Family-owned · Charlotte Local
House Soft Washing That Preserves Your Siding
Soft washing removes algae, mildew, and grime without harming your siding or paint. Low-pressure. Biodegradable solutions. Call (919) 600-1277 for a free estimate.
Andrew — owner Answers the phone himself. 5.0 · 84 Google reviews
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Overview
Why choose us for House Soft Washing.
Soft washing your home's exterior is one of the most cost-effective ways to protect your siding, preserve your paint, and stop biological growth before it eats into the substrate underneath. The average homeowner spends somewhere between $300 and $900 or more depending on square footage, story count, surface material, and how long the algae and mildew have been allowed to colonize. Every job is different — contact Diamond Residential for an accurate estimate. Andrew's team uses a low-pressure delivery system paired with EPA-compliant, biodegradable cleaning solutions that sanitize the surface rather than just rinsing it. If you've been watching the black streaks creep across your siding and wondering whether it's worth addressing, it is. Call (919) 600-1277 before that growth gets into the paint layer.
Here's the process in plain terms: a surfactant-based solution is applied at low pressure, allowed to dwell on the surface long enough to break down algae, mold, mildew, and lichen at the root, and then rinsed clean. No high-pressure stream that forces water behind your clapboards or strips paint from trim. The chemistry does the work, not the pounds per square inch. What drives cost up is multi-story access, heavily soiled surfaces that need a second pass, and certain delicate sidings like wood shakes or EIFS that require a more cautious mix ratio. What keeps it reasonable is routine scheduling. Homes in humid climates that get soft washed every 12 to 24 months rarely develop the deep-set staining that turns a standard cleaning into a remediation job. For related exterior maintenance, many homeowners pair this service with gutter cleaning or window cleaning on the same visit. Every job is different — contact Diamond Residential for an accurate estimate.
house soft washing work — professional service in Charlotte, NC
Soft Washing vs. Pressure Washing: The Difference Matters
Pressure washing uses brute force. You're talking 2,000 to 4,000 PSI directed at your home's exterior, which works fine for concrete driveways and brick pavers. Aim that at vinyl siding, wood, stucco, or painted surfaces and you're forcing water into seams, lifting paint, and potentially voiding your siding warranty. Soft washing tops out around 100 to 500 PSI. That's gentle enough that you could hold the nozzle against your hand without injury. The cleaning power comes from the solution, not the stream. Gloeocapsa magma, the bacteria responsible for the black streaking on most homes, doesn't rinse off with water. It has to be chemically broken down. That's what a proper soft wash does. Read more about the difference between soft washing and pressure washing if you want the technical breakdown.
house soft washing work — professional service in Charlotte, NC
What the Cleaning Solution Actually Does
The solution Andrew's team applies is a diluted sodium hypochlorite blend with a surfactant that helps it cling to vertical surfaces long enough to work. The dwell time, typically 5 to 15 minutes depending on the severity of growth, is where the sanitizing happens. Algae cells rupture. Mildew spores are neutralized. Lichen, which actually roots into porous surfaces, gets lifted from below rather than scraped from above. After the dwell period, a low-pressure rinse clears the surface and the runoff. The solution is biodegradable and breaks down in soil quickly. Plants and landscaping around the home get a pre-rinse before application and a post-rinse after to minimize any contact with the cleaning agent. You won't see wilted shrubs or bleached mulch if the job is done correctly.
Four Signs Your Home Is Overdue for a Soft Wash
Fuzzy Growth in Shaded Areas
Dingy or Yellowed Paint That Isn't Fading
Visible Roof Runoff Staining
Our story
How Diamond Residential Runs a Soft Wash Job
Diamond Residential did an outstanding job on our rooftop terrace. They removed all of the pavers and the pedestal supports underneath, cleaned out years of debris that was preventing the roof from draining properly, and carefully put everything back in place. During the work, they also found a few roof issues we didn’t know about and repaired them before they became bigger problems. They even completed some drywall repairs, and everything turned out great. Communication was excellent from start to finish, and they were incredibly responsive and efficient. What I expected to be a stressful, complicated project ended up being one of the easiest home repairs we’ve dealt with. I wouldn’t hesitate to recommend Diamond Residential.
We’ve had a great experience working with Drew. He does quality work and makes the whole process seamless. Will be looking to reschedule later this year to keep our windows spotless and gutters clean!
Hired them to clean my gutters. I live in a heavily wooded area and get significant buildup. They didn’t outstanding job and thoroughly cleaned up around the house as well. Highly recommend
Diamond Residential did a great job. They were very responsive and did an efficient, high quality job.
I recently used this window washing company and was extremely impressed with their professionalism and attention to detail. The team arrived on time, worked efficiently, and left every window spotless inside and out. They were friendly, respectful of the property, and the final result made a huge difference in how bright and clean the home looked. I would absolutely recommend them to anyone looking for reliable and high-quality window cleaning services.
The guys from Diamond Residential did an outstanding job cleaning all the windows at my house. They were very professional and cleaned up before leaving. I would highly recommend this company.
Diamond Residential personnel are extremely knowledgeable and professional. The project was completed on time and at a very attractive price point. I highly recommend Diamond Residential.
Excellent service and excellent quality. I hardly recommend Diamond Residential Services.
Drew is amazing. After a harsh season of pollen, the screens were all yellow and needed much love. He also took care of the pine needles in my gutters. They did everything within a couple of hours and my house is sparkling. Cheers to crystal clear windows, and spotless gutters!
Drew did an amazing job installing gutter guards for me. He cleaned the gutters as well and left the property spotless! He answered quickly and was able to do the job fast without any issue.
Diamond Residential did a fantastic job cleaning our windows. They were on time, courteous, and the windows look great. Highly recommend!
Very prompt and courteous.. they did a great job
Schedule Your Soft Wash Today
Biological growth on your siding doesn't stop spreading on its own. The longer you wait, the deeper it roots and the more surface area it covers. Andrew's team is ready to assess your home and get it clean. Call (919) 600-1277 or request a free estimate online.
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(919) 600-1277Answers before you book
Frequently Asked Questions
What is the average cost to soft wash a house?
For most single-story homes, soft washing runs between $300 and $600. Two-story homes or those with heavy biological buildup can run $700 to $1,200 or more. What moves the number up is square footage, roof pitch and access for upper sections, the severity of algae or mildew staining, and whether the siding material requires a gentler, slower process. Every job is different — contact Diamond Residential for an accurate estimate.
Is soft washing a house worth it?
It is, and the math is straightforward. Algae and mildew aren't cosmetic problems at the surface level. Left alone, they degrade paint, introduce moisture into seams and caulk lines, and eventually compromise the substrate underneath. A soft wash every one to two years costs a fraction of what you'd pay to repaint or replace deteriorated siding. It also restores curb appeal without the risk of pressure washing damage.
What is the best way to soft wash a house?
The correct method is low-pressure application of a sodium hypochlorite and surfactant solution, a timed dwell period to break down biological growth at the cellular level, and a thorough low-pressure rinse. The surfactant keeps the solution on vertical surfaces long enough to work. DIY attempts with a garden hose and off-the-shelf cleaner don't achieve the same dwell time or concentration, which means the algae returns faster.
How often should you have your house soft washed?
Most homes in humid climates benefit from soft washing every 12 to 24 months. Homes with significant tree canopy, north-facing siding that stays shaded, or algae-generating roof material nearby may need it annually. Homes with minimal shading and good airflow can often go two years between washes. If you're noticing visible streaking or discoloration, don't wait for the calendar. Address it before it spreads.
Will the soft washing solution damage my landscaping or lawn?
A properly executed soft wash protects surrounding vegetation with a pre-rinse before application and a post-rinse after the dwell period. The sodium hypochlorite solution breaks down quickly in soil and, at the dilution ratios used for house washing, poses minimal risk when the surrounding area is adequately saturated with water beforehand. The team covers or relocates anything fragile near the work zone before starting.
Can soft washing damage vinyl or wood siding?
Soft washing, done correctly at low pressure, does not damage vinyl, wood, stucco, or EIFS. The risk of damage comes from high-pressure washing, not the cleaning solution. The one exception is soft washing with a solution that's too concentrated on already-weathered or unpainted wood, which is why a pre-job assessment matters. Andrew's team adjusts the mix ratio based on the surface before the solution goes on.
Does soft washing remove black streaks on siding permanently?
A professional soft wash removes existing Gloeocapsa magma and algae growth completely. It doesn't prevent future growth indefinitely. The surfactant solution leaves a residual that slows recolonization for several months, but in humid conditions, some biological activity will eventually return. Pairing soft washing with roof cleaning matters: if the roof above is still seeding algae into every rain, the siding will re-stain faster than it should.