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Large Format Outdoor tiles advice.
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[QUOTE="gamer1, post: 988743, member: 60892"] For your patio tiling project, here are some answers to your questions: Adhesive Coverage: To calculate adhesive coverage, you'll need to consider both the tile size and the notch size of your trowel. In your case, with 750mm x 750mm tiles and a 15mm bed, you'll likely need a significant amount of adhesive. It's essential to follow the manufacturer's recommendations on coverage for the specific adhesive you choose. Adhesive Type: The Pro Flex SPES Ultra Tile Fix Standard Set Flexible Adhesive you mentioned should work well for your project. It's essential to use a flexible adhesive given the potential for expansion and contraction in an outdoor setting. Priming: While SBR (Styrene Butadiene Rubber) is commonly used as a bonding agent for concrete, it's not typically used as a primer for tiles. For priming, you can use a specific tile primer suitable for the substrate (concrete, in this case). Priming the concrete surface before tiling can improve adhesion. Trowel Size: A 30mm square-notched trowel may not be a standard size, but you can achieve a 15mm bed with a smaller notched trowel by using a technique called "back-buttering" (applying adhesive to the back of the tile). This compensates for the smaller notch size and ensures proper coverage. Back Buttering: Yes, back buttering involves applying a thin, even layer of adhesive to the back of each tile before setting it. This helps ensure good adhesion and coverage, especially when dealing with larger tiles or uneven surfaces. Additional Tips: Make sure your concrete substrate is clean, level, and free from any contaminants. Consider using an uncoupling membrane like Schluter-DITRA under the tiles, which can help with movement and provide a waterproofing layer. Use a rubber mallet to gently tap the tiles into place, ensuring they are level and evenly set. [/QUOTE]
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Large Format Outdoor tiles advice.
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