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Design Guide

How to size a walk-off zone: the 3-zone entrance system

May 18, 2026 6 min readALUEK Technical Team

Industry guidance holds that a properly sized entrance matting system captures the large majority of the dirt and moisture tracked into a building. The key is treating the entrance as three zones, not one mat.

Zone 1 — Scrape

At and just outside the door, aggressive scraper and grit-rated rubber infills knock off the heaviest grit and standing water. This is where an aluminum profile system earns its keep.

Zone 2 — Absorb

Inside the threshold, ribbed carpet and textile infills pull residual moisture from the sole of the shoe. Zoning these infills across one mat keeps the transition continuous.

Zone 3 — Dry

A final drying run finishes the job before the visitor reaches the finished floor. As a rule of thumb, more entrance run length means cleaner, safer floors and lower cleaning costs downstream.

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