Written by Pools Reno Experts | July 25, 2025
What Is Pool Plaster Dust and Why Should You Care?
If you’ve recently had your pool plastered, you might notice a cloudy, chalky dust floating in the water — this is known as pool plaster dust. It’s a natural byproduct of the plaster curing process, where fine particles shed from the pool’s new surface.
While pool plaster dust is common, it can cause cloudy water and temporary aesthetic concerns if not properly managed. Understanding how to treat and prevent plaster dust is crucial to keeping your swimming pool crystal clear and your plaster surface healthy.
At Pools Reno, we’ve seen countless clients in Cape Town and the Western Cape face this issue. With the right approach and professional guidance, plaster dust problems can be minimised and handled efficiently.
Why Does Pool Plaster Dust Appear?
- Calcium particle shedding: The main cause is the release of loose calcium particles from freshly applied plaster.
- Imbalanced water chemistry: Incorrect pH and alkalinity levels during plaster curing accelerate dust formation.
- Poor plastering techniques: Inexperienced plasterers or improper mixing increase dust likelihood.
- Environmental conditions: The Western Cape’s climate—especially heat and humidity—can impact plaster curing and increase dust shedding.
- Filter system inefficiency: Inadequate filtration during curing leads to suspended dust particles lingering longer.
How to Effectively Treat Pool Plaster Dust
1. Regular Brushing Is Key
Brush your pool walls, floors, and steps at least twice a week during the plaster curing phase (usually the first two weeks after plastering). Use a soft nylon brush to gently remove plaster dust without damaging the surface.
Pro tip: Brush in one consistent direction, starting from the shallow end moving toward the deep end and always brushing toward your pool’s filtration system. This helps debris move efficiently into the filter.
Consistent brushing is one of the most effective ways to prevent plaster dust buildup and promote proper curing of your plaster surface.
2. Keep Your Pool Filters Clean
Your filtration system works overtime during this stage. Regularly check and clean your pool filters and skimmers to prevent clogging and ensure clear water circulation. We recommend avoiding automatic pool cleaners during the first 2-3 weeks as they can stir up dust unnecessarily.
At Pools Reno, our professional pool maintenance includes thorough filter cleaning and system checks to keep your pool water sparkling and free of plaster dust.
3. Be Patient – The Dust Will Clear
With consistent brushing and filtration, plaster dust will typically clear up in about two weeks. You’ll know your pool is ready when the water becomes clear and dust no longer swirls when stirred.
If dust persists beyond this period, it could indicate water chemistry imbalances or other underlying plaster issues, and a professional pool inspection may be needed.
How to Prevent Pool Plaster Dust in the First Place
Expert Plastering Practices
Quality plaster application is the foundation of dust prevention. Our professional plastering team at Pools Reno strictly adheres to best practices such as:
- Using a low water-to-cement ratio to produce denser plaster.
- Avoiding calcium chloride additives that promote dust.
- Prompt and skillful trowelling and finishing to ensure a smooth surface.
- Scheduling plastering during optimal temperature ranges to avoid curing problems.
- Applying plaster only by experienced technicians with proven track records in the Western Cape.
Choosing a reputable company like Pools Reno for your pool plastering ensures the highest standards and minimises the risk of plaster dust.
Maintain Balanced Water Chemistry
During the curing phase, maintaining optimal pool water chemistry is vital to reduce plaster dust and protect your pool surface:
- Keep pH levels between 7.4 and 7.6.
- Maintain total alkalinity around 70 ppm.
- Adjust alkalinity with baking soda if too low, or muriatic acid if too high (pre-diluted before adding).
- Regularly test chemical levels, especially in the first few weeks.
- Avoid shocking the pool or adding harsh chemicals during plaster curing.
Our professional pool servicing team offers regular chemical testing and balancing as part of our comprehensive pool maintenance plans tailored for pools in Cape Town and surrounding suburbs.
Tools & Tips for Proper Brushing
- Use a soft nylon brush, ideally 18 inches wide, to cover more area without scratching plaster.
- Avoid stainless steel brushes, which can damage the plaster finish.
- Brush all surfaces, including walls, floors, steps, and platforms.
- Use long, steady strokes for thorough cleaning.
- Brush consistently and methodically to promote even curing and prevent dust buildup.
Pool Plaster Dust Treatment – Why Choose Pools Reno?
At Pools Reno, we specialise in professional pool plastering, repair, and maintenance throughout Cape Town and the entire Western Cape. Our expert team helps you prevent and treat plaster dust effectively while ensuring your pool surface stays smooth, durable, and beautiful.
We offer:
- Expert pool plastering and replastering services
- Comprehensive pool maintenance plans including plaster dust management
- Water testing and chemical balancing
- Skilled pool surface cleaning and brushing
- Timely plaster defect repairs before they worsen
- Full pool service for residential and commercial clients
Our Full Range of Swimming Pool Services in Cape Town & Western Cape
Whether you’re dealing with plaster dust, pool surface damage, or general maintenance, Pools Reno offers comprehensive pool services:
- Pool Plastering & Replastering — High-quality marbelite, polished plaster, and traditional plaster finishes
- Fibreglass Pool Resurfacing & Repairs — Seamless repairs to fibreglass shells
- Marbelite Pool Finishes — Durable, beautiful finishes for lasting appeal
- Pool Acid Washing & Deep Chemical Cleaning — Remove stains, scale, and buildup
- Leak Detection & Crack Repairs — Keep your pool watertight
- Pump, Filter & Chlorinator Installation and Servicing — Ensure efficient water circulation and sanitation
- Pool Tile & Coping Repairs — Restore your pool’s perimeter
- Pool Cleaning & Maintenance Plans — Customized for your pool size and needs
- Underwater Pool Repairs & Putty Application — Fast fixes without draining your pool
- Plunge Pool Installation & Renovations — Modern designs and upgrades
- Pool Equipment Replacement & Upgrades — Improve energy efficiency and performance
When Should You Contact Pools Reno?
If you’re experiencing persistent plaster dust issues or cloudiness after several weeks, or if your pool surface shows signs of damage or roughness, don’t hesitate to call the trusted team at Pools Reno.
We provide expert pool inspection, cleaning, and repair services to bring your pool back to pristine condition quickly and affordably.
Bottom Line
Proper plaster dust treatment and prevention start with consistent brushing, balanced pool water chemistry, and expert plaster application. Following these tips will ensure your newly plastered pool water clears up fast and your plaster surface remains strong for years.
For the best pool plastering and maintenance services in Cape Town and the Western Cape, trust Pools Reno. Contact us today for professional advice, free quotes, and expert pool care.
Contact Pools Reno Today for Expert Pool Care Across the Western Cape
Keep your pool in top condition with the trusted pool specialists in Cape Town, Bellville, Durbanville, Somerset West, Stellenbosch, and beyond.
📞 Call us now or request a free quote online — let’s make your pool sparkle!
