DSC_0038.jpg' alt='How To Install Wonderboard On Subfloor Adhesive' title='How To Install Wonderboard On Subfloor Adhesive' />The FloorElf describes the proper method of installing cement or cementious backerboards on a floor for tile installation. Find answers to your questions about our topquality building products, great customer service, and expert technical support to contractors, architects, designers. Our basement radiant heated flooring install required us to pour a selfleveling underlayment aka selfleveling mortar or selfleveling cement over our ThermoTile. Self Leveling Underlayments Achieving Level. March 5, 2. 00. 8 by Fred email This article was originally published in 2. I have aggregated all of the articles from our Self Leveling project into a new, more complete article with links to each of the individual articles, including the one below. Complete article How to Pour Self Leveler Over a Large AreaOur basement radiant heated flooring install required us to pour a self leveling underlayment aka self leveling mortar or self leveling cement over our Thermo. Download Fishing Superstar Mod Offline Apk Mod. Tile radiant heating wire to achieve a level surface for tiling. Ill say up front, our results were not perfect, but I dont think it is the fault of the product. Read further for details. Our Choice Level. Quik ESWe chose Customs Level. Quik ES for the job. Level. Quik ES is an extended setting SLU that provides 1. It can be poured up to 2 thick and feather edged to less than 11. If youve never seen an SLU in action, it is truly amazing. SLUs go on with the consistency of pancake batter, and harden to bear as much as 4. They are truly a marvel of modern technology. That said, they dont always come out perfectly level at least, not if you dontor cantfollow the instructions exactly. How Can You Ensure a Level Pour There is a dearth of information available about how to achieve a perfectly flat, level pour with an SLU, particularly if you are pouring over a fragile surface like one covered with heating wire. I was able to find a little bit digging around on the net and I also met with a local concrete contractor to discuss the job. Heres what I learned 1. Always follow the directions on the bag. I cannot stress this enough. SLUs that are improperly mixed or installed can delaminate from the surface, cure to an unleveluneven surface, or lead to weak bonds with the flooring installed on top of them. E. g. Level. Quik RS ES require the use of a latex primer that is essential to a strong bond. Use a gauge spreader. Achieving a very level floor requires dragging a gauge spreader across the pour. Since we are pouring SLU over an electric heating element, a gauge spreader would present risks of either pulling up the wire or accidentally cutting it both of which are unacceptable in this application. Update on 62. Instead, we tried a few ideas and eventually landed on this idea to modify a squeegee to spread the mortar evenly. The results in subsequent  pours were considerably better than what youll read below. Pour at least 38, and preferably 12 or more. Pours that are less than 12 tend to not level as well as pours greater than 12. Pouring SLU into a floor area is similar to pouring pancake batter into a frying pan. Before the batter completely fills the pan, it will be unlevel unless you purposefully spread it out. As the batter fills up the pan completely, the entire surface tends to level out. Our Method Pictures. Due to the heating wire and cost constraints, we couldnt meet s 2 3 above, but we still decided to use Level. Quik ES for the job. We poured the SLU into the framed area and spread it out with a large squeegee. The results were good, but not perfect, with as much as 51. The next two pictures show a 31. This is primarily caused by a crown in the floor near the middleright of the level. These two pictures show a 51. Click on the pictures to see larger versions.