Is your fibreglass pool showing signs of damage like cracks, blisters, or mould beneath the surface? At Pools Reno, we specialise in professional fibreglass pool shell repairs in Cape Town, including Durbanville, Hout Bay, and Somerset West. Our expert team restores pool shells by treating blistering, repairing surface cracks, and removing hidden fungal contamination—ensuring your pool stays strong, safe, and visually stunning for years to come.
Common Problems with Fibreglass Pool Shells
1. Osmotic Blistering
Osmotic blisters occur when water seeps through the gelcoat and reacts with trapped contaminants or unreacted chemicals in the fibreglass. This leads to acidic buildup, delamination, and visible surface bubbles.
Solution:
- Grind and remove affected gelcoat
- Dry and neutralise the exposed area
- Apply multi-layer fibreglass resin patch
- Finish with chemical-resistant topcoat
Learn more about fibreglass pool blister repair
2. Cracks and Delamination
Spider cracks, hairline fractures, and surface lifting are signs of structural stress or ground movement. These not only damage aesthetics but also lead to water loss.
Solution:
- Structural crack sealing
- Reinforced fibreglass patching
- Full resurfacing if damage is extensive
3. Fungal Growth Beneath Gelcoat
Organic contamination or poor factory finishes can result in black or green fungal stains beneath the surface.
Solution:
- Remove infected gelcoat layers
- Apply fungicidal treatment
- Resurface using new fibreglass topcoats
Check out our green pool treatment services
Service Areas
We proudly offer mobile and in-ground pool shell repairs in:
- Durbanville
- Hout Bay
- Somerset West
- Bellville
- Constantia
- Stellenbosch
- Southern Suburbs
Why Choose Pools Reno for Fibreglass Pool Repairs?
- 10+ years of fibreglass relining expertise
- Locally owned and Cape Town-based
- Fast turnaround (2–5 days for most repairs)
- Anti-fungal, chemical-resistant materials
- Affordable, transparent pricing
FAQs – Fibreglass Pool Shell Repairs
What causes fibreglass pool shell blisters?
Blisters are caused by osmotic pressure, where water passes through microscopic pores in the gelcoat and reacts with internal resins or contaminants. This chemical reaction creates acidic pockets that swell into visible bubbles or soft spots on the pool surface.
Are fibreglass pool cracks serious?
Yes. Even hairline cracks can worsen over time, especially if they allow water to seep into the fibreglass layers. Left untreated, they can lead to structural damage, increased water loss, and algae growth.
Can fibreglass shell damage be repaired without draining the pool?
No. For proper repairs, we need to drain and dry the pool completely. Moisture interferes with bonding and can cause new layers to peel or fail prematurely.
How long does fibreglass shell repair take?
Most repairs take between 2 to 5 days, depending on the extent of the damage. Blister and crack repairs are typically faster than full resurfacing jobs.
Will the repaired area match the rest of my pool?
Yes, we colour-match the topcoat layer as closely as possible. However, if your original gelcoat has faded over the years, slight differences may be visible. For a uniform finish, we recommend full resurfacing.
What are the signs I need pool shell repairs?
Watch for:
- Bubbles or soft spots on the pool walls or floor
- Visible cracks or spider fractures
- Water loss not caused by evaporation
- Discolouration or black/green stains under the gelcoat
- Areas that feel rough or spongy underfoot
Is it safe to swim in a pool with fibreglass damage?
It depends. Small surface cracks may not pose immediate danger, but blisters, delamination, and fungal growth can lead to injury or health concerns. If unsure, book a free site inspection.
How long do repairs last?
When done professionally using high-quality resins and gelcoats, fibreglass shell repairs can last 10 years or more. We use UV- and chemical-resistant materials to ensure durability in Cape Town’s climate.
Can fungal growth return after treatment?
Not if properly treated. We strip the affected gelcoat, apply an industrial-grade fungicide, and reseal with a fresh fibreglass layer to prevent recurrence. Regular maintenance helps prevent future problems.
Do you offer a guarantee on your repairs?
Yes. All fibreglass shell repairs come with a limited workmanship guarantee, and we’re happy to discuss details based on the repair type during your free quote.
Other Pool Services We Offer
In addition to expert fibreglass pool shell repairs, Pools Reno proudly provides a wide range of professional swimming pool services in Durbanville, Hout Bay, Somerset West, and surrounding Cape Town areas to keep your pool in top condition:
- Pool Cleaning & Maintenance – Regular cleaning, chemical balancing, and filter servicing
- Fibreglass Pool Relining – Full fibreglass resurfacing and upgrades for aging pools
- Pool Leak Detection & Repairs – Advanced leak locating and fast repairs to prevent water loss
- Pool Renovations & Upgrades – Tile replacement, coping, steps, and feature installations
- Chlorinator & Salt System Installation & Repairs – Improve water sanitation with salt chlorination
- Pool Pump & Filter Repairs – Fixes and replacements for pumps, sand filters, and cartridge filters
- Pool Automation Systems – Automated pool cleaning, lighting, and chemical dosing systems
- Green Pool Cleaning & Restoration – Remove algae, fungal growth, and chemical imbalances
- Pool Safety Fencing & Covers – Compliant fencing and safety covers to protect your family
Explore all our pool services here
Call to Action – Book Your Pool Repair Today
Don’t wait for surface damage to worsen. Whether you’re dealing with unsightly blisters, dangerous cracks, or hidden mould, Pools Reno is your trusted local expert.
Call us now for a free site inspection and quote
Contact Pools Reno
Resurfacing | Blister Repair | Fungal Treatment | Leak Detection | Full Renovations
