What is AC index? What is the meaning of AC standards in laminate flooring?

The AC (Abrasion Class) rating is used to assess the abrasion and scratch resistance of engineered Laminate flooring surfaces according to the European standard EN 13329.

This index is determined using a friction gyroscope on the floor surface, with the number of rotations achieved when the first scratch appears corresponding to a specific AC level.

The AC rating plays a crucial role in assessing the durability of Laminate flooring. Products with higher AC ratings demonstrate better abrasion resistance, helping to minimize scratches and extend their lifespan. Choosing the right AC rating helps balance quality and cost, avoiding waste or failure to meet actual needs.

The AC ratings from AC1 to AC6 reflect progressively increasing levels of wear resistance.

1. AC1 – AC2 (≥500 – 1000 RPM) are for wall and ceiling mounting only.
2. AC3 (≥2000 RPM) is suitable for indoor living areas.
3. AC4 (≥4000 RPM) is for offices and shops.
4. AC5 (≥6000 RPM) for showrooms and shopping malls.
5. AC6 (≥8500 RPM) is the highest rating for extremely high-traffic areas like airports.

“Choosing the appropriate abrasion resistance (AC) rating is a balance between performance and economics. While AC3 is sufficient for family bedrooms (around 2000 RPM), commercial spaces require a minimum of AC4 (over 4000 RPM) to ensure the integrity of the finish under constant frictional pressure,” according to architect Francis DK Ching, 2025.

What is AC index?

The AC (Abrasion Class) rating is a globally applied classification system used to assess the abrasion and scratch resistance of engineered Laminate flooring surfaces.

The AC standard originated from the European EN 13329 testing procedure, widely applied in Germany, France, Malaysia, and Vietnam. The testing procedure uses a friction gyroscope that acts on the floor surface, counting the number of rotations until the first scratch appears.

The AC index helps determine the suitability of each type of flooring for different usage environments, from residential to commercial and industrial buildings. This allows users and investors to easily compare and select products that meet their specific needs.

Why is the AC rating important when buying Laminate flooring?

The AC rating is important because it helps buyers determine the durability of the Laminate flooring surface, allowing them to choose the right product to suit their needs and budget.

1. Assessing the abrasion resistance of flooring: The AC rating reflects the abrasion resistance of the Laminate flooring surface. Products with higher AC ratings are more durable, able to withstand the impact of frequent foot traffic, dragging objects, or other abrasive elements. As a result, the Laminate flooring retains its beauty for longer, without fading or damage.
2. Reduce scratches and extend the lifespan of your Laminate flooring: The abrasion-resistant coating on products with high AC standards minimizes scratches, especially in high-traffic areas. This not only ensures aesthetic appeal but also extends the overall lifespan of the flooring, saving on future repair or replacement costs.
3. Cost optimization: Choosing flooring with an AC rating that suits your needs helps users balance quality and cost. For example, there's no need to invest in flooring with an excessively high AC rating for low-traffic areas, but it's still necessary to ensure the AC rating is good enough for high-traffic spaces. This optimizes the budget and ensures effective use.
4. Impact on cost: The higher the AC index, the more complex the production process, leading to higher product costs. Therefore, understanding this index helps users make informed decisions, avoiding waste on unsuitable products or those that exceed actual needs.

What do the levels AC1 through AC6 mean?

The AC ratings from AC1 to AC6 reflect progressively increasing levels of wear resistance, suitable for different applications.

How to choose Laminate flooring with the appropriate AC rating for each space.

Choosing the right AC rating for your Laminate flooring should be based on usage frequency, space characteristics, and durability requirements. Laminate flooring with a higher AC rating offers better abrasion resistance, but also comes with a higher initial investment. Users should carefully consider these factors to optimize investment efficiency and ensure the longevity of the project.

1. For apartments, townhouses, and villas: Laminate flooring with an AC3 to AC4 rating is a reasonable choice, well-suited for family living spaces, bedrooms, and living rooms.
2. For shops, offices, and large living rooms: It is advisable to prioritize flooring that meets AC4 or AC5 standards to ensure durability under high traffic and reduce the risk of scratches.
3. Special projects such as shopping malls, airports, and factories: Laminate flooring with an AC6 rating is the optimal solution; however, it is expensive and should only be used in areas requiring exceptionally high load-bearing and friction resistance.

Questions related to the AC standard

How does floor thickness affect the AC rating?

The overall thickness of the flooring does not affect the AC rating. In fact, the AC rating mainly depends on the thickness and quality of the abrasion-resistant coating applied to the floor surface.

During manufacturing, thicker Laminate flooring typically comes with a higher AC rating. Thicker floors are usually designed for high-traffic areas such as offices and showrooms. Therefore, manufacturers reinforce the surface coating to enhance wear resistance.

Therefore, flooring with a thickness of 12mm usually has an abrasion resistance rating of AC4 to AC5, while thinner flooring (8mm) usually only achieves an AC3 to AC4 rating.

8mm vs. 12mm Laminate flooring – Which one should you choose?

What parameters are typically associated with AC ratings?

Besides the AC rating, buyers need to check three other technical specifications: IC (impact resistance), E (formaldehyde emissions), and B (fire resistance) to comprehensively assess the quality of the Laminate flooring..

1. Impact Criteria (IC) This reflects its impact resistance, preventing the floor from cracking or breaking when heavy objects fall on it.
2. E index (Formaldehyde Emission) Measures formaldehyde emission levels, where E0 and E1 are safe levels for users.
3. Burn resistance index B Demonstrates fire-retardant properties, ensuring fire safety.

Which supplier offers high-quality engineered Laminate flooring with a wide range of AC ratings?

Kosmos Vietnam is a wholesale distributor of a diverse range of high-quality engineered Laminate flooring. Kosmos offers a wide variety of flooring options, meeting all AC standards from residential to commercial applications. Notable product lines distributed by Kosmos include:

1. Egger laminate flooring is imported from Germany and meets AC4 – AC5 standards.
2. Robina laminate flooring is imported from Malaysia and meets AC4 – AC5 standards.
3. Kosmos laminate flooring is manufactured in Vietnam and meets AC3 – AC4 standards..

What are the best types of engineered Laminate flooring currently available? How to identify high-quality, durable, and safe flooring.

Kosmos does not sell directly to retailers. Instead, Kosmos distributes through a system of over 500 dealers across 34 provinces and cities. This ensures that no matter where the customer's project is located, Kosmos dealers will transport, install, and provide warranty service for the Laminate flooring quickly.

Kosmos warehouse specializes in providing quality flooring

Robina AC4 certified Laminate flooring was installed by Kosmos Dealer.

Please contact our hotline. Phone: 0932 067 388 To receive information on the nearest dealer, the Kosmos team is ready to assist you with advice and provide images of our beautiful Laminate flooring collections quickly.