Landscape Contractor / Design Build Maintain

APR 2018

LC/DBM provides landscape contractors with Educational, Imaginative and Practical information about their business, their employees, their machines and their projects.

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concrete pads, that were installed in the park years ago, didn't show the history of this site, the value would be forever lost. Of course, preserving the park's history would be no small feat. Not only did the group want a captivating design, they also desired high-quality products that would withstand the ele - ments, while still protecting the environment. Husband and wife team Bob and Lee Ann Harris, known worldwide in the decorative concrete industry, were first drawn to the project due to its historical significance. "When our clients contacted us and showed us the design concept, both Lee Ann and I thought this was a perfect project to use Surface Gel Tek's Flattoos System," Mr. Harris related. The Flattoo system is a process of etching an image into con - crete using SGT's patented gelled acid and high precision vinyl templates to inlay the graphics. Bob Harris, senior decorative concrete consultant at Struc - tural Services, Inc. and the founder of the Decorative Concrete Institute in Temple, Georgia, had previously worked with Tam - ryn and Daniel Doolan, owners of SGT, and thought they would be perfect for the job. Bob states, "SGT's system eliminates OSHA silica dust con - cerns and have the added bonus of containing no volatile organ- ic compounds, which made it perfect for this project. To start, we proposed SGT produce small samples to establish an expec - tation. Then Tamryn created the Flattoos. We knew from the beginning this would be an interesting and beautiful project." Once the Flattoos were designed and accepted, they were placed onto the concrete pads in the park. The Harris' chose to use SGT's HD24 Pre Grind for the etchings. HD24 is SGT's pat - ented gelled acid that only resembles liquid acid in that they are both acids. HD24 gelled acid reacts with the surface it comes in contact with and is neutralized by water, therefore it poses no environmental issues. "In 20 plus years we've never had a gallon returned because it didn't work," says Tamryn Doolan. After HD24 is applied, the residue is removed by mopping with clean water. HD24 etched off the acid stains that were previously applied, while simultaneously etching the image into the concrete. KenResin solvent-based acrylic with non-skid additive was ap - plied after. The combination literally "popped" the acid stain marbling and brought to life this historic project. Tamryn and Bob have proven over the years just how success - ful teamwork is in the decorative concrete industry. "We've worked on projects for over 15 years with the Harris'. I've never turned down a project for being too difficult" says Tamryn. "In fact, the more challenging, the more I love it." LC DBM 10 LC DBM Above, Right This project required each Flattoo template to be cut into 24 pieces with the largest pieces maxing out at over 11 feet long. It's essentially like a giant puzzle. With the first Flattoo in place, it is etched into the concrete. This step is critical to giving the project longevity because the acid becomes part of the concrete rather than sitting on top of it. The etching process is fairly straightforward: brush it on and scrub it in until it stops sizzling, then remove it using rags or squeegees. Above The blue tracing laid on the ground is the manufacturer's patented Flattoo system. Fun- damentally, it is a stencil that is resistant to acid- based liquids and outlines where the acid should be placed. After the acid is laid, the Flattoo is removed simply with water and a mop or rags. Hardscapes continued from page 8

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