Surface efflorescence on ceramic tiles is not a flaw

Recently another tile manufacturer asked us to review a claim of defective tiles.  

The pool owner's representative was making an assertion that the ceramic tiles on the top of a spa dam wall were defective, as the glaze was changing colors due to UV and chemical exposure.

Tiles at tile of installation (click on image to enlarge)

Tiles after repeated wet/dry cycles (click on image to enlarge)

 
After reviewing the images of the tiles, immediately following their initial installation and present day, it became readily apparent what the cause of the discoloration was.

Efflorescence (or mineral build up) is not considered a defect.  It is a due to the lack of routine removal of mineral build up.  Much like the waters spots that form on dishes or glassware in a dishwasher, this mineral build up does not mean that the dishes or glassware are defective.  Some efflorescence may be coming from the grout or thinset.  But in any case, the tiles are not defective.

Special cleaning services are available that will remove calcium and mineral build up.  Most pool service companies offer these services at an additional charge.  Routine weekly brushing of the tile will not prevent mineral or calcium build up, so the pool service is not to blame either.

As the water evaporates, it leaves a film of minerals behind.  Over time these minerals begin to make the tile appear hazy white.

Some white efflorescence is even visible in the grout joints, before the pool was even completed.

The solution?  Pay someone to remove the mineral build up.  It's a maintenance issue!


Paolo Benedetti, SWD, Principal
Aquatic Technology Pool and Spa
www.AquaticTechnology.com
 International Swimming Pool Consulting and Design, Aquatic Consulting, Watershape Consultants, Expert Witness, Hydraulic Design, Landscape Architecture, Construction Management
Office: 408-776-8220
 Email: info@aquatictechnology.com
Major Markets Serviced: San Francisco, Palo Alto, Atherton, Hollywood Hills, Beverly Hills, Malibu, Los Angeles, San Diego, San Clemente, Pacific Palisades, Escondido, Scottsdale, Seattle, Phoenix, Tempe, Portland, Aspen, Vail, Park City, Chicago, Dallas, Houston, Austin, New Orleans, Madison, Detroit, East Hamptons, South Hamptons, Cape May, Ft. Lauderdale, Orlando, Raleigh, Chapel Hill, Cherry Hill, Toms River, Salt lake City, Boise, Denver, Santa Barbaara, Carmel, Carmel Valley, Monterey, Pebble Beach, Oceanside, Big Sur, Napa, Sonoma, Sausalito, Danville, Belvedere, Montecito, Palm Springs, Midland, Manhattan, Greenwich Village, Osaka, Paris, Madrid, Barcelona, London, Seoul, Sydney, New York, Tokyo, Cairo, Istanbul, Athens, Rome, Lisbon, Bonn.

Glass Tile - ANSI A 137.2 Cracked Glass

Cracked Glass Tile Mosaics

There are thousands of firms jumping onto the glass tile bandwagon. Of course they all want to sell to the pool industry - 1 tile pool is equal to 1000 tile showers or kitchen back splashes. 

This past week, a client and their interior designer showed me some glass tiles from a national tile distributor. They were told that they "are approved for swimming pools."  The client wanted to move ahead.  I forewarned them, that unless the tiles had passed the tile industry's own thermal shock standards, that we would not touch them.

When I contacted the distributor's technical services department, they advised that the tiles had not been tested for compliance with ANSI A137.2.

It is imperative that swimming pool designers and contractors not be lured by false promises and claims of marketing departments, salespeople and showrooms.  Yes, you can install anything in a pool, but not everything is durable enough!

INSIST that any glass tile you specify or install, has been tested and is in compliance with ANSI A137.2.  It outlines the durability requirements, and most importantly, the tile's resistance to thermal shock.

WARNING: There are many name brand tiles that do not comply with ANSI A137.2.  Big box stores, fashion designers, home improvement stores and national tile distributors all have private label brands that do not meet the standards.  Great for a kitchen back splash - but not thousands of square feet in a swimming pool !

REMEMBER - DO NOT take anyone's word for it.  Ask to see the test results from an independent U.S. testing laboratory. Those that have submitted their products for testing are more than happy to provide you with a copy! And they should be proud of it!

For an article that explains ANSI A137.2 check out this link: https://www.tcnatile.com/ima…/pdfs/IntroducingANSIA137.2.pdf

If a firm wants to sell products to our industry, shouldn't they at least conform to the MINIMUM standards in their own industry ??

Paolo Benedetti, SWD, Principal 
Aquatic Technology Pool and Spa 
www.AquaticTechnology.com 
International Swimming Pool Consulting and Design, Aquatic Consulting, Watershape Consultants, Expert Witness, Hydraulic Design, Landscape Architecture, Construction Management 
Office: 408-776-8220 
Email: info@aquatictechnology.com 
Major Markets Serviced: San Francisco, Palo Alto, Atherton, Hollywood Hills, Beverly Hills, Malibu, Los Angeles, San Diego, San Clemente, Pacific Palisades, Escondido, Scottsdale, Seattle, Phoenix, Tempe, Portland, Aspen, Vail, Park City, Chicago, Dallas, Houston, Austin, New Orleans, Madison, Detroit, East Hamptons, South Hamptons, Cape May, Ft. Lauderdale, Orlando, Raleigh, Chapel Hill, Cherry Hill, Toms River, Salt lake City, Boise, Denver, Santa Barbaara, Carmel, Carmel Valley, Monterey, Pebble Beach, Oceanside, Big Sur, Napa, Sonoma, Sausalito, Danville, Belvedere, Montecito, Palm Springs, Midland, Manhattan, Greenwich Village, Osaka, Paris, Madrid, Barcelona, London, Seoul, Sydney, New York, Tokyo, Cairo, Istanbul, Athens, Rome, Lisbon, Bonn.