10 Steps to Install Kitchen Sink Plumbing
Most homeowners focus on the fridges, flooring, and marble countertops when thinking about kitchen upgrades, but one of the most overlooked parts is the sink. A shiny sink together with newly installed faucets can create a big difference in your kitchen for a considerably less amount of money. The good thing about sink upgrades is that you can install the sink plumbing on your own. Although the installation process is pretty straightforward, the ease of the task will depend on the sink’s size and weight. The enamel sink can be pretty heavy, and you might need someone to assist you in lifting. Follow the steps below to install your kitchen sink plumbing.
1. Turn Off the Water Supply
Before you start working on your sink, turn off the water supply to the kitchen. Look for the shut-off valve under the sink, and if you can’t see it, you will have to shut the water supply to the entire house.
2. Disconnect the Sink Plumbing
Take a picture of the under-sink plumbing connection since you might need to reference this during reconnecting. Next, disconnect the supply and drain pipes and keep a bucket underneath to catch the water that may come out of the lines. Remember also to remove the dishwasher drain line. If you have a garbage disposal unit under the sink, disconnect it as well. Detach the tap on the sink by loosening the nuts and pulling it out.
3. Remove Your Old Sink and Fit in the New One
Once you disconnect all the lines, unscrew the metal clips mount under the sink. Use a utility knife to cut the caulk around the sink. If you have a top-mounted sink, the caulk is at the top, where the wider part meets the counter. For the under-mount sink, check near the metal clips. Now take off the old sink and clean up the worktop.
Place the new sink over the countertop opening to see if it fits. You can use a jigsaw to create a new cut-out on the countertop for a sink with a larger dimension. If the sink is too small, you may want to call a professional to make the necessary adjustments and ensure that your sink fits perfectly. If the measurements are fine, turn over the sink, apply the water-resistant caulk in the broader part, then flip it back into position. Wipe off any excess caulking, attach metal sink clips, and tighten them to hold the sink in place.
4. Install Kitchen Faucet
Clean the surface where you had installed your previous kitchen tap. Set the deck plate over the faucet hole, and you can use either caulking or plumber putty to hold it into position. Push the faucet line through the hole, install a washer and nut under the sink, and tighten the connections. Connect the water supply line and use plumber’s tape, if necessary, to prevent leaks.
5. Check the Outlet Height of Your Drain
If you want to install a sink with a deeper basin than your previous one, you will have to lower the drain fitting to match the new sink’s height. Note that if your sink hangs too low, it will leave insufficient room for the drain outlets. Keep in mind that you will also need to leave enough space to remove and clean the p-trap when need be.
Ensure that you measure the height of the trap arm, which is the distance from the floor to the center before you install a new sink. If the existing drain opening doesn’t accommodate the new sink’s depth, it might not drain properly. Call a professional to open the wall and make the required adjustments.
6. Install the Garbage Disposal
Refer to the photo you took in step two to see where the garbage disposal unit fits in. You can still check the manufacturer’s manual. Insert the discharge pipe over the bottom of the drain and use a fastener to hold it in place.
7. Attach the Tailpiece and Waste Pipe
The tailpiece is a vertical pipe dropping from the sink to the drain fittings while the waste pipe runs to your home’s sewer line. You need to cut these pipes to the desired length for proper installation. Begin by temporarily fitting the tailpiece to the strainer, then push the bent part of the waste pipe into the garbage disposal’s drain opening. You can hold the lines in place by using a slip nut and washer. Pull out the straight part of the pipe, and it should slope moderately past the tailpiece.
Hold both the tailpiece and waste pipe to the tee fitting, then cut the pipes to the desired length. Reinstall the waste pipe and the tailpiece along with the tee and create a tight connection. Fasten the slip nuts but don’t make them overly tight to avoid damaging the plastic threads.
8. Fit the Drain Trap
You now need to install the drain trap, which has a p-shaped bend and a J-shaped arm. Attach the p-trap below the tailpiece and then connect the trap arm to the sanitary tee at the wall. Assembling the p-trap and bend loosely to see if they fit. If any piece seems too large to fit into their respective spaces, you can cut them then reinstall. Ensure that the trap arm slopes slightly downwards towards the tee, then tighten the slip nuts.
9. Attach Dishwasher Drain
Refer to the manufacturer’s instructions on the dishwasher’s drain installation. The process involves attaching the dishwasher hose into the waste nib of the tailpiece. Tighten the hose clamp with a screwdriver to hold it in place.
10. Reconnect Your Water Supply Lines and Check for Leaks
Once you complete the installation, turn on the water supply to test your work. Look for any leaks at all connections along the supply and drain lines. If you spot leaks, tighten the joints but if this fails to work, take out the nuts, try repositioning the washer, then retighten. Ensure also that the sink edges are parallel to the countertop’s edges. Next, fill the sink with water to see if it drains smoothly.
Seek Professional Help for Your Kitchen Sink Plumbing
While doing sink installation, you need to make adequately tight connections to prevent leaks. The process also involves removing the old plumbing, cutting and replacing the old drain pipes. If the procedure seems somewhat challenging and complex, you can seek professional assistance. An experienced plumber has the right skills, tools, and knowledge to make a safe and efficient installation. They can also spot underlying issues within your plumbing system and fix them to prevent further problems in the future. The kitchen sink plumbing will need regular maintenance to keep it in proper working condition. Have a technician check your plumbing often to ensure that they work effectively.
If you need professional help with plumbing installation, reach out to We Care Plumbing, Heating, and Air. Our company deals with drain cleaning, re-piping, garbage disposals, water heater, toilet repairs, and installation services. We also offer air purification, humidity control, heating, cooling systems installation, repair, and maintenance services in Murrieta, CA, and the nearby areas. Get in touch with us and request any of our services.