Sink Installation in Southeast Wisconsin
Stained, leaking, or outdated sink? Our licensed plumbers install kitchen, bath, and utility sinks with watertight precision — most jobs done in one visit.
Is Your Old Sink Stained, Leaking, or Just Not Working for Your Household?
A sink that's past its prime makes itself known: deep scratches and mineral stains that no amount of scrubbing fixes, water pooling in the cabinet below, a basin that's worked loose from the countertop, or simply a fixture too small and shallow for the way your family actually cooks and cleans. O'Leary Plumbing, Heating & Electrical has installed kitchen, bathroom, and utility sinks across Southeast Wisconsin since 1958, and our licensed plumbers make the upgrade clean, precise, and permanent.
How Do You Know It's Time to Replace a Sink?
Some signs are obvious and some hide under the cabinet. Watch for deep scratches or persistent staining that makes the surface impossible to keep sanitary; water regularly collecting on the cabinet floor beneath the drain or supply lines; a basin pulling away from the countertop; rust forming around mounting clips or faucet holes; and chronic drainage problems centered on one fixture. In this region there's an added factor: Southeast Wisconsin's hard water is rough on fixtures, building limescale around connections and slowly corroding seals years ahead of schedule.
Acting early matters because a failing sink rarely fails alone. Moisture seeping past a bad seal rots cabinetry and countertops from below, and a slow drip can quietly do structural damage long before you see it. If you're noticing dampness without an obvious source, our leak detection team can pinpoint it before the repair bill grows.
What Kinds of Sinks Do We Install?
All of them — in kitchens, bathrooms, laundry rooms, workshops, and bars. In kitchens we regularly set single and double-bowl models in stainless, composite, and cast iron, including undermount and farmhouse styles, and we connect drains, supply lines, dishwashers, and garbage disposals as part of the job. In bathrooms we install vanity, pedestal, vessel, and wall-hung sinks, paying close attention to how the sink, faucet, and drain share a tight space. Utility and laundry sinks get sturdy mounting and reliable drainage suited to hard use.
One honest note from long experience: undermount sinks need a solid-surface countertop like granite or quartz for proper support. If your counters are laminate, a quality drop-in model is the right call, and we'll tell you so before you buy the wrong fixture. If you're pairing the new sink with a new faucet — usually worth doing while everything is apart — our fixture and faucet installation service covers the complete setup in the same visit.
What Does Our Installation Process Look Like?
Every installation starts with an assessment of what's already there. We measure the countertop opening and cabinet, then inspect the supply lines, shutoff valves, and drain — because a brand-new sink connected to corroded lines and a sticking valve is a problem waiting to happen. When we find aging components, we show you and explain the options; you decide how far to go.
From there the work is methodical: remove the old fixture, clean and prep the surface for a strong seal, set the new sink with the correct hardware and quality sealants, align and connect supply lines, drains, and accessories like disposals, and finish with a full leak and pressure test. If your project includes a new or relocated garbage disposal, we handle that in the same visit. Most straightforward replacements take two to four hours; projects involving countertop modifications or rerouted plumbing take longer, and we'll tell you which yours is before we start.
What Will a Sink Installation Cost?
It depends on three things: whether the new sink matches the old footprint or the opening needs modification, the condition of the existing drain and supply plumbing, and the fixture itself. Rather than guess, we provide free installation estimates — a plumber looks at the actual job, walks through your fixture options and any recommended plumbing updates, and gives you a clear picture for budgeting. For larger projects that bundle a sink with other plumbing improvements, financing options are available, and our office team can walk you through them.
Why Trust O'Leary With Your Kitchen or Bath?
Because we've been setting fixtures in this region's homes for three generations. Our technicians are licensed, bonded, and insured, we respect your home while we work, and we stand behind every installation after the truck pulls away. We also see the bigger picture a fixture swap can reveal: if chronic clogs around the old sink point to a deeper drain problem, our drain cleaning team can solve the cause instead of leaving it for the new sink to inherit. One company, accountable for the whole job — that's how we've done it since 1958.
Frequently Asked Questions About Sink Installation
Can I put an undermount sink on laminate countertops?
Generally no — undermount sinks need the rigid support of a solid surface like granite or quartz. For laminate counters, a quality drop-in model is the safe, lasting choice. We'll confirm what your countertop can support before you purchase a fixture.
Should I replace my garbage disposal when I replace the sink?
It's not required, but if the disposal is more than a few years old it's often the smart moment — the drain assembly is already apart, so a new unit goes in with fresh, secure connections at no extra labor beyond the unit itself.
How does hard water affect a new sink and faucet?
Southeast Wisconsin's mineral-heavy water builds scale around aerators, drains, and faucet connections faster than most of the country, which shortens fixture life. Regular cleaning helps; treating the water helps more. Ask us about softening options during your estimate if scale has been eating your fixtures.
How long does a sink installation take?
Most standard replacements take two to four hours, including removal, surface prep, and new connections. Countertop modifications or relocated plumbing add time, and we'll tell you before work starts, not after.
Do you install customer-supplied sinks?
Yes. Whether you've already purchased a fixture or want recommendations, we'll verify the fit against your countertop opening and plumbing before installation day so there are no surprises.
Schedule Your Sink Installation Today
If an active leak has you mopping the cabinet floor, our emergency line answers 24/7. For everything else, request service online or call O'Leary Plumbing, Heating & Electrical at (262) 642-7747 for a free sink installation estimate anywhere in Southeast Wisconsin.
One call for every essential system.
Call O'Leary or request service online and a real team member will help you schedule. Free installation estimates and 24/7 emergency service across East Troy, WI and the surrounding lake country.