How To Properly Run Water Lines Thru Floor Joists

If you re running pex through joists or studs drill 3 4 in.

How to properly run water lines thru floor joists.

The holes must follow a straight line across the floor and must ascend or descend so the pipe will be sloped 1 4 inch per foot. Pull the lines up through the holes drilled in the sub floor image 1 and then run the other end to the area where the water will be coming into the home. Be sure to leave extra pipe on both ends of the run. In a perfect world floor joists are left whole to provide the greatest support.

If joists are 16 inches on center and pipes run across them at a right angle holes should differ in height by about 3 8 inch. When the lines are installed in the floor or wall a necessary valve or faucet is always installed to cap off the pipes so that water can be turned off to the vanity while the remainder of the. The holes will have to follow a straight line that goes across the floor and has to either go up or go down so the pipe has a slope. Run your main lines first.

You also have to leave at least 2 in. Line to each fixture from a central spot. And it entirely depends on the type of floor joists you have. It is never advisable to notch out or cut into floor joists or support beams as this may weaken the structural integrity of the building.

When you run your pipes through a joist you will have to be careful with your work. The issue isn t with the water lines it s with where you drill the holes. You can also use a manifold system where you run a 1 2 in. Do your best to separate the hot and cold lines to minimize heat transfer.

Running drainpipe through joists calls for meticulous work. Area in the middle of the 2 10. How to drill a hole through the side of a floor joist. Have a helper feed the line to avoid kinks and snarls.

Secure the line to the joists using clamps image 2. If you have a standard 2x. Notches can t be deeper than one sixth of the joist depth. But modern living requires electrical wiring and plumbing.

Of solid wood between the top and bottom edges of the joist and the edges of any hole. Run the water lines through the center of the joist and don t drill holes bigger then you have too. In the case of your 2 10 joists the maximum diameter is 35 64 in. The slope should be about 1 4 for each foot of pipe.

Step 4 cut the holes. Floor joist then where i am from you can run water lines through them.