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Sink Repair FAQs, answered by experts

Silicone caulk—despite having some adhesive properties—is not the primary thing that holds your sink in place. Rather, it seals the gaps around the sink to prevent water from leaking and causing issues with mold and corrosion. Most sinks are secured by clips, though some sinks are secured with two-part epoxy or brackets.

Pop-up drains come in various sizes, including 1.25", 1.5" and 1.625". Choose a drain the same size or smaller than the hole in your sink.

The time it takes to install a sink depends on whether you hire a professional or do it yourself, as well as the complexity of the job. A professional plumber can typically install a sink in 1 to 4 hours, with most routine jobs taking around 1 to 2 hours. However, more complicated installations will take longer. Projects that involve rerouting plumbing, installing an under-mount sink, or making countertop modifications can take a full day. Installing a sink with a prefab vanity could also stretch the project to 6 to 8 hours. If you plan to install the sink yourself, you should set aside 4 to 6 hours, though it could take longer. It's also recommended to have a friend help, especially if you are working with a heavy sink made of a material like porcelain.

Yes, you can install a farmhouse sink on an existing countertop—but there are some caveats. You’ll need to precisely measure. It’s best to choose a sink that’s the same dimensions as your existing sink, since your contractor won’t have to cut the countertop. Otherwise, pay close attention to the depth of your counter (the front to back measurement). You don’t want to install something that’s so big it sticks out beyond your countertop and cabinetry.

Yes, a toilet, sink, and shower can share the same vent. This is a common installation method that can simplify plumbing and save space. However, there are important considerations. The vent and associated plumbing must be large enough to handle the demands of all fixtures without compromising the vent's effectiveness. Additionally, the toilet should always be located downstream of all other fixtures. Because requirements can vary and space might be limited, it is essential to check your local building and plumbing codes and consult with a qualified plumber to ensure the installation is done correctly.

The Sappington, MO homeowners’ guide to sink repair services

From average costs to expert advice, get all the answers you need to get your job done.