Step 6 · Mount the New Faucet
Consult the manufacturer's instructions for your new faucet. Typically, you will either place the included rubber or plastic gasket onto the base of the new faucet components or apply a soft rope of plumber's putty around the base. Insert the new spout and handles into the holes on the tub deck. From underneath, slide on any included washers and thread the new mounting nuts. Hand-tighten the nuts first, ensuring the faucet is properly aligned on top, then use your basin wrench or the tool provided to give them a final quarter- to half-turn to secure them. Do not overtighten.