Most bathroom faucets are separated into two main categories: deck-mounted versus wall-mounted. These two kinds of faucets determine what surface your faucet is designed to rest on. Deck-mounted faucets are supposed to be installed on the countertop or sink surface while wall-mounted faucets are installed into the wall and hang over the sink bowl. Many faucets aren’t designed for both configurations, so knowing which surfaces are possibilities for faucet installation is important. Some countertop materials may not pair well with certain kinds of sinks or faucets either, making your faucet installation more difficult or even impossible! You don’t want to purchase a faucet and then find out it can’t be installed where you envisioned it!