Swimming pool cracks are a common issue for many South African pool owners, particularly in older concrete swimming pools and gunite pools. Understanding what causes pool cracks is essential to prevent more serious structural damage, water loss, and expensive repairs. At Pools Reno, our Cape Town-based team uses advanced inspection tools—such as moisture meters and ground-penetrating radar—to detect, evaluate, and repair pool cracks with precision.
Main Causes of Swimming Pool Cracks
- Soil movement, shifting ground, or foundation instability causing stress on the pool shell
- Ageing or poor-quality construction materials in concrete or gunite pool structures
- Seasonal temperature changes leading to expansion and contraction of pool surfaces
- Low water levels exposing surfaces to UV rays, heat stress, and surface drying
Types of Pool Cracks
- Surface hairline cracks: Minor cosmetic cracks in the pool plaster that can be filled with epoxy or sealant.
- Structural cracks: Deeper fractures that can lead to pool leaks, water loss, or structural instability, often requiring professional swimming pool repair.
Pools Reno’s Expert Crack Repair Services
- Thorough inspection using radar and moisture detection tools
- Filling of minor cracks with high-quality epoxy injection systems
- Complete fibreglass relining to seal and strengthen cracked pool interiors
- Structural repair and resurfacing for severely cracked or leaking swimming pools
Our repairs are tailored to suit Cape Town’s climate and soil conditions.
Pool Crack Prevention Tips
- Regularly test and maintain proper pool water chemistry
- Fix leaks, cracks, and surface imperfections before they worsen
- Schedule yearly professional inspections to prevent long-term issues
- Monitor water levels to reduce surface stress and UV exposure
Frequently Asked Questions (FAQ) – Pool Crack Repairs in South Africa
Q: Can I repair pool cracks myself?
A: DIY repair kits can help with minor surface cracks, but we don’t recommend handling structural pool cracks without expert assessment. For long-term results, contact Pools Reno Cape Town.
Q: How do I tell if a crack is structural?
A: If the crack runs along the floor and walls or if your pool is losing water, it’s likely structural. Pools Reno’s leak detection service can verify the severity using professional tools.
Q: Is fibreglass relining the best option for crack repair?
A: Yes, especially for older gunite or concrete pools. Fibreglass pool relining seals cracks permanently, resists chemical erosion, and extends your pool’s lifespan.
Q: How long does it take to repair swimming pool cracks?
A: Depending on the type:
- Small repairs: 1–2 hours
- Moderate structural cracks: 1–2 days
- Full fibreglass lining: 3–5 days
We complete most repairs within 24–72 hours.
Q: What are the signs of serious pool crack damage?
A: Water loss, visible deep cracks, bulging surfaces, and recurring cracks after previous repairs are all red flags. Don’t wait—schedule an inspection with Pools Reno.
Q: How much does pool crack repair cost in South Africa?
A: Typical pricing:
- Hairline crack repair: R1,500 – R3,000
- Structural crack sealing: R4,000 – R9,000
- Full fibreglass relining: R15,000 – R45,000
Ask for a free quote to get an accurate price based on your pool’s size and condition.
Q: Do you offer a guarantee on crack repairs?
A: Yes. All crack repairs by Pools Reno include a service warranty. Our fibreglass relining jobs come with a 5-year workmanship guarantee under normal conditions.
Q: Are pool cracks dangerous?
A: Yes. Unattended swimming pool structural cracks can lead to water seepage, foundation erosion, and even collapse. Early repair is crucial for safety and savings.
