OCTOBER 2017: NTCA BENEFITS BOX

Partnering for Success:
Choose up to $2,000 in vouchers from four new categories

Partnering for Success (PFS) is NTCA’s highly successful voucher program, which gives back to members more than threefold the amount of their membership in setting materials and sundries used by installers every day. Manufacturer partners agree to reimburse vouchers of designated amounts of materials for new and returning members. This allows members to get a discount or free items for some of the materials they use the most, or some of the materials they’ve wanted to try, basically risk free.

This year, the PFS is making a change to four categories: Tile,
Tools/Heating Systems, Sundries and Setting Materials. With the growth of the NTCA – nearly 1,400 members strong now – it became imperative to change the selection process to give exposure to some of some of the smaller participating manufacturers in addition to the well-known and established manufacturers who have been supporting this program for many years. This led to the creation of the four-category system that will be instituted in 2018.

NTCA is aware that people aren’t really fond of change. To soften the impact of changing to a four category system, NTCA increased the dollar value from $1,800 in vouchers per member to $2,000 in vouchers per member – more than three times the value of the $600 NTCA annual membership. Every member of the NTCA can find at least $600 worth of free materials that will offset the membership cost. In addition to the vouchers program, membership dues give the NTCA the ability to continue the quest to promote qualified labor and certification, elevating the industry and the trade.

OCTOBER 2017: NTCA UNIVERSITY UPDATE – 2018 NTCA University pricing includes free option for single contractor members

Thank you to everyone who took advantage of the introductory offer
for NTCA University. This offer gave your company access to NTCA
University through the end of 2017. We received a lot of feedback from members – some positive and some negative – but we listened to everyone and took all of this into consideration when we were developing pricing for 2018.
Below is pricing for all members – contractors or manufacturers – based upon the number of users they would like to have taking courses on the site.

• 1 – $50
• 2 – $99
• 3-15 – $149
• 16-50 – $199
• 51-100 – $299
• 101-150 – $399
• 151-200 – $499
• 201 or more – call for pricing
Free access for one-person shops Remember that NTCA now has a $50 voucher for the NTCA store that contractors can choose as one of their Parnering for Success vouchers. So let’s say that you are a one-person shop and choose to use the $50 voucher for access to NTCA University.

This means that you will have access for free to the site for the whole year. You’ll see this purchase option on the NTCA store as we get closer to the end of the year. And for those of you that want to pay your membership dues and NTCA University access together, we are currently looking into giving you this option when we mail out renewal notices at the end of the year.
As we get closer to completing two years of introductory courses and the development of our setter courses, we will continue to add courses to the site that you can use to train your employees. We have three sub-committees within the Training and Education Committee working on developing content for NTCA University. If you are interested in working with one of these committees please let me know. We can always use a new perspective on the types of courses that should be developed.

 

If you have any questions, please feel free to e-mail me at [email protected].

OCTOBER 2017: MEMBER SPOTLIGHT – Surfaces 15

Sponsored by

 

 

 

 

 

 

 

 

 

 

 

Partnership parlays passion and change for good into benefits for business and the industry

Greg Twarog and Edwardo Martinez formed the partnership Surfaces15 (www.facebook.com/surfaces15) three years ago with the concept of creating a diverse clientele and body of completed work. The company has held true to that goal, with an average of 25 projects going at all times, varying in size and job scope. By utilizing the vast talents of its teams, Surfaces15 (S15) – located in Downers Grove, Ill. – can tackle projects ranging from small remodeling repairs like replacing sealant on an old tub back to full scale remodeling projects refinishing basements, kitchens and baths or small to medium scale commercial build outs.
The company focuses on detailed, custom jobs, but also undertakes install production type projects on occasion, never sacrificing quality. S15 utilizes CTEF Certifi ed Tile Installers (CTIs) to install stone tiles, Saltillo, stone slabs, large thin gauged porcelain panels, LVT, VCT, custom and commercial carpet, hardwood, hardwood refinishing, engineered hardwood flooring, large-scale floor prep, epoxy, and conduct moisture mitigation. The team is Nuheat pro certified, skilled in wedi waterproof shower systems, and steam
shower installations. Though leading a young, three year old company, Twarog and Martinez have over 50 years of installation experience between them. Martinez is a second-generation flooring installer, working in the commercial and residential arenas;

Greg Twarog with recently-completed residential remodel in Crete, Ill.

Twarog is a first-generation tile setter, classically taught the tile trade from laborer to journeyman and eventually business owner – all the while specializing in the custom residential market. Both men bring the experience of owning their own flooring businesses to the mix. Twarog transitioned from business owner to working for a Chicago-area distributor during the recession, eventually moving up to outside sales rep. “When Edwardo and I met, and we both realized we shared the same passion and philosophy for the industry, we decided to move towards our common goal and form Surfaces15,” Twarog said.

Both agreed to build S15 from scratch from hard work and from their own skills and contacts and networks. After a year of business they decided – as Coverings 16 Chicago approached – that they would make it a point to attend and to participate with their vendors and network as much as they could for the week.

 

This project is a private residence and contract for a remodel in Crete, Ill. A
Leveltec tuning system eliminated the chance of lippage on this job.

“We went and after a weeklong discussion we both decided to make the investment into the NTCA,” Twarog said. Why did it take a week? Why not sign up right away? After all, there are vouchers after all and many benefits to be had. “Edwardo and I don’t do anything halfway,” Twarog said. “We knew if we decided to sign up we would be all-in. All-in for us, means we would want to both be CTEF CTIs and we would also both want to be State Ambassadors so we could both be a bigger part of the tile industry in a way that would set us apart from all the rest.”
Now, just over a year later they are both CTEF CTI certified as well as many in their network of installers. “In this short time we have been involved with many of our vendors through both the NTCA and the CTEF,” Twarog said. “This has been extremely gratifying to see the positive changes in both ourselves as well as our local industry.”

 

 

 

Surfaces15 and NTCA: creating change for good

As Martinez and Twarog show up as new NTCA Illinois Ambassadors, they have shared their vision with vendors and discovered they share the same passion for the goal for change. “We asked if they would be interested in hosting NTCA events and CTI test days,” Twarog said. “They liked the idea so much, that they have made special provisions with the CTEF for eligible contractors to take CTI tests at their local stores anywhere nationally. This is not only a huge commitment to their contractors but also their clients to help assure a successful install of their products they sell.

“That has been the greatest value that the NTCA has yielded to us, being able to successfully make a positive change and impact to our industry as a whole,” Twarog
added. “When you see Mark Heinlein drive into your town in the NTCA truck you know something will be learned and good change will come from it,” Twarog said. “That’s what is most important to us, and that is what we volunteer for – the positive change and the sharing of good installation practices so fewer failures occur.

Failures are never good for our industry. They make all our jobs more difficult when we go out to sell that big project we want to work on to the Mr. and Ms. Smiths or the general contractor that we have just met. “As you will see in our installations, it does not matter if Edwardo or I install the project, or if it’s our team members from our network, Surfaces15 has a passion for what we do that shows through in our workmanship and finished product,”
Twarog said. “We are always willing to lend an ear and offer or research advice to help,” he added. “Many already know this about us and it’s something that I don’t see ever changing.”

A residential project in Lincoln Park, Chicago.

Surfaces 15 used The Tile Shop 8″ x 48″
planks, with Blanke edging and tuned with
MLT Mechanical Lippage Tuning system in this Indian Head Park, Ill., balcony.

 

 

 

 

 

 

This 32,000-sq.-ft. office buildout and warehouse space on Bradley Street in Chicago was for Power Homes. Surfaces 15 did all flooring aspects including grinding down entire building using large industrial equipment and edgers, and moisture mitigation. Tile is from Daltile, carpet tile from Mohawk and warehouse sealer coat from Sherwin
Williams.

OCTOBER 2017: BUSINESS TIP – NTCA launches new Career Center

Sponsored By:

 

 

 

 

NTCA has added an updated, high-powered Career Center to its list of member benefi ts that allows you to bypass extraneous listings you’ll find on commercial job boards. The NCTA Career Center is tailored specifically for you. There are opportunities for both job seekers and employers. Job seekers can manage their job search, access job postings, post a resume, or join the job alert system. Employers can quickly post job openings, manage online recruiting efforts, advance resume searching, or reach targeted qualified applicants.

Job Seekers

The Career Center is designed to provide you with a better overall experience through a modern design and an intuitive interface. You will be able to access the Career Center through any device of your choice- smartphone, tablet, or desktop. Job seekers Once you create an account you can start and track your search. There’s an ability to manage resumes and set job alerts.

And the services to job seekers are free! In the Find a Job section, there is a listing of hand-picked employment opportunities culled from the web. Next to this listing is a link that enables you to upload your resume, and allow employers to find you! You can tailor your job search by state or do a nationwide search for the type of position you seek, and return 10-100 results at a time. In the Resources section, there is a collection of articles that will help you with a range of job related activities, like honing your resume, preparing for an interview and even planning a career change or using digital tools to network and gain exposure.

You can also schedule a session with a career expert who can coach you and answer your questions in one business day.

Employers
There are a number of recruitment options available for employers, starting from a single,
30-day job posting, and a number of enhanced packages. Search for
resumes, keep track of candidates, post information about your company, and much more. A template tab allows you to store letters, job posting templates and templates for questions you want to ask someone considering a career with your company.
Development of this iteration of the Career Center is in direct
response to NTCA member feedback. “One of the most consistent messages we have heard from our members recently is that the tile industry offers numerous career paths,” said Bart Bettiga, executive director. “From sales and installation, to training and technical assistance, to business and project management; there are so many great jobs for people who commit to learning about tile and stone.

We at the NTCA are excited to offer an easy-to-use program that will allow for people to post their resume to explore their options at furthering their career. As more and more people do this, we will be able to help connect companies looking for qualified people in the tile and stone industry to these candidates.”
Access the Career Center on the home page of the NTCA website at www.tile-assn.com or
paste either of these links in your browser: http://bit.ly/2yENKhA or http://careerwebsite.com.

October 2017: TileLetter – Ask the Experts

QUESTION
I have a floor installation with a relative humidity reading of over 90%. Can you advise me of steps I might take to prevent a failure in this installation?

ANSWER
This is a very high reading and beyond the capabilities of most setting materials. In general, most setting products perform well with readings of 3 lbs/1,000 sq. ft./24 hours in calcium chloride test, or readings less than 75% using a relative humidity test. The effect of moisture on floor covering is a huge problem across the United States. Not addressing this issue with a moisture mitigation system will affect the longevity and performance of this installation and probably lead to some type of failure. Some manufacturers have moisture mitigation systems that include waterproofing membrane, and specific thinset mortars that are warrantable up to 12 lbs/1,000 sq. ft. and above 90% relative humidity. My advice to you is to use a moisture mitigation system and the appropriate setting materials that can handle that level of moisture.

There are thousands of setting products that are affected by differing
amounts of moisture in a variety of ways. Using the information
you have received from a relative humidity test in concert with technical data from your setting material provider is paramount for a successful installation.
– Robb Roderick,
NTCA technical trainer/presenter

 

 

 

 

 

 

QUESTION
I was helping a friend with a concrete shower base install and ran into a problem. We poured the concrete base with the required portland cement/sand mixture at
the correct slope. About a month after the tile install, the grout started chipping out. After regrouting it continued to fall apart. We pulled up the tile and it came up pretty easy. It’s been about five days now and the concrete still looks wet. I cleared out the area around the drain to make sure the weep holes were clear and they were. Why is the base still wet? I’m hesitant to install new tile on top until it’s dry. Help please!

ANSWER
Can you tell me if a pre-slope of a 1/4” per 12” was installed first then a liner placed over the preslope and sealed to the clamping ring drain, then the mud pack over that?
Or, was a surface-applied waterproofing membrane installed on top of the sloped dry pack mud bed and sealed via the divot method to the clamping ring drain? If not, the mud pan is going to hold water if there is no membrane channeling it to the drain system.

Showers and pans are complex systems that must be installed properly to protect the rest of the structure they are installed in. I strongly suggest hiring a qualified professional to perform this installation. The NTCA is the world’s largest association of tile contractors. You can locate an NTCA Member contractor and a Certified Tile Installer in your area by visiting the following sites: www.tile-assn.com or www.ceramictilefoundation.org.

– Mark Heinlein,
NTCA technical trainer/presenter

 

 

 

 

 

RESPONSE
Thanks for the quick reply. It looks like I did all of the correct things outlined in your email with exception of the divot method. Now after reading up on the divot method I have questions. Does it require a drastic slope to the drain as shown in the picture
below? Also does this method call for a paint-on membrane to be put on the very top? Let me know and thanks again for your time.

 

 

 

 

 

 

 

ANSWER
Either a liner on the pre-slope or a surface-applied membrane must be used. Not both. Whichever one is used, it must be properly sealed to the clamping ring drain. The divot allows for using a surface-applied membrane in lieu of a pre-slope and a liner with a clamping-ring drain system. Or, a bonding-flange drain system can be utilized to accommodate a surface-applied membrane. There are many variables, techniques, best practices and standards that must be considered, applied and performed correctly in every tile installation. Showers and wet areas are especially critical.

I suggest contacting a qualified, certified, knowledgeable, experienced professional using the links I sent previously. – M.H.
RESPONSE
Mark, thank you. I did the liner on the pre-slope so I should be
okay. I just wasn’t sure why the base retained so much moisture even with the liner, slope, and weep holes all in working order.
ANSWER
Drainage issues could potentially be related to the site mix/recipe or consistency of the mix, method of application, etc. Perhaps the problem with the grout could be related to the type and mixing and application of grout or the type and mixing of the mortar and troweling technique used to bond the tile to the mud pack. – M.H.

October 2017: PRESIDENT’S LETTER Martin Howard

NTCA participates in international outreach during Cersaie in Bologna, Italy

Leaders of the National Tile Contractors Association were recently honored guests at the Cersaie Ceramic Tile Trade Fair, held annually in Bologna, Italy. Cersaie took place September 25th-29th, and is the world’s largest exhibition of ceramic tile and installation
materials. NTCA executive director Bart Bettiga, chairman of the board James Woelfel and

I attended the exhibition and collaborated with leaders of several international associations dedicated to the professional installation of ceramic tile. In addition to attending the fair and technical seminars, with an emphasis on large-format and gauged porcelain tile panels, NTCA leaders participated in an exclusive meeting with representatives of Assopossa, the Italian association dedicated to ceramic tile installation.
The emphasis on the meeting was on training and education, and promoting best business practices of tiling contractors. In addition to the board of Assopossa, leaders of the EUF, the European Federation of National Tilers Associations, also participated in the summit discussions. Topics on the agenda included different systems of certifi cations, for both installers and contracting companies’ education and training initiatives, including apprenticeship programs, keeping pace with changing and innovative technology, and safety in the workplace, especially as it relates to the creation of dust during work place operations.

An official tour of four technical partners of Assopossa was also part of the program, with official visits at Cersaie scheduled with Fila Care and Maintenance Systems, MAPEI Coporation, Raimondi Tools, and Schluter Systems.
The NTCA Board of Directors has identified international outreach as one of its main strategic objectives. The goal of this outreach is to establish dialogue and collaboration with other associations with shared interest in promoting and advancing the proper professional installation of tile and stone in the market place. We seek opportunities to learn and collaborate with these associations to continue to build consensus within the industry where advantageous. The desire is to engage the manufacturers with a broad base of support for training and education that enhances the use of tile and stone with technically sound and beautiful installations around the world. NTCA has previously developed programs and relationships with tile and installation associations in Australia, Canada and Spain. Discussions with other associations are ongoing.

Keep on tiling!
Martin Howard, president NTCA
Committee member, ANSI A108
[email protected]

OCTOBER 2017: EDITOR’S LETTER: Lesley A. Goddin

It is currently September 8, 2017 and I am wrapping up this issue and our November issue. Why so early you say? Many of you contributors and sponsors are REALLY asking this question, since I’ve been giving you fits and pressing you on deadlines.

Because on September 15, I am flying to Barcelona, and then taking a train to Leon, Spain, where I will walk 200 miles of the Camino of Santiago de Compostela, a 500-mile pilgrimage route in northwestern Spain traveled by thousands and thousands
of pilgrims for over 1,000 years – all making our way to the Cathedral of Santiago, where the remains of St. James the Great are enshrined (Never heard of it? Watch “The Way” with Martin Sheen and Emilio Estevez. It’s on Amazon Prime). Carrying all
I need in a 15-lb. backpack, the next month promises to be a life-changing
experience. I’ll be back in Albuquerque October 16, just about the time you’ll be receiving this magazine – and just in time to jump into compiling our

December issue. The crunch is to be sure all the issues are ready to be designed, produced and printed before I leave. With only one week to go, honestly, it’s hard to think of anything else. I hope to see beautiful examples of tile and stone along the way and will share those with you on my return.

But I DO have to think of other things (for the next week at least), so let me draw your attention to some of the features in this issue. We have our annual Women in Tile installment in October, in which we talk with mosaicist Angie Halford, and designer/ installer Chanel Carrizosa about their journeys through the tile
industry.

We also have a couple of social media-derived stories:
Decorative Tile and Hot Topics. The Facebook tile groups are great founts of opinion and encouragement and catalogs of beautiful jobs as well as failures. I love the support and encouragement I see being offered from contractor to contractor, supplier or association to contractor, regardless of gender, race, color, creed, country of origin, or political persuasion in these groups. If you can do the job – or you are striving to do better or refine your skills – NTCA Members Only, Tile Geeks, Tile Love 2.0, Global Tile Posse, (and
possibly others I have not yet discovered) are there for encouragement, inspiration, commiseration, and sometimes some ribbing (it comes with the territory).

We also have a story about NTCA’s new Career Center, which is a fantastic resource for both those looking to fill positions and those looking for work alike. So there’s plenty of inspiring, encouraging, useful and heartfelt information for you as you journey through your days the next month. I wish you well with the pilgrim greeting I will be giving and receiving countless times before mid-October: Buen Camino! Because all of life is a journey.

God bless,
Lesley
[email protected]

ON THE COVER: LATICRETE International – August 2017 GREEN Feature

Waiea Tower represents a new level of architectural sophistication

 

HYDRO BAN was used to support the heaviest materials, including Jade Green Onyx, seen here in the 36th floor penthouse shower. Photo credit – BMK Construction.

From the top of the mountains, all the way out into the ocean, every aspect of life in the Kingdom of Hawaii aims to be synergistic and sustainable, including its residential communities. With the goal of becoming the largest LEED for Neighborhood Development Platinum (LEED-NP) certified community in the country, building owner Howard Hughes Corporation hired James K.M. Cheng in collaboration with Rob Iopa and WCIT Architecture to design Waiea Tower, the flagship building of what is to be Honolulu’s most distinguished neighborhood, Ward Village.

The 60-acre coastal master planned community allows for up to 9.3 million square feet (approximately 863,998 m2) of mixed-use development and offers numerous outdoor gathering spaces that embrace Hawaiian culture, the perfect mix of urban and eco-friendly living. At completion, the community will include more than 4,000 residences and over one million square feet (92,903 m2) of retail shopping. To complete the construction of the 36-story tower, BMK Construction was enlisted to handle the tile and flooring installations for all of Waiea’s units and public spaces including the pool deck, level one lobby, porte cochere and four levels of penthouses.

“The Waiea Tower represents a level of architectural sophistication never before available in Hawaii, so it was exciting to be a part of history,” said BMK Construction project manager Kent Amshoff. “With the design team utilizing only the highest luxury elements, BMK Construction chose to use a range of LATICRETE® products to ensure long-lasting, quality installations that were also good for the environment.”

For centuries, water has been one of the most treasured resources of the Hawaiian people. As is typical of the entire community’s tie to Hawaiian culture and history, Waiea’s design pays homage to the Hawaiian term for “water of life” that links the structure to the importance of water in Hawaii’s coastal landscape.

BMK Construction used 255 MULTIMAX as a large-and-heavy-tile adhesive mortar to install the Kenyan Black Onyx backsplash. Photo credit – BMK Construction

Challenges: 

For waterproofing bathrooms, HYDRO BAN  was used as a thin, load-bearing waterproofing/crack-isolation membrane. Photo credit – BMK Construction

Logistical Procurement: High-end design materials from around the world were brought in from countries such as Italy, Portugal, China, Kenya, Turkey and the U.S. mainland. This proved challenging to assure proper quantities and specifications of each product would be delivered in time for installation.

Quality Control: Maintaining stringent levels of quality was a major concern during construction as multiple delays occurred due to massive rain storms in the summer of 2016. This mostly affected the installation of the pool deck, as contractors were not able to perform duties outside. Additionally, due to the high-end design elements, such as custom marble walls in the penthouse bathrooms, all plumbing work and leveling work needed to be performed with precision, as there would not be a second chance to get the installation right.

A LATICRETE solution: 

PERMACOLOR Grout was used for its high-performance properties, which provide a grout joint that is dense, hard and will resist cracking. Photo credit – BMK Construction

To meet the goal of acquiring LEED certification, all LATICRETE products chosen for the construction of Waiea Tower were those that have received multiple certifications and declarations including Health Product Declarations (HPD), Environmental Product Declarations (EPD) and UL GREENGUARD Gold Certifications for low chemical emissions.

“LATICRETE is currently the only company with a full product-specific EPD for its cement self-leveling underlayments, cement grouts and cement mortars that includes both 255 MULTIMAX and PERMACOLOR® Grout,” said Amshoff. “These certifications gave Howard Hughes Corporation the peace of mind that LATICRETE is on the leading edge of sustainable innovation by providing transparency about the life-cycle impacts of their products.”

3701 Fortified Mortar thick-bed mortar was used to slope the pool deck to the area drains. Photo credit – BMK Construction

LATICRETE HYDRO BAN was carefully applied to make sure the shower updates are long-lasting. Photo credit – BMK Construction

To set all tile, BMK Construction used 255 MULTIMAX as a large-and-heavy-tile adhesive mortar. The patented, versatile polymer-modified thin-set was chosen due to its exceptional non-sag performance on walls, build up of 3/4” (18 mm) without shrinkage for floors, and maximum coverage due to its lightweight, creamy and smooth consistency. In addition, 255 MULTIMAX is reinforced with Kevlar® to provide maximum strength and durability, and now contains less than 10% post-consumer recycled content.

For waterproofing bathrooms throughout the entire building, including the 500 square feet (46 m2) of penthouse master bathrooms’ showers and toiletry areas, BMK Construction used HYDRO BAN® as a thin, load-bearing waterproofing/crack-isolation membrane. Thanks to its “Extra Heavy Service” rating per TCNA performance levels (RE: ASTM C627 Robinson Floor Test), HYDRO BAN was able to support even the heaviest materials, including Jade Green Onyx, which is seen in the 36th floor penthouse shower.

3701 Fortified Mortar thick-bed mortar was used to slope the showers, baths and pool deck to the area drains. Additionally, 3701 Fortified Mortar was used on the drive line where granite paver stones were present and applied on top of HYDRO BAN for the installation of structural concrete slabs. Chosen for its ease of use, 3701 Fortified Mortar is a polymer-fortified blend of carefully selected polymers, Portland cement and graded aggregates that does not require the use of latex admix. Water is the only element needed to produce thick-bed mortar with exceptional strength.

To grout, PERMACOLOR Grout was used for its high-performance properties, which provide a grout joint that is dense, hard and will resist cracking. Additional benefits include consistent color, fast setting and improved stain resistance for a cement-based grout.

255 MULTIMAX, the patented, versatile polymer-modified thinset, was chosen due to its exceptional non-sag performance. Photo credit – BMK Construction

Outcome

“With the help of LATICRETE, Ward Village is now the largest LEED-ND Platinum certified development in the country,” said Amshoff. “This building is at the forefront of sustainable development and solidifies the LATICRETE commitment to environmental responsibility.”  Waiea, the first completed residential tower, welcomed its first residents and anchor tenant Nobu in late 2016. Three high-rise residential buildings are currently under construction – Anaha, Ae‘o and Ke Kilhoana – and will be home to internationally acclaimed brands such as Merriman’s Restaurant and a flagship Whole Foods Market®.

Ask the Experts – August 2017

QUESTION

An architect has requested my input relative to developing a labor and material specification for installing new porcelain floor tile over existing granite floor tiles in a high-traffic lobby in a commercial office building. Can you direct me to any relevant literature or information that addresses such applications? Thanks.

ANSWER

I suggest referring your architect to the 2016 TCNA Handbook methods TR611, TR711 and particularly TR712. Please note that if the installation is not, or cannot be made acceptable for tiling over with a thin bed system, Method F111, or another method, may be required.

As described in TR712, it is critical that the existing installation be sound, well bonded and without structural cracks. It must be determined if the existing installation will properly support the new installation. The existing tile and its bond to the substrate and the condition of the substrate will all reflect on the performance of the new installation. If there are existing structural cracks, their cause will have to be explored before using the existing surface as a substrate. It is advisable to consider the need for a partial or full crack isolation membrane. Those methods are F125-Partial and F125-Full in the TCNA Handbook.

Any existing expansion in the substrate beneath the existing installation must be honored in the new installation. TCNA Handbook Method EJ171 will be the reference to all expansion and other types of joints that must be honored and designed and installed into the new system. Note that EJ171 states the architect shall specify the location of any expansion joints and other soft joints throughout the field and other locations such as the perimeter and any change in plane. Have the architect specify in writing (via drawings) where these are to go and which materials and EJ171 details should be used to construct them.

Checking for the ability to bond to the existing tile is imperative. If there are sealers or oils or waxes, etc., on the existing sur- face, they must be removed. If the tile is highly polished, it will likely require mechanical abrasion to allow the bond coat to adhere. I suggest doing a simple bond test by mixing and placing (including keying in) the mortar that will be used for the project onto the surface of the existing tile. Do this in several representative locations. Allow the mortar to cure for several days then remove it to determine how well it was able to bond to the substrate. You can select the trowel you will use for the job, comb the mortar and place a tile on top of the bond coat as a means of checking your coverage and inspecting the overall performance of the bond coat at the same time. Document everything about this test in writing and with photographs. Repeat the test with other materials and

tools if needed.
Depending on the results of the

bond test, it may be advisable to apply a primer that will facilitate bonding. Some setting-material manufacturers have specific primers designed for this purpose. They can recommend their best products (including mortar) for this application. I suggest using a system approach from one manufacturer that includes any primers, membranes, mortars, grouts, sealants, sealers, etc. I advise you to contact the technical representative of your preferred manufacturer about this job. They will be happy to assist you in writing a system warranty specific to this job.

Please also refer to ANSI A108.01 2.6.2.2 as an important reference for this installation.

It is necessary to ensure the substrate meets industry standard flatness requirements found in the ANSI Standards and TCNA Handbook. Please refer specifically to ANSI A108.01 2.6.2.2.

Generally speaking the standard is:

  • 1/4” in 10’ for tile with any side 
less than 15”
  • 1/8” in 10’ for tile with any side 
15’ or longer
  • Flatness can be checked with a 
10’ straight edge.

Financial allowances must be included in the specification, and proposal for labor and materials to flatten and otherwise prepare the substrate must be included in the specification and proposal. 
Tiling over sound existing tile as a substrate is an excellent way to proceed. As with any tile installation, careful research, proper planning, using the recommendations of industry standards, following manufacturer instructions, using a system approach, good communication and documentation before you proceed will mean a great and long-lasting installation and will make all parties happy with the end result. You are already on the right path. I hope this helps!

Mark Heinlein, NTCA Trainer/Presenter

NTCA University

Knowledge is power, the saying goes. And NTCA is doing its best to be sure you are knowledgeable about your industry and your trade, and a powerful force among customers, clients and competitors.

One of the ways NTCA is doing this is through NTCA University. If you haven’t heard about this veritable online college, visit www.tile-assn.com for details.

To recap, the first six months of the Finisher Apprentice Program in NTCA University are complete, packed with course content from contractors and manufacturers. There are over 40 courses in the 0 – 6 month Finisher Apprentice Orientation section of the program. Each course ranges from 10-20 minutes in length and has a quiz following to test the learner’s knowledge. These courses are, obviously, useful for apprentices, but also for those in the industry for many years since they contain safety and product information that benefits anyone in the trade. For example, if you haven’t worked with epoxy grout for a while, you can take a course on it as a refresher.

One of the benefits of NTCA membership is that NTCA contractor members receive special pricing.

  • NTCA Contractor Members: $99 per company
  • Associate/Affiliate Members: $199 per company
  • Non-NTCA Members: $499 per company

If you purchase this subscription, you will have access to all of the online learning content, including anything new that is created, through December 31, 2017. As long as you have internet access, you can view courses from a computer, tablet, or phone.

Visit the NTCA Store at www.tile-assn.com to purchase your NTCA University subscription. And get started pumping up your knowledge or welcoming new apprentices, armed with know-how and information to make your company a leader in the field.

Want to know more? Visit NTCA University Update on page 98 of this issue.

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