Stair runners usually sold by the running foot or yard can be 22 to 36 inches wide.
Measure pie stairwell carpet.
Bend carpet samples in half before making your purchase.
Do this for 2 3 stairs in case there are any variations in width.
How to measure for carpet stair runners.
Here s how the math would work out.
Position the tape measure at the edge of the rise and pull it down to the bottom of the fall of the stair where it adjoins the step below it lol.
For a curved staircase that is open on one side and contains 12 cap pie stairs without a bullnose stair you would need 12 x 10 of carpet.
12 stairs each 48 wide with a rise of 8 and a tread of 10 plus 3 for the nose.
The important thing is to measure each individual stair separately.
Some weaves expose carpet backing when bent and thus are not suitable for stairs.
How to measure stairs and landing for carpet.
Bear in mind that some geometric patterned carpet may be hard to match on pie shaped stairs.
The stairs take a 90 degree turn at a corner so three of the stairs are pie stairs.
At a minimum matching patterns may result in excess waste.
There are individual parts a landing a hall and the stairs part which may be a combination of straight stairs and winding stairs.
Measure the width of the stairs with a measuring tape.
This is a little trickier perhaps but follows the same principle as measuring a room.
Use the tape measure to obtain the fall of each step.
Stretch out the measuring tape parallel to the edge of a stair to get the width.
Three pieces each 48 x 30 for a total of 4320 square inches.
Add on no matter how much carpet you calculate you need you should always buy just a bit extra to allow for any oddities or mistakes when installing it.
The total is 12 096 square inches.