Kitchen Sink Installation Service
Call Now (855) 557-9600
Kitchen sink installation removes the existing basin, prepares and seals the countertop opening, and assembles the full supply and drain stack — so the new sink sits flush, drains cleanly, and doesn’t seep water into the cabinet below. Bonded Plumbworks’ licensed plumbers connect shut-off valves, set P-trap geometry for proper drainage slope, and pressure-test every supply joint before signing off — for drop-in, undermount, farmhouse, and integrated sink styles in all countertop materials.
Kitchen sink installation is a plumbing service that includes removing an existing sink (if applicable), mounting a new sink in or under the countertop, connecting hot and cold water supply lines, assembling the drain system including strainer, tailpiece, P-trap, and waste arm, and verifying leak-free operation. Professional installation ensures proper sealing, drainage slope, and code-compliant connections. — Bonded Plumbworks
What Is Kitchen Sink Installation
Kitchen sink installation is the process of mounting a new sink into a countertop and connecting it to the home’s water supply and drain systems. Kitchen sinks are manufactured in stainless steel, composite granite, fireclay, cast iron, and copper. Each material has different weight, mounting requirements, and sealing methods. Sink mounting styles affect installation complexity: top-mount sinks rest on the countertop surface, undermount sinks are attached below the countertop, and farmhouse sinks extend forward of the cabinet face.
The National Kitchen and Bath Association (NKBA) recommends undermount sinks for granite, quartz, and solid surface countertops because they simplify countertop cleaning and eliminate the crevice where bacteria collect under a top-mount rim. Undermount installation requires structural clips and adhesive support that must be properly rated for the sink’s filled weight. — Bonded Plumbworks, serving homeowners since 2006
A standard double-bowl kitchen sink requires two drain assemblies, a continuous waste connecting both bowls to a single P-trap, and hot and cold supply lines with individual shut-off valves.
When to Schedule Kitchen Sink Installation
Contact Bonded Plumbworks for kitchen sink installation when:
- You are replacing a damaged, stained, or outdated kitchen sink
- You are upgrading from a single-bowl to a double-bowl or oversized single-bowl sink
- You are installing a new countertop and need the sink mounted and connected
- You are changing sink styles (e.g., top-mount to undermount or to farmhouse)
- Your current sink has persistent leaks at the mounting seal or drain connections
- You are remodeling your kitchen and want new fixtures
Changing sink styles may require countertop modifications. A switch from top-mount to undermount requires polishing the cut edge of the countertop opening. A farmhouse sink requires cabinet face frame modification. Bonded Plumbworks coordinates with your countertop fabricator and cabinet installer as needed.
How Kitchen Sink Installation Works
Step 1: Old Sink Removal. We disconnect the water supply lines, drain connections, garbage disposal, and dishwasher drain. The sink mounting clips or adhesive are released, and the old sink is carefully removed without damaging the countertop.
Step 2: Surface Preparation. We clean the mounting surface, remove old sealant or adhesive, and verify the countertop opening dimensions match the new sink. For undermount installations, we verify the support clip positions and prepare adhesive surfaces.
Step 3: Sink Mounting. Top-mount sinks are set with a bead of silicone sealant and secured with mounting clips from below. Undermount sinks are supported by structural clips attached to the underside of the countertop and sealed with silicone adhesive. Farmhouse sinks rest on a modified cabinet base frame.
Step 4: Drain Assembly. We install basket strainers in each drain opening, assemble the tailpieces, connect the continuous waste (for double-bowl sinks), and install the P-trap with proper slope toward the wall drain connection.
Step 5: Supply Line Connection. We connect new braided stainless steel supply lines from the hot and cold shut-off valves to the faucet. If shut-off valves are missing, corroded, or non-functional, we replace them during the installation.
Step 6: Faucet and Accessory Installation. We mount the faucet, sprayer, soap dispenser, and any other accessories through the sink or countertop mounting holes. All connections are tightened to manufacturer specifications.
Step 7: Testing. We run hot and cold water, fill and drain both bowls, and inspect every connection point for leaks. We check drain flow rate and verify the garbage disposal and dishwasher drain connections function correctly. Kitchen Sink Installation inspection gives you a live view of the problem before any work starts. You review the findings and approve the quote before any repair begins.
In many homes, kitchen sink installation also involves addressing tap (valve) for a fully integrated solution.
Plumber’s putty remains the standard sealant for basket strainer installations in stainless steel sinks. For composite, granite, and natural stone sinks, silicone sealant is required because plumber’s putty can stain porous materials. Using the wrong sealant for the sink material can cause permanent discoloration. — Bonded Plumbworks
Benefits vs. Alternatives
Professional kitchen sink installation ensures watertight sealing, proper drainage slope, and code-compliant connections that protect against water damage. An improperly sealed sink allows water to penetrate between the sink and countertop, damaging the countertop substrate, cabinet, and flooring. Improper drain assembly causes slow drainage and leak-prone connections that go unnoticed until damage occurs.
Professional installation also ensures that shut-off valves, supply lines, and drain components are current and reliable. Many older kitchens have corroded shut-off valves that do not close fully and supply lines that should be replaced.
Pricing
Kitchen sink installation typically ranges from $300 to $700 for a standard replacement (same style, same location). Installations requiring countertop modifications, style changes, or significant drain reconfiguration range from $600 to $1,200. The sink and faucet are purchased separately by the homeowner. Bonded Plumbworks provides a written estimate after assessing the installation.
Our Qualifications
Bonded Plumbworks plumbers hold active state plumbing licenses and have installed thousands of kitchen sinks since 2006. We work with all sink materials and mounting styles, and we coordinate with countertop fabricators and cabinet installers for seamless integration. We are members of the Plumbing-Heating-Cooling Contractors Association (PHCC).
FAQ
How long does kitchen sink installation take? A standard replacement installation takes 2 to 3 hours including old sink removal, new sink mounting, and all connections. Installations involving style changes or countertop modifications may take half a day.
Can I change from a top-mount sink to undermount? Yes, if your countertop material supports undermount installation (granite, quartz, solid surface, and concrete countertops all support undermount mounting). Laminate countertops generally cannot support undermount sinks. The cutout edge must be polished, which your countertop fabricator can handle.
How much does kitchen sink installation cost? Kitchen sink installation typically costs $300 to $700 for most residential jobs. The final price depends on the scope of work, materials required, and site conditions. Bonded Plumbworks provides a written estimate before any kitchen sink installation work begins, so you know the exact cost upfront with no surprises.
Should I replace my shut-off valves during sink installation? We strongly recommend it if your valves are more than 15 years old or do not close fully. A failed shut-off valve during a future emergency can cause extensive water damage. Replacing valves during installation is quick and inexpensive compared to a standalone service call.
Back to Kitchen Plumbing
Schedule Your Kitchen Sink Installation
Upgrade the centerpiece of your kitchen with a professionally installed sink. Call Bonded Plumbworks at (855) 557-9600 to schedule kitchen sink installation. We handle every connection, from supply lines to drain assembly, and test everything before we leave. Every kitchen sink installation service includes a 90-day guarantee on kitchen sink installation work, covering parts and labor.