b'TECHNICAL theirlayouts. Trowelingcanusuallynotallthesame.Somemaybe occur in six hours.limitedtocertaintypesofsub-strates,orlimitedinthicknessor take longer to dry. Use the product recommendedforyourapplica-tion. Consult the technical person of the manufacturer of your choice. And since SLUs are very fl owable, besuretocloseoffallopenings before you begin pouring. TOOLS:Someessentialtools SLUORTROWELGRADEmakeselflevelingeasierand PATCH: Sometimes a trowel grademoreeffi cient. Twopopulartools patchisallthatsneeded.Otherdesignedtoplaceandbreakthe times,patchingwilltakeplacesurfacetensionwhenusingself before self leveling to fi x cracks orlevelers are:spalls in the concrete. Thespreaderthecleatson bottom allow for adjustments to determine how much material is applied to the fl oor. Thespikerollerbreaksthesur-face tension. Figureoutifyouneed1/8or lesstoremedytheout-of-lane substrate. If its less than 1/8, use a trowel grade on smaller jobs, and for larger jobs, use a high-fl ow SLU or patch. If your substrate is more than 1/8 out of grade, use a SLU.RADIANTHEATING:Selflevel-SLUs have exceptionally high fl owers are the best way to encapsulate and will heal even when installed at thin applications. Doyouneedaslope?Ifthe slopeisgreaterthan2%,usea trowelgradematerial,andusea self-leveler if less than a 2% slope is needed. Know your self leveler! They are 98 TileLetter | May 2020'