Lido, ½x½" Confetti. Photo courtesy of Charlota Blunarova.

Ultrasonic Cleaning

Ultrasonic cleaning is a less conventional, yet increasingly popular method for addressing calcium deposits on pool tiles. This technique uses high-frequency sound waves to create microscopic bubbles in a liquid solution. When these bubbles collapse, they generate tiny, powerful jets of water that gently remove calcium deposits and other contaminants from the tile surface.

This method of cleaning is particularly appealing because it minimizes physical contact with the tile surface, reducing the risk of scratching or damage. It’s highly effective for removing calcium buildup on intricate mosaics and tiles with delicate textures. As with all professional methods, it is crucial that ultrasonic cleaning be carried out by experts who understand the appropriate frequencies and cleaning durations for different tile materials.

Steam Cleaning

Steam cleaning is another tried-and-true option for removing calcium deposits from pool tiles. By applying high-temperature steam, professionals can loosen and dissolve calcium buildup, making it easier to remove with a pool brush or sponge. The steam also sanitizes the tiles’ surface, ensuring that the tiles are both clean and free of harmful bacteria.

The key advantage of steam cleaning is its ability to deliver a deep clean without the use of aggressive chemicals like muriatic acid or vinegar, which can sometimes be too harsh for certain types of tile. However, the application of steam requires precise control; too much heat or prolonged exposure can potentially lead to thermal shock in sensitive materials.

What Causes Calcium Buildup on Pool Tile?

Calcium deposits, often referred to as scale, are primarily composed of calcium carbonate and calcium silicate. These compounds are naturally present in hard water, which is common in many regions. When water evaporates from the pool area, it leaves behind mineral deposits that accumulate over time.

Several factors contribute to calcium buildup on pool tiles. When the pH levels are not properly maintained, it can accelerate the formation of calcium deposits. Additionally, factors such as water temperature, mineral content, and the frequency of pool use can all influence the rate at which calcium buildup occurs.

For designers, it is important to recognize that calcium buildup is not just a cosmetic issue but also a sign of underlying water chemistry imbalances. Keep this knowledge in mind as you select tile materials and advise clients on what routine tile maintenance will look like.

How to Prevent Calcium Buildup on Pool Tile

Preventing future calcium buildup on pool tiles is as important as addressing existing scale. By taking a proactive approach, pool owners can help ensure that pool water remains clean and that the tile surface retains its pristine appearance.

Professionally Applied Sealants

One of the most effective ways to protect pool tiles from calcium deposits is to have a professional apply a sealant after installation (and then reapply it as needed). Sealants create a protective barrier on the tile surface, reducing the direct contact between pool water and the tile.

As always, the sealant should be compatible with the the particularly swimming pool tile material. Certain sealants are designed for travertine pool deck tile, for example, while others are better suited for ceramic or porcelain tiles. The tile’s material guidelines should specify which sealers are best.

Routine Maintenance and Cleaning

Routine maintenance and cleaning are the cornerstones of a successful pool tile care program. Professionals often recommend that pool tiles be inspected and cleaned every few months, depending on the usage and the specific water conditions.

When it comes to cleaning, using a gentle pool brush or sponge in circular motions can be effective in removing light deposits without damaging the tile surface. However, it is important to avoid harsh chemicals that may react with the tile material. Products designed specifically for pool tile care, which are safe for both the tile and the pool water, are always best.

Water Chemistry Management

Maintaining the proper pH balance in pool water is critical in preventing water stains and scale. Regularly monitoring and adjusting the pool water chemistry — especially the levels of calcium, pH, and alkalinity — will help keep buildup and deposits from forming in the first place.

For designers advising clients, emphasizing the importance of water chemistry management can lead to significant long-term benefits. Proper water chemistry not only promotes a healthier pool water environment but also helps maintain a clean and beautiful pool tile surface for years to come.

Installing a Water Softener

For many pool owners dealing with hard water, installing a water softener can be a transformative solution. Water softeners work by reducing the concentration of minerals such as calcium in the pool water, thereby minimizing the chance of calcium buildup on pool tiles. By exchanging calcium ions with sodium ions, water softeners effectively lower the hardness of the water.

For designers, recommending a water softener as part of the pool system can be an effective long-term strategy. This approach not only prevents future calcium deposits but also enhances the overall quality of the pool water. Of course, water softeners should be selected and installed by professionals who understand the specific needs of the swimming pool system.