Contamination Control Sticky Mats Inside Data Centers

Contamination Control Sticky Mats in Data Centers

A contamination control sticky mat is a pad of peel-off adhesive sheets placed at a doorway. Every shoe sole and trolley wheel that crosses it leaves behind dust, sand and grit, before that dirt reaches the data hall floor.

It is one of the cheapest controls in the building. Used at every entry and peeled on time, sticky mats help keep the room at ISO 14644-1 Class 8, the cleanliness level the ASHRAE TC 9.9 guidelines set for data centers.

What are the benefits of sticky mats?

1. They stop dirt at the door

Sticky mats trap dirt, dust and particles from shoe soles, cart wheels and anything else rolled into the data center. Placed at entry points, they are the first line of defence against contamination.

2. They help keep the air at the target class

Fewer particles brought in means fewer particles lifted into the air by foot traffic and cooling airflow. That supports the ISO 14644-1 result in both the at-rest and operational states. How and when that result is measured is explained in when to take the ISO 14644 reading.

3. They protect sensitive equipment

Dust that gets past the door can settle on server fans and cooling parts and lead to overheating. It can also wear delicate components or carry moisture and corrosive salts onto circuit boards. ASHRAE lists these mechanical, chemical and electrical effects of dust. Stopping dust at the threshold reduces all of them.

4. They reduce maintenance costs

A cleaner room needs less frequent floor and equipment cleaning, and puts less load on cooling filters. Over time, that means lower maintenance cost and longer equipment life.

5. They support ESD control

Some sticky mats are made from anti-static materials. Where ESD flooring is installed, choose a mat rated for it, so it does not break the grounding path between footwear and floor. The wider topic is covered in what is ESD cleaning in data centers.

6. They are easy to use and replace

Sticky mats cost little and need little effort. When the top sheet is full of debris, you peel it off and the next clean sheet is ready.

7. They show that entrance control is in place

Clean, regularly peeled mats at every door give auditors and clients visible evidence that contamination control starts at the entrance. Combined with a peel log, they show the control is kept up every day.

Where should sticky mats be placed?

1. At every entry point to the data center, including loading docks and doors used for deliveries.
2. In transition areas between spaces with different cleanliness levels, for example from the corridor into the raised floor area.
3. In high-traffic zones where people or equipment enter and leave often.

At the main entries, combine mats with shoe covers: a mat on the outer side, the shoe cover dispenser, then a second mat inside the door. The full layout is in shoe covers in data centers.

How do you use sticky mats properly?

Replace layers often

Peel the top layer as soon as it looks dirty. Most mats have 30 layers, each numbered from 1 to 30. The numbers make it easy to track which layer is in use at each door, and to record each peel in the daily maintenance report.

Note: how often you typically peel mats at a busy main entrance, and on dusty days!

Use the right size

A mat must be long enough that each foot lands on it at least twice. A small mat that people step over does nothing. Trolley routes need mats wide enough for both wheels.

Fix the frame

Use a frame or a mat with an adhesive back, so it does not slide or curl at the edges. A curled edge becomes a trip hazard and people will start to avoid the mat.

Keep a peel log

The log takes seconds to fill and shows at a glance which door is used most and whether mats are being changed.

Combine with other measures

Sticky mats work best alongside shoe covers, ESD flooring where needed, MERV filtration of incoming air as ASHRAE recommends, and regular professional cleaning. In Gulf sites, where fine desert dust sits on every outdoor surface, peel more often on dusty days. Local conditions are covered in data center cleaning in Saudi Arabia.

A sticky mat is the simplest piece of contamination control you can install. Put one at every door, peel it on time and log it, and much of the dust that would have reached your servers stays at the threshold.