Counting strips when one window interrupts the wall
A window does not remove a full strip’s width — you still hang past the opening and cut the waste carefully.
12 November 2026
Answer: Add the window size on the wall plan. Full-height strips are counted across the width; the opening only reduces paper inside those strips, not the strip count itself.
Tool: Windows — free, runs in this browser.
People often subtract the window area from the wall area and divide by strip area. That under-orders paper because strips still run full height beside and through the opening.
This planner keeps strip count based on wall width and roll width, then shows where the opening sits so you can plan the cuts. Short pieces under a sill are optional if you turn that mode on.
Drag the opening on the diagram until it matches your reveal. Export the cut list before you score the first strip — moving the window later changes which strips take the hit.