Product Use per Pane when Glass Sizes Vary: Normalise by Coated Area

Product use per pane is meaningful only when the panes are comparable. A run of large shower screens will consume more material than a run of small side panels even if the application process is unchanged.

Calculate the treated area

Use the drawing dimensions and count only the faces and areas actually treated. Record exclusions consistently. A pane measuring 0.8 by 2.0 metres has 1.6 square metres on one face and 3.2 square metres across two complete faces.

Separate production use from transfer efficiency

Measure product issued and returned through an appropriate controlled method. Record start-up losses, applicator retention and spills separately where practical. The resulting consumption per area describes the process; it is not automatically the deposited coating quantity.

A worked comparison

Suppose run A uses 120 mL for 40 m² and run B uses 180 mL for 60 m². Both equal 3 mL/m², although run B used more total product. These are illustrative accounting figures, not application-dose recommendations.

Metric	Use
Total product	Inventory reconciliation
Product per treated area	Comparable process consumption
Accepted area	Quality-adjusted production output

Keep quality beside the ratio

A lower consumption figure is not an improvement if coverage, appearance or release performance becomes unacceptable. Use the exact product’s application requirements and compare only runs that meet the same acceptance criteria.

Track pane-size mix and the number of treated faces with every run. This prevents a purchasing or production decision from being based on a ratio whose denominator changed unnoticed.

Related guides

• Inspecting Shower Glass Before Nano Coating
• Shower Glass Coating on a Pane with an Inspection Label
• Receiving Coated Shower Glass after Transport: A Practical Inspection Sequence

Discuss a shower-glass coating project. For application and care, use the current instructions for the exact product.