How Thick Should Thin Set Be Applied


Recommended for Most Jobs

  • For most tile installation, it is necessary to apply a 1/4- to 3/8-inch layer of thinset before you position your tile. You normally apply this layer of thinset, the adhesive used to set tile in place, with a square notch trowel.

Following Manufacturer's Instructions

  • Although 1/4 inch to 3/8 inch is the typical thickness of thinset application, some specific products may require more or less. You should follow the application guidelines of the specific product you are using.

Bottom Line

  • If you are unsure of exactly how much thinset you should apply, 1/4 to 3/8 inch is good guide. However, it is a good idea to check the manufacturer's directions and follow that when possible.

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  • Photo Credit Tiled floor image by Simon Amberly from
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