrigation line, a downspout arrangement — the visible condition can return.
Cleaning vs Restoration vs Repair
Removal or reduction of visible surface deposits and staining where the substrate and condition support a treatment approach.
Bringing a surface toward a specific target appearance beyond simple cleaning — typically involves multiple steps and additional assessment; scoped separately.
Physical repair, patching, resurfacing, replacement, or coating installation is a different category. It is not part of a specialty cleaning scope and, where relevant, a homeowner is referred out.
Where sealing is being considered after a cleaning scope, that decision is discussed separately on the sealing page.
Source Control
Rust and mineral staining have a source. If that source is still active after the work, the visible condition can return. Correcting the source is a separate task — typically handled by an irrigation contractor, landscaper, or plumber — and Texas Pure Clean does not promise recurrence prevention through the cleaning scope alone.
Sprinkler heads aimed at concrete, masonry, or glass can reintroduce staining or spotting after treatment. Adjusting direction is a landscaping/irrigation task — outside this service.
Leaky heads or lines can concentrate mineral or iron-bearing water in one spot. Repair is outside this service and typically handled by an irrigation contractor.
Well water and municipal water can carry different minerals in different concentrations. What is in the water is a separate conversation from what is on the surface.
Where runoff travels can concentrate deposits in specific areas. Adjusting downspouts, splash blocks, or drainage is outside this service.
Because sources are outside this scope, no promise of preventing recurrence is made. Where source-control changes are recommended, the homeowner can pursue them separately.
Preparation & Property Considerations
Gates unlocked, vehicles moved as coordinated, and pets secured indoors for the duration of the work.
Beds, delicate plantings, and irrigation zones near the work area are noted so they can be protected or paused.
Painted metals, coated surfaces, and specialty features near the treatment area are called out for extra protection.
Access to a working outdoor spigot is confirmed in advance for rinsing and dilution as needed.
Nearby storm inlets, French drains, and drainage paths are considered so runoff can be managed appropriately.
Areas of concern, previously treated areas, and any known irrigation or drainage history are best shared in advance.
Careful Project Workflow
You share the property, the areas involved, and any timing preferences. Clear photos of the affected surfaces and where the water comes from speed up the response.
The affected surfaces are looked at in person where practical — substrate, condition, existing coatings, adjacent materials, and drainage are reviewed together.
Where appropriate, a small test area is used to see how the specific substrate responds before committing to full-scope work. Test-area outcomes are shared with the property owner.
A written scope describes what is planned, what limitations are expected, and how adjacent surfaces will be protected. Assumptions about condition and outcome are stated in writing.
Preparation notes are shared. Landscaping, pets, adjacent surfaces, and any irrigation-source concerns are coordinated before the work.
The crew performs the scoped work, protecting adjacent areas and adjusting on-site based on what the substrate is showing.
Before leaving, the crew walks the completed areas so anything worth pointing out — including any remaining shadowing or expected limitations — can be discussed while onsite.
Residential & Commercial Pathways
Homeowners typically start on the residential services hub. Property managers and business owners typically start on the commercial services hub, with hardscape specifically on the commercial pressure washing page.
The service focuses on San Antonio, Boerne, and the surrounding Hill Country. Recent project photos are on the gallery page and customer feedback is on the reviews page.
Frequently Asked Questions
No promise of complete removal is made sight unseen. Some staining reduces well; some leaves shadowing; some is progressed into the substrate as etching or surface damage and cannot be reversed by cleaning. What to reasonably expect is discussed as part of the assessment.
More pressure is not automatically the answer for specialty deposits. On concrete, stone, glass, and coated surfaces, higher pressure can cause damage without addressing the underlying deposit. Product selection, dwell, dilution, and rinse are usually more important than pressure alone.
Source control — adjusting sprinklers, fixing leaks, changing drainage — is outside this service and typically handled by an irrigation contractor or landscaper. Where the source is ongoing, staining and deposits can return, and no recurrence prevention is promised.
No. Routine hardscape cleaning is covered on the pressure cleaning page. Rust, calcium, and hard-water conditions are a different assessment and are scoped separately.
Yes, exterior glass affected by irrigation overspray or hard-water spotting can be assessed. Older spotting that has etched the glass is a change in the glass itself and cannot be reversed by cleaning. Routine window cleaning is on the window cleaning page.
Whitish deposits on masonry are looked at case by case. Response depends on the substrate, the underlying moisture condition, and the age of the deposit. Where an underlying moisture condition is suspected, it is called out — cleaning does not address the moisture path.
Sealing is a separate scope. If sealing is being considered after a specialty cleaning, see the sealing page — suitability, timing, and product selection are property-specific.
Call, use the form on this page, or reach out through the contact page. Clear photos of the affected surfaces, and any information about the water source or irrigation setup, help us respond quickly.
Share your property, the affected surfaces, and any information about the water source — we will follow up to review scope, expectations, and a written quote.
Call (210) 864-5454Real feedback from Texas Pure Clean customers.
“Excellent customer service and attention to detail. Professional and heavy duty equipment to get the job done. My driveway had alot of mold build up which was more challenging, but Texas Pure Clean got the job done! I HIGHLY recommend them! Honest and dependable. They also do window cleaning as well!”
“I have two large pecan trees that were infested with aphids do to the dry summer heat. Which formed a thick sticky greenish black film on everything, including my metal roof. Texas Pure clean did a wonderful job cleaning it off everything!! I highly recommend this company!!”
Tell us about the stain — rust, calcium, or hard-water — and where it's located. A Texas Pure Clean team member will reply with a fast, honest quote.
Prefer to talk? Call (210) 864-5454
