From how to measure an L-shaped staircase for carpet stair treads · Step 2 of 3 · Video by Oak Valley Designs

Showing 0:54–1:39 of the source video.
Measure the full depth of your stair tread, from the back of the tread to the front edge (bullnose). For instance, if the measurement is 11 and 1/4 inches. It is crucial not to order this exact depth. Instead, subtract a small amount, typically 1/4 inch to 1/2 inch, from the total depth. This slight reduction ensures that the carpet stair tread sits tightly against the bullnose without hanging over, which is important for both aesthetics and safety. For example, subtracting 1/4 inch from 11 and 1/4 inches results in an 11-inch depth for your carpet tread.
Goal: Measure the full depth of the stair tread and then subtract a small amount (1/4 to 1/2 inch) to ensure a snug fit that prevents the carpet from overhanging the bullnose.
This video provides detailed instructions on how to accurately measure stair treads for custom carpet installations. It covers measuring both the width and depth of each tread, offering guidance on how to adjust these measurements to achieve the desired aesthetic of exposed wood. A helpful tip for visualizing the final fit using painter's tape is also included to ensure satisfaction before ordering.
That's going to be your depth. Your depth is going to be all right. This measures 11 and 1/4. Okay, we're not going to order 11 and 1/4. We're going to subtract a/4 in and we're going to order an 11. So that'll give us a little space in the back, which is perfect. And what you want so that the carpet stair tread is really tight on this front bullnness. You do not want that to hang over. And that's really important. You could also say, well, I can either subtract a/4 in or a/ in would also be fine. It doesn't have to be an absolute perfect science. You just want a little space in the back. So, anywhere from a/4 in to a/ inch is perfect. And that's it. So, I would do a 35 by 11 and that would be great.
Automatically transcribed from the source video.
With your tape measure in hand, let's turn our attention to the straight sections of your staircase. For each and every tread in both flights, you'll want to meticulously capture its exact width and depth. Here's a crucial tip for a truly professional-looking result: always measure from the *outer edge of the tread to the outer edge of the tread*. Avoid measuring from wall to wall, especially near turns, as those walls are rarely perfectly square, and we want your custom treads to lay perfectly flat and secure. As you measure, give each tread a sequential number – this simple step will keep your project organized and make ordering a breeze. Don't forget to account for any existing trim or the stair nose overhang; these details ensure your carpet treads sit beautifully and protect your wood. For ultimate accuracy, a carpenter's square can be your best friend for those right-angled measurements, giving you peace of mind that your DIY stair remodel will be a stunning success.
An L-shaped staircase, often called a quarter-turn, brings unique architectural charm to your home. But when it comes to adding the safety and style of carpet stair treads, its 90-degree turn can seem a little tricky to measure. Don't worry, we're here to empower your DIY journey! The secret to a perfect, custom fit for your Oak Valley Designs treads is to see your L-shaped staircase as three distinct areas: the first straight flight, the turning section, and the second straight flight. The way you approach the turn—whether it's a spacious landing or elegant winder steps—will guide your measuring strategy. For straight sections, you'll precisely measure each tread's width and depth. For a landing, it's one simple, larger measurement. For winder steps, each unique, tapered step gets its own careful attention. And here’s a pro tip for peace of mind: always measure from the *tread edge to tread edge*, never wall to wall. This ensures your custom treads fit beautifully, even if your walls aren't perfectly square, delivering the safety and elegance your family deserves.
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