Home appliances sometimes create a lot of noise. This happens when we run them, or perhaps when they run themselves. This can be quite annoying.

Let’s soundproof a dishwasher: We’ll do this in a series of steps, each accomplishing a higher level of dishwasher sound reduction. This means we may need full access to all parts of the unit and it makes a difference as to whether it’s a counter model or a stand alone cabinet type.

Step 1) The quickest noise control can be had without full access by just removing the front door cover. This is usually done by taking out 2 screws at the bottom of the door and lifting out the front panel. These panels are made easily removable in order to quickly change the color of the unit to match the kitchen decor.

You will usually find a piece of foam material floating loose about in the space between the inner door and the removed outside panel. It is worthless for our sound control purpose and may be discarded. Measure the depth of the space and cut a piece of “Super Soundproofing” absorbent mat of the same thickness or slightly thinner to fit into this space. Fit it right to the edge of the door, attach securely with contact cement to the inside of the washer, making sure you cover the entire area. Now replace the panel and the screws.

Step 2) Under the door will usually be another, shorter panel held in place in the same way. This will have (maybe) about a 2″ thick fiberglass batting attached to it. Remove and discard this useless material. Cut a piece of 2″ thick “Super Soundproofing ” absorbent mat and glue intro place. (Thin thicknesses of foam can be glued together to make thicker thicknesses). Note that you haven’t blocked any of the cooling vents, just replaced the batting. Put that small cover panel back.

Step 3) Now we need access to the dish washer unit, so pull it out of the counter or remove it’s case so we can drape soundproofing mass loaded vinyl (we call it “Floor mat”) over the unit. Cut a panel of it so that it goes from the floor on one side, up and over the unit to the floor on the other side. Don’t worry about the back of the machine, nor does it need to be attached. Lay it over any insulation that may be on the unit. The material will be in the form of an upside-down “U”. A dab of “Goop” (a household adhesive from the hardware store) here and there will hold it place.

Step 4) Line the dishwasher cabinet or the counter it fits into with 1/2 ” “Super Soundproofing” absorbent mat attached with contact cement to provide an absorbent compartment for the unit to fit into and slide it back into place. Try to make sure the foam covers the entire area, without gaps. Use a thickness appropriate to the space.

Step 5) Check the fit between the unit and it’s cabinet or counter, if it’s more than 1/2″, place a piece of wood molding along the edge with a strip of the soundproofing mat attached to it to provide a tight seal, thereby blocking sound from coming out around the gap of the washer and the counter cabinet.

One might be tempted to wrap the motor with soundproofing as motors might seem to make a lot of noise. But these motors operate near the limit of their ratings and are generally of the open frame variety because of much needed cooling. Thus it is not recommended nor necessary as much of the noise created is from the water washing cycles and we will have dealt with that very well!

Soundproofing a Refrigerator: Lining the alcove it sits in is about the best you can do, as this is usually quite effective in absorbing sound. If you can get under the unit, wrapping the motor (use the floor mat material) will help a lot because the motor and compressor are integral and create most all the noise produced by the unit. If the fridge sits in an area with only a wall or two, consider building more walls around it, (alcove), this will really help for maximum refrigerator sound reduction.

Use the tip in step 5 above to block sound in around the unit, but ignore step 2 above because the unit normally pulls/pushes air through that cover. The floor mat material mentioned above really helps if it is laid on the floor and up the back wall and the fridge placed over it. This seems to prevent sound from passing down into the floor and being radiated out into the room. You may need to place a flat material over the mat to slide the unit back in place as its wheels will tend to bunch the “floormat” because is so heavy.

Soundproofing a washer/dryer: First, place vibration pads under the feet of the appliance. This will reduce vibration passed through to the floor. Several thicknesses may be necessary to provide the proper amount of cushioning, which depends on the weight of the machine. so experiment. Then buy enough Floormat to provide a layer completely under the machine and continuing up the back wall of it’s enclosure. It may be tacked into place to hold it. This will help reduce sound transmitted into the wall and floor.

Note: Stand alone washers/dryers that spin horizontally create lots of vibration and are not recommended for 2nd floor installations! (Whirlpool is the exception).

Soundproofing a exerciser or running machine: Place a layer of Floormat down on the floor where the machine is to be placed. (Foam side down). The material size should be 2-3 times larger than the footprint of the machine to allow for sound coming off the machine that is not directly straight down. (Called “Flanking” Sound Paths).

Next place “Super Soundproofing Anti-Vibration Pads” under the footprint of the machine with the dimples down.

This installation is designed to not only reduce airborne sound of the machine being transmitted through the floor, but to limit the vibration of the unit through the floor for maximum sound reduction.

Call us with the dimensions of footprint the machine and we will help you with ordering the needed materials.

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