I am installing a sprinkler system in my yard in Colorado. I am about ready to tie it into the main line under the house and run it out the front and back of the house. Is there anything special I should do when going through the wall?? I'm thinking:

Dig down in the dirt 1 foot outside where I want it to come through. Drill a hole through the brick, feed copper pipe out. Fill area around pipe with silicone. Burry pipe.

It will definately freeze in colorado in the winter, so I'm planning on having a shuttoff valve under the house and will drain it in the winter.

Thanks

Andy