If you have expansion joints cut into the existing slab ... After a few days of curing, you can apply a concrete sealer if you’d like to protect the slab from oil and other stains.

We put eight caulks and sealants to the test in our labs—we evaluated cure time, durability, adhesion, and more I’m a renter so I’ve never had to caulk a bathtub or seal a joint in concrete, but I’ve ...