![]() Market Research for Exporting to the U.S.Litigation and Insurance Claims Investigation Services.does those types of forensic investigations, but it may or may not be practical for you to utilize our services as it can cost $3,000 or more for an inspection. The only way to determine if the installation was done correctly is to intrusively remove and document sections to see how it was constructed. Wet areas should have some sort of waterproofing over properly sloped to drain surfaces for floors, and moisture barriers on walls. The backer board should be installed in a staggered pattern and fastened every 8" in each direction. Generally the recommendation is to adhere the backer board to the wood subfloor with an appropriate thin-set mortar (ANSI A118.11 thin-set) and to screw or nail the backer board into the plywood subfloor. So you should look at the Hardibacker data sheet from the manufacturer for their installation recommendations. The ANSI standards are recommendations and they always say that the manufacturers' directions supersede their recommendations. Technically Hardibacker board is a fiber cement board, but the installation methods are the same. This shower is a large wet room with multiple grading changes.ANSWER ANSWER - There is an ANSI A108.11 for the installation of cementitious backer board. In this picture the top collar of the clamping drain is not set. Set Project Zip Code Enter the Zip Code for the location where labor is hired and materials purchased. Actual costs will depend on job size, conditions, and options. The NobleFlex Flashing is showing with the grey colour. For a basic project in zip code 47474 with 120 square feet, the cost to Install Backer Board starts at 7.83 - 10.06 per square foot. This shower was later waterproofed with Aqua Defence. Here is an example of a NobleFLex Flashing (Divot Style) shower pan being built. A liquid waterproofing shower floors is not my favourite approach but with time for curing and proper coverage it can be done. My private photo bucket albums have hundreds of pictures showcasing various waterproofing steps. I would like to see the reinforcing mesh used at all changes in plane. Then re-apply Redgard over the flashing and up the walls and curb. I would prepare a new pre-slope tile prep stage with 3701 and a NobleFlex Flashing. He said he was going to add some wood support from under via crawlspace and then seal all the corners/gaps we see in shower floor by thinset/cement." RED FLAG - this should have been done first. "My biggest concern as you will see in the images is around the shower drain the hole in subfloor is not even sealed properly and I can clearly see into crawlspace. All showers require a pre-slope of 1/4" per foot. There was also no talk of flood/shower testing." RED FLAG. "Upon questioning this morning he said he'd install a liner if we want but it's not necessary due to red guard and tiled floor, which I find hard to believe. ![]()
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