![]() This involves applying different stains, dyes and tints using a sprayer, rag or brush. Once the material has set, the coloring takes place. Once the material has been applied, stamping, texturing or hand carving is performed to make the material look like stone, rock or wood, depending on the look desired. The actual application is pretty straightforward, and involves troweling material onto the subbase at the desired thickness. For vertical applications, this usually involves installing some type of metal lath or wire reinforcement for the vertical stamp mix to adhere to. As when applying horizontal decorative overlays, the most important aspect is a stable, clean, and well-prepared subbase. The good news is that modern vertical stamp mixes are pretty forgiving and easy to work with. Proper application of the stamp mix is critical to long-term durability and success. Tru Pac conversion kits use a combination of lightweight components, extended-range flow modifiers and proprietary cementitious materials to produce vertical concrete that retains its moisture and workability at overlay applications ranging from thin to thick. I want this stuff to be like butter, creamy and easy to carve when you work with it,” he says. “You should be able to throw the product on the wall without it sagging or falling off, but it needs to have plasticity. It has to exhibit thixotropic properties. The other key factor Farnsworth looks for is how well the material holds to the wall. Larger sand in the mix only detracts from the finished piece when hand carving.” “I don't want to see large sand when working with the material. For better aesthetics, the sand gradation of the mix is also important. Farnsworth also prefers mixes where you just add water, mix well, and the product is ready to go. I don't want to worry about shrinkage cracks when stamping, or rapid setting that limits a custom hand carved piece,” he says. “I want to be able to have plenty of time to work with the material. As someone who has developed and installed vertical stamp mixes, he is looking for specific criteria when working with these types of mixes. I want a mix that is flexible - something that can be carved, stamped and colored with ease,”says Brain Farnsworth, director of technical services for Bomanite Group International. ![]() “The most critical feature when selecting a vertical stamp mix is the workability. These materials are highly engineered overlays that are able to be applied in thicknesses ranging from ¼ inch to 5 inches or more and stay pliable for hours to permit stamping and carving. The backbone of any vertical stamp project is the base vertical stamp mix. Features to look for in a vertical concrete mix But many manufacturers also sell colorants that can be mixed in with their products to achieve nearly any hue desired. Usually the mixes come in two colors: gray or white. Most products are also water resistant and unaffected by freeze-thaw conditions, permitting outdoor use in most climates. Bag of vertical concrete mix from Flex-C-Ment.īecause of their high polymer content, vertical mixes require no curing.
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