b'ASK THE EXPERTSforexamplewhetherthereisaIdwanttoknowmorebefore specrequiringthetiletomeetmakingchanges,justtobesurer A137.1,orifthemanufacturerabout the root cause. For me, that claimsconformancetoit.Therewould influence whether the addi-are enough instances where thesetional cost of improving the look thingsarenotthecase.Testingis something that could/should be costsmoney,andthereisnotcharged for.muchreasontohaveitdoneifId be really interested in know-meeting the standard isnt some- ing more about these tiles or get-howexpresslyrequiredintheting a box. If they truly meet stan-firstplace.Whenconformancedardsbutaretakingsignificantly to A137.1 *is* required, there aremore effort labor-wise, and this is also sampling and lot acceptancehappeningmoreandmore,that criteria in the standard that allowwouldbesomethingtopossibly for some of the tile to be outsidetrytoaddressinthestandards thetolerances.Itsnotahugearena. It could be a PSA for con-amount, but just mentioning it. tractors, or for GCs, given to them I agree with Robbs suggestionsby contractors. onlookingforasubstituteor Stephanie Samulski,changing the grout-joint size. ButNTCA Technical DirectorThe 2019-20 NTCA Reference Manual is now available!ORDER YOURS TODAY!The NTCA Reference Manual identies recurring installation challenges, recognizes potential problems, and offers expert solutions. Available in print and downloadable PDF. Visit www.tile-assn.com.28TileLetter | February 2020'