![]() Because it is only 1/4 inch thick, it is usually Hardibacker (James Hardie Building Products), is made ofįiber-cement. When used on floors and other applications subject to Inherent strength, it relies on the structure beneath for stiffness Moisture pass through, so it should always be backed byĪ waterproof barrier, such as polyethylene sheeting or Cementīackerboard is impervious to moisture, but may let Made of sand and cement and are reinforced by fiberglassįacings or chopped fibers within the material itself. Under ceramic tile, cementitious backer units (CBUs) are 6-32 shown below, employs two layers of plywood for a more rigid subfloor design. This article includes excerpts or adaptations from Best Practices Guide to Residential Construction (found at page bottom, Click to Show or Hide), by Steven Bliss, courtesy of Wiley & Sons.įigure 6-34 (above) shows one layer of plywood with cement backerboard beneath a tile floor installation. A list of kitchen and bath product manufactures and sources is included. ![]() ![]() We include advice on choosing and installing kitchen countertops, cabinets, and kitchen or bathroom flooring, sinks, and other plumbing fixtures and fixture controls such as faucets. This article series discusses current best design practices for kitchens and bathrooms, including layout, clearances, work space, and accessible kitchen and bathroom layout, clearances, turning space, grab bars, controls, etc. Cement Backerboard for Use Under Ceramic Tile: Installation Specifications ![]() We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. ![]() We address the installation details for each of these material types. This article discusses the types and installation details for backer boards used below ceramic tiles for countertops and splashboards, including cement backerboard, drywall, greenboard, and glass-mat gypsum backerboards. Tile backers: cement board, green board, other products: We have no relationship with advertisers, products, or services discussed at this website. InspectAPedia tolerates no conflicts of interest. ![]()
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