From Realtà Mapei n° 39 - 12/13/2024
Ceramic and stone tile installations have long been favored for their durability, aesthetic appeal and versatility. However, traditional tile installations can be time-consuming, particularly when preparing substrates, and when waiting for thin-sets and grouts to set and cure. With the advent of fast-setting installation products, this process has become significantly more efficient, offering numerous benefits for professional tile installers and their customers. Here, we’ll explore the advantages of using fast-setting substrate preparation materials, thin-set adhesives and grouts in ceramic and stone tile installations.
One of the most significant benefits of fast-setting materials is the drastic reduction in project time. Traditional tile installation often requires waiting for hours, or even days, between steps to allow materials to set and cure properly. Rapid-setting substrate preparation products, thin-sets and grouts can shorten these waiting times dramatically, enabling installers to complete projects much quicker. This is particularly advantageous for commercial projects where time is of the essence, such as in airports, shopping malls, restaurants or any location where minimizing downtime is crucial.
For professional tile installers, time is money. The ability to complete more projects in less time without compromising on quality means that contractors can take on more projects, increasing their overall productivity and profitability. Fast-setting materials allow for same-day installation, where the substrate can be prepared, tiles installed and grouting completed all within a single day. This streamlines the entire process and reduces labor costs, making it an attractive option for both commercial and residential tile contractors.
In renovation projects quite often, you do not know the condition of the substrate until all the finishes are removed. Fast-setting patching compounds like Mapecem Quickpatch, and quick-setting mortar beds like Planislope RS provide greater flexibility in scheduling, especially when dealing with tight deadlines or unforeseen substrate issues. For instance, if a gauged porcelain tile (GPT) project experiences unexpected interruptions because the walls are not flat or plumb, the quick-drying nature of Planitop 330 Fast allows work to resume on top of it as quickly as 1-1/2 hours.
Waterproofing is another critically important installation component that can benefit from faster-setting materials. A faster set can allow for faster flood testing. MAPEI’s Mapelastic Turbo can be flood-tested in as quickly as 3 to 4 hours, depending on jobsite conditions. If flood testing is not needed such as on walls, the surface can be tiled in 90 minutes after waterproofing application. This flexibility can be particularly beneficial in exteriors where wall renders and waterproofing need to be completed despite expected rain or temperature fluctuations that can disrupt the preparation process.
Contrary to what some might assume, the speed at which fast-setting thin-sets like Granirapid cure does not compromise their performance. In fact, many fast-setting products offer superior bonding strength and durability when compared with that of their traditional counterparts. This improved bonding strength ensures that the tiles are securely attached to the substrate, reducing the risk of future issues such as tile movement, cracking and lifting. Some stone and agglomerate tiles are not dimensionally stable and may warp or curl when installed with traditional thin-set mortars. Rapid-setting mortars like Granirapid, Ultraflex LFT Rapid or Keraflex RS can be an excellent solution for these installations. I strongly suggest testing or making a mockup if the tile you are setting is known to have dimensional stability issues.
For residential renovation projects, especially those in occupied homes, minimizing disruption is a key concern. Sometime a path through a house may only be through a single room such as the kitchen where tile is being installed. Fast-setting materials allow homeowners to regain full use of their space in a fraction of the time that it would take with traditional products. Whether it’s a kitchen, bathroom or entryway, the faster the project is completed, the less inconvenient it is for the homeowner – and the installer.
Fast-setting materials are designed to perform well under a variety of conditions, including low temperatures and high humidity. This adaptability makes them a reliable choice for both indoor and outdoor installations, where environmental factors could otherwise slow down the curing process. For example, traditional adhesives may take much longer to set in colder climates, whereas fast-setting alternatives can achieve the same strength and bonding in a fraction of the time regardless of temperature. Another important use of fast-setting materials can be in renovating walk-in coolers in commercial kitchen remodels. It is critical that you check the product’s technical data sheet, and that you know the temperature limitations of even rapid-setting materials in hot-weather or colder-weather installations.
Faster-setting high-performance grouts like MAPEI’s Ultracolor Plus FA can offer a higher quality finish. Because they cure quickly, they are less likely to be washed out or low, leading to a smoother, fuller and more uniform grout line. A high-quality grout finish not only enhances the aesthetic appeal of the installation but also contributes to its durability and longevity. Moreover, high-performance fast-setting grouts meeting ANSI A118.7 are often formulated to be more resistant to staining and cracking, which enhances the longevity and appearance of the overall tile installation.
The use of fast-setting substrate preparation materials, thin-sets and grouts in ceramic and stone tile installations offers numerous advantages, from reducing project time and increasing productivity to providing a stronger, more durable finish. As the demand for efficient and high-quality construction methods continues to grow, these fast-setting products are becoming an increasingly popular choice among professional tile-setters. By embracing these innovations, tile installations can be completed more quickly and effectively, without compromising on quality or performance.
About the author:
Jim Whitfield, FCSI, CCPR, LEED AP, is the Director of Technical Services at MAPEI. He is actively involved in the tile industry’s standards committees (including the TCNA Handbook and ANSI A108 committees), is a National Tile Contractors Association (NTCA) Ambassador and proud member of the NTCA Technical Committee, and is currently the President of the Materials & Methods Standards Association (MMSA).
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