 There's no mortar, no mixing, and no mess. Simple Mat is a strong adhesive mat that instantly and permanently bonds tile to your wall. Then immediately grout with pre-mixed Simple Grout so your project can be completed in one day. Find Simple Mat and Simple Grout at Home Depot and HomeDepot.com. Learn more at The Simple Mat. For eligible individuals 18 and older only, results vary. See website for details and important safety information. How are you hearing 8 sounding now? A little tinny. Okay, two seconds.