Counting per Window: Retail Display Quantities That Don’t Run Out

Fourteen windows, eleven weeks, one delivery. That is the shape of a department store Christmas contract, and the number that decides whether it runs smoothly is not the total tonnage. It is how much material each window holds when it is dressed, because that is the figure you top up against every Monday morning.

Stores that order by total weight and divide by the number of windows end up with three windows overfilled and two bare by December, because windows are not the same size and the people dressing them are not the same person.

Count the window, not the square metre

For each window, write down four numbers: the platform area, the planned depth, the number of separate snow areas, and the name of whoever dresses it. Those four numbers produce a per-window quantity that can be checked in thirty seconds on a Monday, and they make a top-up order possible without sending somebody to measure anything.

A typical 2.2 by 1.8 metre window with one drift at 8 cm and a scatter of dry material takes around 90 kg of hydrated snow, which is about 3 kg of dry powder. Multiply by fourteen windows and eleven weeks with a 20 percent maintenance allowance and you have a season order that will not run out in the last fortnight.

The counting sheet that survives staff changes

One line per window, with columns for dressed date, quantity used, top-up dates, and a tick for ‘photographed’. Laminate it and tape it inside the window frame where the dresser can reach it without opening the display. Anything kept in an office gets lost; anything kept in the window gets used.

The photograph at each top-up is the part people skip and the part that pays. Eleven weeks of iPhone shots taken from the same spot give you a strip of images that shows drift over time, and that strip is what convinces a store manager to fund a mid-season refresh rather than argue about it in January.

Topping up without overfilling

Top-up is a mist and a rough, not a rebuild. Spray the surface until it darkens, rough the top two centimetres with a fork, and add dry material only where the depth has dropped below the planned figure. Adding a fresh layer over a dried crust produces a visible line and a texture mismatch that reads as two different materials in the same window.

Where the depth has fallen by more than a third, take the section out and rebuild it. Patching at that point is slower than starting again and it never looks right. Dressers resist this because removing material feels wasteful; the waste is the same either way, and the rebuild takes twenty minutes instead of an afternoon of fussing.

Keep one spare sack of dry powder per five windows in a locked cupboard on the floor, not in the stockroom. The person dressing at 8 a.m. on a Saturday needs it now, and a fifteen-minute walk to a stockroom is how windows end up patched badly or not at all. Lock it so it does not migrate into the general cleaning supplies, and put the window number on the label.

The end-of-run audit

At the end of the season, weigh what comes back. A window that consumed 40 percent more than its dressed quantity is telling you something: either the depth was too shallow to start with, or the environment is drying it faster than the plan assumed, or somebody has been topping up with dry powder and calling it maintenance. All three are fixable next year, and none of them is visible from the sales floor.

Two seasons of those numbers turn a guess into a schedule. Print the per-window sheet and the season totals together; the person ordering next October will thank you, even if they have never met you.

Per-window quantity tables and the maintenance sheet layout are in the artificial snow user guides, formatted to be printed at A4 and taped inside a frame.