What size should a tub drain be?
1 1/2 inchesClick to see full answer. Also to know is, how do you measure a bathtub drain?Measure straight down from the center of the overflow to the point at which the drain is mounted to the tub: depending on what’s easiest to get to, you can measure from outside the tub down to its…
1 1/2 inchesClick to see full answer. Also to know is, how do you measure a bathtub drain?Measure straight down from the center of the overflow to the point at which the drain is mounted to the tub: depending on what’s easiest to get to, you can measure from outside the tub down to its underside, or from inside the tub to the tub floor. Do not follow the curve of the tub; measure straight down.Also Know, why does a shower require a 2 inch drain? The code allows for only replacing a tub with a shower on the 1 1/2 inch drain, provided that there is only one shower head. New construction should still be 2 inch. Flowing water needs flowing air behind it. The tubs/basins have an overflow vent, which allows air in behind the flowing water so no vaccum gets created. Herein, how far off the wall should a tub drain be? The position of the tub drain will vary, depending on the size and design of the tub, and you’ll need to cut an access hole in the floor at the drain end of the tub to allow for positioning and installing the drain line. This hole should be 9 inches wide and extend at least 12 inches from the wall.Are all bathtub drain threads the same?Tub Shoe/Drain Sizes & Adapters. One of the most confusing and annoying plumbing problems is replacing the bathtub drain (called a plug) that screws into the base (called a shoe). There are two common thread types (16 and 11 1/2 Threads Per Inch), and one uncommon one (14 TPI).
