How do you rough in a bathroom sink drain?

Quote from the video:
Quote from Youtube video: And I'm just going to make sure on the other side that it's exactly where I want it otherwise we'll make some modifications.

What is the rough in height for bathroom sinks drains?





To know about the bathroom sink plumbing rough in heights you must understand that sink drain lines should be between 18 to 20 inches. The water supply pipes must be some inches higher and it should be 20 to 22 inches from the bathroom or kitchen floor and it is generally installed to the drain line sides.

Do bathroom sinks need to be vented?

Without venting, the negative pressure caused by the flow of draining water can potentially suck water out of the drain trap and allow sewer gases to enter the home. The vents allow air into the drain pipes to help keep the drain flowing properly.

What is the standard hole size for a bathroom sink drain?

1 1/2″ drains are the standard size drain for lavatory sinks in North America. The name, 1 1/2″ Drain, does not refer to the specific size of the hole in the sink or diameter of the drain, but is used as a standard term. Glass vessel sinks use a 1 3/4″ drain and are generally used as head sinks.

What is the rough-in for a bathroom vanity?

The bathroom plumbing rough-in dimensions you need to know.



The bathroom sink’s water lines are roughed-in 3 inches above the drain. Measure 21 inches (approximately) above the finished floor. The hot line and cold line are spaced 8 inches apart (from left to right).

What is a rough-in drain?





A plumbing rough-in means that all water supply and drain pipes have been run through bored holes in the studs and other framing members and that all pipe connections have been made. No sinks, faucets, or other fixtures and end elements have yet been installed at this phase.

How high off the floor should a vanity drain be?

The water supply line runs out of the wall into a hole in the back of the vanity, typically placed at a height of 22 to 24 inches from the finish floor. The sink drain is then situated just 4 inches inward from the water supply line.

How far under a sink can the P-trap be installed?

Maximum Distance



According to the International Residential Code, the maximum vertical distance between the sink drain and the entrance to the p-trap is 24 inches.

Are sink drain holes standard?

While a bathroom sink’s design and overall size may vary from one model to the next, the drain holes are fairly standard, 1.25 inches being a general standard, with widths of 1.5 inches and 1.625 inches also common. The size of the hole helps determine which size drain is needed for that particular sink.

What size PVC is used for a sink drain?



Typically, a 1 ½ inch PVC pipe is used for sink drains, as it can adequately handle the water flow out of a kitchen sink.

What is the size of PVC pipe used for bathroom sink drains?

The 1½-inch size is used to capture water that might flow out of a kitchen sink, a bathroom vanity or a tub. The two-inch pipe is commonly used to drain a shower stall or washing machine, and it may be used as a vertical stack for a kitchen sink.

How do you rough plumb in a bathroom vanity?

Quote from the video:
Quote from Youtube video: So if you camp the center of the vanity also it is the center of the drain. Comes straight down it's still going to be coming down because it's 9 inches from the back of the back wall.

How do you plumb a sink in a bathroom vanity?



Quote from the video:
Quote from Youtube video: Instructions. Be sure to put down a rope of plumber's putty underneath the sink drain ring. Attach the p-trap to the sink drain. Line apply teflon tape in a clockwise.

How should a sink drain be plumbed?

Quote from the video:
Quote from Youtube video: This is called the sanitary tee or the drain pipe tee in order to plumb this sink drain I had to purchase the following a small segment of PVC pipe that will fit into the drain pipe tee.

What do I need for bathroom sink drain?

Materials You Will Need:



Sink Drain Kit* P-Trap Kit* Extension tube* – needed when the tail pipe isn’t long enough to reach the p-trap. Plumber’s putty* – some drain kits come with a washer that eliminates the need for plumber’s putty.

Can a toilet and sink share the same drain?

Run the lower sink drainpipe, adding elbows or collar connections as needed to reach the 3-inch drainpipe that runs from the toilet. The configuration depends upon your bathroom layout and the direction of the floor joists, but connect the sink drain to the toilet drain within 6 feet of the toilet, if possible.

Can I vent a toilet through a sink drain?



The toilet is vented through the sink drain. The toilet drain should be 3″, the sink drain is 1.5″, the shared sink drain/toilet vent area should be 2″, and the vent going up should be 1.5″. Also note that where the 2″ drain connects to the 3″ at the bottom the fitting should be a y instead of a tee as shown.

Why is poop coming out of my shower drain?

The most common reason for sewage coming up through your bathtub is a clogged sewer line. All the sinks, toilets, and tubs connect to a single drain pipe that leads to the sewer line under your house. This drain line carries all wastewater and sewage away from your home to the city’s sewer system.