Cemcrete Under Water Pool Patch – Fast-Setting Marble Plaster Repair

Fix leaks and small holes without draining your pool.

Cemcrete Under Water Pool Patch is a quick-setting repair compound made from white cement and white marble, specially formulated to be applied underwater without disintegrating. Once set, it becomes rock hard delivering a durable, watertight repair for concrete and marble plaster swimming pools.

Designed for both underwater and dry surface applications, this patching compound is ideal for fast, effective pool maintenance.

What Makes It Different?

Unlike standard cement products, Cemcrete Pool Patching is engineered to:

• Be taken underwater without washing away
• Set rapidly (approximately 5 minutes)
• Harden to a strong, rock-solid finish
• Blend well with marble plaster pool surfaces

This makes it the preferred solution for emergency pool leak repairs and small surface damage.

Key Benefits

• Enables underwater patching of small holes in marble plaster pools
• Quick setting time of approximately 5 minutes
• Suitable for underwater and dry applications
• Strong adhesion to prepared concrete and plaster surfaces
• Durable, long-lasting repair

Act fast when you see a crack or hole. Small defects can become major structural issues if ignored.

Ideal Applications

• Repairing small holes and recesses in marble plaster pools
• Sealing minor cracks below the waterline
• Emergency leak repairs
• Also: Surface patching on drained (dry) pools

Application Methods

Method 1 Trowel Application (Underwater)

1. Properly prepare the repair surface by removing loose material.
2. Mix the paste according to instructions.
3. Apply sufficient paste to the back of a small rounded trowel.
4. Protecting it with a cupped hand, take underwater and firmly trowel into the hole or recess.
5. Make as few passes as possible.
6. Remove excess material from the shoulders of the cavity.
7. Do not disturb for 24 hours.

Method 2 Plastic Bag Method (Underwater)

1. Prepare the surface properly.
2. Place mixed paste in a plastic bag that fits over your hand like a glove.
3. Invert the bag to protect the paste when taking it underwater.
4. Position at the hole or recess.
5. Pull the edge of the bag back over your hand and press the paste firmly into the cavity until flush with the surrounding surface.

Important: 

Avoid overworking or excessively agitating the paste underwater, as this may cause it to loosen and disperse into the water.

Why Choose Cemcrete Under Water Pool Patch?

• No need to drain your pool
• Saves water and labour costs
• Fast emergency repair solution
• Designed for marble plaster finishes
• Proven performance in swimming pool applications

Quick-setting. Underwater capable. Rock-hard finish.

Repair cracks early. Protect your pool shell. Avoid bigger costs later.