How to install soundproofing fences

Updated February 21, 2017

Whether you live next door to a school, are wedged in between single family homes with little more than a patio garden, or find that the freeway is much noisier than you had thought, learning how to install soundproofing fences is a useful skill to acquire. Granted, these fences cannot completely do away with annoying sounds and the steady din of constant car traffic, but they do have the potential of greatly dampening the actual reverberation that you are forced to endure on a day to day basis, making the backyard once again an oasis of relaxation rather than just an exercise enclosure for your companion canine. Follow these easy steps and you are on your way to a much quieter outdoor experience.

Go online and access the website for your local building department. Find out what the code requirements for residential fences are. Generally speaking, the height of fences is most commonly restricted and you will be wise to know ahead of time how tall you can make those soundproofing fences before you head to the home improvement store.

Talk to your neighbour about installing soundproofing fences. Your neighbour should be willing to foot half the cost of the materials and also for the inspection. If you cannot get your neighbour to cooperate, do not rip down the existing fence. Instead, opt for using it as one portion of the soundproofing barrier.

Measure the length of the property where you wish to install the fences. Next, measure the width of the wooden slats. Use your calculator and figure out how many slats you need to purchase. You need to take the length of the side, convert it into inches and then divide it by the width measurement from the slats. This gives you the number of slats. (Multiply this figure times two if your neighbour is sharing the cost with you.)

Purchase the fencing material; plan on building as high as code permits.

Dig the post holes with the spades and pour in the premixed concrete. Place the posts in the holes and secure them. Allow the concrete to cure at least overnight.

Attach the horizontal framing of the fence to the post holes. If you are working together with your neighbour, go on his side of the property and install the wooden slats. When this task is complete, your neighbour can now go ahead and apply one ore more coats of protective polyurethane finish. If you are not working with your neighbour, just build this new fence against your current old fence.

Walk back to your side of the fence and install soundproofing barrier according to manufacturer specifications. You are using the backside of your neighbour’s slats and the framing that is open on your side.

Install the slats on your side of the fence next. They cover up the soundproofing material.

Finish the installation process by coating your slats with polyurethane to protect your soundproofing fences from rain and weather.

Invite the building inspector to sign off on the finished installation.


Insist on buying high quality soundproofing materials. If you skimp here, your overall soundproofing will not be as effective as it could have been.

If your noise problem is severe, a brick wall is probably your best soundproofing option.

Things You'll Need

  • Internet access
  • Consensus with your neighbour
  • Measuring tape
  • Calculator
  • Fencing materials
  • Spade
  • Premixed concrete
  • Hammer and nails
  • Sound barrier (at least one pound per square foot)
  • Polyurethane coating
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About the Author

Based in the Los Angeles area, Sylvia Cochran is a seasoned freelance writer focusing on home and garden, travel and parenting articles. Her work has appeared in "Families Online Magazine" and assorted print and Internet publications.