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How to Put in a Laminate Kitchen Countertop

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Give Your Kitchen a Fast Face-life with a Pre-fabricated Countertop in an Updated Color with a New Sink

Take a day for a DIY project to update your kitchen with a new countertop and sink. This custom-ordered countertop comes from the factory pre-fabricated and laminated in the specified color and providing a partial cut-out for a designated sink size and configuration. Just remove the old sink and countertop and follow a few easy steps to install the new components.

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removing the P-trap beneath the kitchen countertop and sink
Step 1

Disconnect the Water Supply Lines and Drain Pipes

Shut off both water valves under the kitchen countertop directly beneath the sink. Put a tray under the piping to catch residual water and then disconnect hot and cold water lines and the drain's P-trap.

loosening fasteners beneath the kitchen countertop
Step 2

Loosen Fasteners and Remove the Countertop and Sink Unit

Remove screws and blocks that secure the old countertop. Use a utility knife to cut caulking at the backsplash and a pry bar and putty knife to loosen the countertop. Remove the countertop and sink as a unit.

comparing the sink template with the kitchen countertop cutout
Step 3

Confirm the Size and Shape for the Pre-made Sink Cutout

Bring in the new pre-fabricated kitchen countertop and confirm that the sink cutout is the right size and shape for the new sink. Cut the cardboard sink template from the sink packing box and compare it to the countertop cutout.

supporting the cutout while cutting it with a jigsaw
Step 4

Support the Cutout and Finish Cutting It with a Jigsaw

Use a jigsaw to finish sawing out the cutout. Screw some scrap lath strips into the top of the cutout--not into the countertop--to support the cutout while finishing the cut.

setting the new kitchen countertop in place
Step 5

Position the New Laminated Kitchen Countertop

Set the kitchen countertop in place on the base cabinets. Helpers make the unwieldy countertop easier to handle. Secure the countertop to the cabinet base with wood screws and blocks in the same way that the original unit was attached.

installing the tap and faucet fixture
Step 6

Apply Plumber's Putty and Install Sink Fixtures

Apply plumber’s putty to drain cutouts, working from the upper side of the sink. Insert and tighten each sink basket against the putty to make waterproof seals. Repeat the process to install the tap and faucet fixture. Clear excess putty.

dropping the sink into the kitchen countertop cutout
Step 7

Apply Waterproof Sealant and Position the Sink in the Countertop

Apply a bead of silicon sealant around the sink’s lip to ensure a watertight bond. Position the sink over the countertop cutout and drop it into place. Clean off excess sealant to make a neat seal.

attaching the drain pipes beneath the kitchen counter and sink
Step 8

Attach the New Sink, Water Lines and Drain Components

Secure the sink to the counter. Attach both waterlines beneath the new sink. Apply pipe thread compound to the connecting threads on the drain components and tighten the compression nuts. Restart the hot- and cold-water supplies.

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