How to Build a Cat Enclosure

The theory behind this enclosure is that a cat will not jump on the hardware cloth because it is not stable.

This will keep cats out of your backyard as well as your cats in the backyard.

EMT conduit, typically used for electrical application, saved us a great deal of money. At our local Home Depot in Las Vegas, 10 ft. of 1/2 in. EMT conduit is only $2.

You will need:

  • EMT piping 1/2 inch
  • 1/2 inch EMT pipe bender
  • Quarter inch hardware cloth
  • 1/2 inch EMT brackets
  • Masonry screws or wood screws depending on your wall (we used blue masonry screws for brick)
  • Stainless steel zip ties

From top to bottom: hardware cloth, stainless steel zip ties, conduit bender, emt conduit

1/2" emt bracket

Cut all the supporting brackets. Each bracket is 24 inches long and the bend starts at 4 inches and is bent at a 60 degree angle. You will want to space them from 36 to 48 inches between brackets.

Each supporting bracket will need two EMT brackets to provide stability.


Once all the EMT brackets are fastened to the wall, secure hardware cloth to the brackets using the steel zip ties.

We filled the tops and bottom of each EMT bracket we made with foam insulation, make sure to wear gloves because that stuff sticks to your hands for days!

If your wall steps down like mine, you could also cut a set of brackets longer so they accomodate for the drop in height, this would ensure your hardware cloth barrier is straight.