Latex caulk, also known as acrylic-latex caulk, is suitable for some tile applications, like securing loose tiles. Silicone caulk, sometimes called silicone sealant, is highly durable. There are different formulations of silicone caulk, each with its own unique advantages. The proper type of silicone caulk for your project will depend on the area of use and the user's experience in applying caulk, especially if you plan to DIY your tile job. Siliconized acrylic latex is like a happy medium between pure silicone and ordinary latex caulk.