Owning a swimming pool is a luxury, but like any structure, pools eventually show signs of wear and tear. One of the most common and frustrating issues homeowners face is pool leaks. Left unchecked, leaks can waste thousands of gallons of water each year, drive up utility bills, and even damage surrounding landscaping. A common question pool owners ask is: Can pool replastering fix leaks? The short answer is—sometimes. Let’s dive deeper into what replastering can and cannot do when it comes to repairing leaks.
What Is Pool Replastering?
Pool replastering is the process of resurfacing the inside of your pool with a fresh coat of plaster, which is usually a mix of cement, sand, and water. Over time, the original plaster deteriorates due to constant water exposure, chemical imbalances, and natural wear. Most experts recommend replastering every 7–10 years depending on usage and maintenance.
When done correctly, replastering not only refreshes the pool’s appearance but also creates a smoother, watertight surface that helps prevent water from seeping out.
Can Replastering Fix Leaks?
The ability of pool replastering to fix leaks depends on the source of the leak:
- Surface-Level Cracks
If leaks are caused by hairline cracks or worn-out plaster, then replastering can absolutely solve the problem. A fresh coat of plaster seals over minor cracks and creates a continuous, watertight barrier. - Structural Damage
If the leak is due to deeper structural issues—such as cracks in the pool shell, broken plumbing lines, or faulty fittings—replastering alone won’t solve it. In these cases, more extensive repairs are required before or during the replastering process. - Porous or Old Plaster
Older plaster can become porous over time, allowing water to slowly seep through. Replastering will correct this by applying a new, dense surface that restores water retention.
In short, replastering is effective for surface-related leaks but not for structural or plumbing issues.
Signs That Your Pool Needs Replastering
Recognizing the signs early can help you determine whether replastering is the right solution. Some common red flags include:
- Persistent Water Loss: If you’re refilling your pool more than 2 inches per week, there may be a leak.
- Rough or Pitted Surfaces: Worn plaster becomes rough, making it uncomfortable to walk on and more likely to crack.
- Visible Cracks or Stains: Discoloration and cracking indicate the plaster is nearing the end of its lifespan.
- Increased Chemical Use: Leaks dilute pool chemicals, causing imbalances that require more frequent adjustments.
According to pool maintenance reports, about 1 in 5 pool leaks are directly related to deteriorating plaster. That means replastering can be a cost-effective fix in many cases.
The Process of Pool Replastering
Replastering is more than just applying a new layer. Here’s what typically happens:
- Drain the Pool – The water is removed, and the surface is cleaned.
- Chip Away Old Plaster – Damaged or loose plaster is removed to prepare for bonding.
- Repair Cracks – Any visible surface cracks are patched before new plaster is applied.
- Apply Bond Coat and New Plaster – A bonding agent ensures proper adhesion, followed by one or more layers of fresh plaster.
- Refill and Cure – The pool is refilled, and the new plaster is allowed to cure with balanced water chemistry.
This process usually takes about 7–10 days from start to finish, depending on pool size and condition.
How to Tell If Replastering Will Solve Your Leak
Before committing to pool replastering, it’s important to have a professional leak detection test. Specialists use pressure testing, dye tests, and electronic listening equipment to identify the exact source of the leak.
If the leak is plaster-related, then replastering is a great investment. However, if the problem lies in underground plumbing, skimmers, or the pool shell itself, those issues must be resolved first.
Costs and Long-Term Value
The cost of pool replastering varies depending on size and finish, but most homeowners spend between $4,000 and $7,000. While this may seem like a hefty expense, it’s significantly cheaper than ignoring leaks.
For perspective:
- A leak of just one-eighth of an inch per day in a standard pool can waste over 10,000 gallons of water per year.
- At today’s average water rates, that could add hundreds of dollars to your utility bill annually.
When compared, replastering not only restores your pool’s beauty but also prevents costly water loss.
Preventing Future Leaks After Replastering
Replastering can fix plaster-related leaks, but maintaining the new surface is essential to prevent future problems. Here are some tips:
- Maintain Proper Water Chemistry – Imbalanced chemicals can erode plaster quickly.
- Brush and Clean Regularly – Prevent algae and stains that compromise plaster integrity.
- Schedule Annual Inspections – Early detection of cracks or leaks saves money in the long run.
- Avoid Draining Too Often – Frequent draining exposes plaster to air, causing shrinkage and cracks.
With proper care, a replastered pool surface can last up to 15 years.
Final Thoughts
So, can pool replastering fix leaks? The answer is yes—if the leaks are caused by worn or cracked plaster. For deeper structural or plumbing issues, replastering alone won’t be enough. That’s why professional inspection is key before starting the process.
Investing in pool replastering not only resolves surface-level leaks but also enhances your pool’s appearance, comfort, and efficiency. By addressing plaster issues promptly, you can enjoy a watertight, beautiful pool for years to come.
