How to Build a Laundry Room

Many handymen and women have the knowledge and skill to complete home renovations with ease, a laundry room is no exception for those with expertise in plumbing and electrical work. The major projects include the plumbing for portable washing machine and sink components, and installing a vent for the dryer. The most important thing to note are the building codes and safety components associated with the job.

This blog will walk you through the basics of laundry room installation and provide a list of needed materials to get started. Follow along before tackling it on your own!

For a total list of tools and materials, click here!

After getting up to speed on codes and regulations, some prep work is necessary prior to assembly. First, you want to ensure that the area is emptied out and cleaned up. Appropriate flooring should be installed or updated to ensure water resistance and load bearing. Next, inspect water lines and potential paths for electrical, plumbing, and ventilation. Once you know the space allowance and available pathways, measure your potential washer and dryer units to make sure they will fit. Check floor, wall, and ceiling clearance and mark necessary spaces for rough in.

Next, map out and dry fit all pipe runs. Horizontal pipes should slope toward drain line of ¼” per running foot. You want to mark where the existing drain lines are, so you can make all necessary fittings for washer, sink drain, and vent lines prior to cutting. Afterwards, you will prime, glue, and assemble parts of the pipe run. Remember to include a p-trap for sink and washer!

Before running the hot and cold water to the washer and sink, shut off the main supply. Choose the space that’s midway between your washer and sink and install tee fitting for each pipe. Additional hardware will be needed for finishing. Then, run your water supply to the washing machine box and shut off the valve.

For the dryer, you will need to install a 120/240V 4 prong wall outlet. Make sure to identify the requirements of your specific model and determine the length of electrical cable you need. You can then begin forming the connection between the dryer and electrical panel. You will need to designate a new breaker for the machine as well. Ensure power is off during all wiring for safety.

Your washer will require a GFCI receptacle for the electrical. The wiring is similar with the added benefit of a safety shut off in case the line shorts. Be sure to measure the length of the cord and wiring to install appropriately.

To ensure the proper transport of heat and moisture to the outside, in-house designers and  consultants will suggest you install the dryer vent next. Plan your dryer ventilation path and select non-combustible, non-corrosive metals for use. Strive for a direct path to the exterior of your home. In addition, it will need to exit a foot from the ground to prevent obstruction. Don’t forget about the exterior flapper, which will allow for proper airflow and prevent anything from entering your home at the site.

Now that your wiring, piping, and plumbing is complete, you can add the finishing touches like drywall, flooring, and a fresh coat of paint!

Once the finishing have set, place the washing machine in its space and attach the drain hose to the stand pipe, hot and cold water lines to the stop valves, and check for water flow. Repeat the process by placing the dryer in its place, connect the dryer outlet via metal elbow, and attach it to the ventilation system.

Finally, position your sink and any cabinets. Attach water lines and shut off valves.

When you are finished, check to see that everything is functional. Make sure to do a test load of laundry while you are home to watch for any errors that could cause flooding or fires. Remember, if anything becomes too complex to call a professional! It’s better to do the job right the first time!

Author Bio

Margaret Perron is an appliance repair do-it-yourselfer, home solutions enthusiast and a home maker. With over 10 years experience in the home improvement business she is well suited to advise you on the best solution for identifying and locating the best home services in your area. You can follow her at Google+.


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