Hi Dog, Welcome!
Feel free to sign up and register. It's good to know you can still do something for free with no hitches!
If you aren't familiar with the boards here, we usually try to pry a first name out of you!
In answer to your question, depends on the sealer, type and quantity of tile. For large areas of porous tile, I like to use a pump sprayer. I've also used lambs wool applicators, rollers, and paint brushes. With the newer water based sealers, string mops and sponges can be used.
What do you have in mind? Have you selected a sealer yet?
