John Lewis How to Measure for Ready Made Curtains: The Ultimate Guide

Getting the measurements right is the most critical step when installing ready made curtains, and John Lewis provides a reliable framework to follow. A precise measurement ensures your window treatments hang beautifully, block light effectively, and operate smoothly without looking sparse or overwhelming the frame. This guide walks you through the exact process, translating the brand's recommendations into clear, actionable steps for any DIY enthusiast.

Understanding the Two Measurement Methods

John Lewis typically outlines two distinct methods depending on whether you want your curtains to sit inside the window frame or extend beyond it. The choice between these methods dictates whether you measure the recess or the width of the area around the frame. Selecting the correct approach from the start prevents the frustration of purchasing panels that are too short or too narrow to achieve your desired look.

Method 1: Measuring for Curtains Inside the Recess

If your window has a deep recess and you prefer a built-in, streamlined appearance, the inside recess method is ideal. For this technique, you will need a metal tape measure and a pencil to record your findings. Start by measuring the width at the top, middle, and bottom of the recess, and use the smallest measurement to ensure the curtains will fit comfortably without getting stuck.

Method 2: Measuring for Curtains Outside the Recess

Curtains that hang outside the recess create a luxurious frame for the window and allow you to cover up any awkward brickwork or uneven edges. When using the John Lewis approach for this style, you will measure the width of the area you want to cover, usually extending from one edge of the decorative molding to the other. This method often results in a slightly larger curtain width, which is necessary to create the signature elegant drape and ensure the fabric pools beautifully on the floor.

Determining the Correct Curtain Width

Once you have established whether your measurement is internal or external, you must calculate the appropriate curtain width. John Lewis advises that ready made curtains rarely look their best when they are exactly the width of the window. To achieve that full, gathered look that adds volume and softness, you generally need to multiply the width of your rod or recess by a specific factor.

Deciding on the Curtain Length

The length of your curtains is just as important as the width, as it dictates the overall aesthetic of the room. For a classic and refined appearance, most homeowners opt for curtains that kiss the floor with a slight break. If you prefer a more tailored look, hemming them to just above the floor prevents them from dragging in dirt and moisture.

When measuring for length, always start from the top of the rod or track down to where you want the hem to fall. Be sure to add extra length for hems and hemming tape; typically, an additional 4 to 6 centimeters is sufficient to create a clean finish. If you are choosing "ready made" curtains, double-check the specific drop options available from John Lewis to ensure your measurements align with a standard product size, avoiding the need for extensive custom alterations.

Accounting for Hardware and Headings

The header of the curtain—the top part that attaches to the rod—can significantly affect the final width. John Lewis ready made curtains often feature specific heading types, such as pencil pleat or eyelet headings, which gather the fabric. When measuring the width of your rod, ensure it is slightly wider than the window to allow the curtains to stack back neatly when open. This prevents the fabric from getting caught and ensures maximum light control when the curtains are drawn.

Common Pitfalls to Avoid

Even with the best measurements, errors can occur during the installation phase. One frequent mistake is measuring too tightly to the glass, which results in curtains that look perpetually closed and block the view unnecessarily. Another pitfall is ignoring the "stack back"—the space the curtains take up when pulled fully open. If you do not account for this, you might find that doors or windows are partially obstructed. Always factor in this flow of fabric to ensure functionality matches style.

Final Verification Before Purchase

Before finalizing your order on the John Lewis website or in-store, it is wise to conduct a quick reality check on your measurements. Use a second person to verify the numbers you have written down, as fresh eyes can catch mistakes you might have missed. Compare your figures against the product specifications to confirm that the drop and width fall within the standard ranges. Taking this extra step saves time, money, and the hassle of returns, ensuring your new curtains fit perfectly the first time.