YAKCO Rock Design Rock Texture Board: A Solution for the “Lived-in Atmosphere” of Mahjong Rooms and Home Theaters

        In social spaces such as mahjong rooms, billiard halls, home theaters, and bar private rooms, panels face a unique set of challenges: accidental cigarette drops, hot teacups placed directly on the surface, beverage spills, and high‑frequency cleaning and wiping.

Tech: yakco technology

        Ordinary decorative panels in such environments often end up “scarred”– cigarette burn marks, white heat rings, stain penetration, and even polishing wear from frequent wiping.

        YAKCO Rock Design Melamine Board addresses these pain points with four data points from its test report: resistance to cigarette burns Grade 4, resistance to dry heat Grade 5, resistance to surface staining Grade 4, and a wear value of 57 mg/100r– providing an industrial solution.


1.Resistance to cigarette burns Grade 4: Accidental cigarette contact leaves no permanent burn marks

Test item: Resistance to cigarette burns  

National standard requirement: ≥ Grade 4  

YAKCO : Grade 4 – Pass

         In places where smoking is allowed– mahjong rooms, club private rooms, home theaters – accidental contact between a cigarette and the table surface is almost inevitable.

         Grade 4 means that after a lit cigarette burns out, the rock grain board surface may show extremely slight wipeable marks or no obvious permanent damage – no burn craters, black scorch spots, or resin carbonisation peeling.

Compared to natural stone: although granite is heat‑resistant, tar from cigarettes can penetrate its micro‑pores and form yellow stains that are hard to remove.
 

Compared to ordinary decorative panels: many products only achieve Grade 3 or even lower in the cigarette burn test – a single cigarette contact leaves a permanent “scar”.  

YAKCO’s Grade 4 provides substantial fault tolerance in high‑frequency social spaces.

2.Resistance to dry heat Grade 5 (highest): Hot teacups, small hot pot bottoms placed directly – no coaster needed

Test item: Resistance to dry heat  

National standard requirement: ≥ Grade 4  

YAKCO : Grade 5 (highest grade)

Grade 5 means that after placing a metal heating block at approximately 100°C (simulating a hot teacup bottom, small hot pot base, or electric kettle base) on the board surface for a certain period, the surface shows almost no visible change– no white heat rings, uneven gloss, or foggy marks.

For home theaters: hot coffee or tea can be placed directly on the coffee table without a coaster every time.  

For mahjong rooms: hot drinks are frequently on the card tables, and staff may not have time to put coasters on every table– Grade 5 dry heat resistance greatly reduces the frequency of tabletop damage.  

For hot pot restaurant private rooms: the tabletop edge near the pot can also withstand brief contact with hot containers.

3.Resistance to surface staining Grade 4: Tea, ash water, cola– wipe clean in one go

Test item: Resistance to surface staining  

National standard requirement: ≥ Grade 4  

YAKCO : Grade 4 – Pass

        Social spaces have a wide variety of contaminants: tea, coffee, cola, ash water, soy sauce (from takeout), wine stains, etc. Grade 4 means that most common contaminants, when spilled, can be removed by wiping with a damp cloth– no staining, no rings.

       The light‑and‑dark texture of the rock texture itself has an additional hidden advantage: even extremely slight marks blend into the pattern and become inconspicuous. Cleaning staff do not need strong detergents– ordinary neutral cleaner plus a damp cloth is enough to keep the surface tidy.

4.Resistance to surface wearing: No show‑through after 350 rotations, wear value 57 mg/100r – withstands daily high‑frequency wiping

Test item: Resistance to surface wearing (benchmarked against plain colour board)  

National standard requirement: No show‑through after 350 rotations, wear value ≤80 mg/100r  

YAKCO : No show‑through after 350 rotations, wear value only 57 mg/100r (29% better than the standard limit)

         Card tables in mahjong rooms, bar counters, and coffee tables in home theaters are wiped repeatedly every day with damp cloths, sponges, and detergents. The lower the wear value, the less likely the surface decorative layer is to become thin or develop local “wear‑white” patches.

         57 mg/100r means that even with daily high‑frequency cleaning, after many years the rock texture remains clear, the colour does not fade, and there will be no uneven wear like “centre shiny, edges dull”.

5.Substrate support: The “foundation” of the rock grain determines everything

The four surface performance indices above ultimately depend on the stability of the substrate. YAKCO Melamine Board Substrate provides:

1.Density 0.72 g/cm³: uniformly distributed, ensuring consistent depth during rock texture pressing, and preventing stress cracks due to local density differences.

2.Internal bond 0.36 MPa: the substrate is compact and non‑delaminating; the high temperature in the cigarette burn test does not cause delamination between the substrate and the decorative surface.

3.Moisture content 5.3%: low shrinkage and swelling, avoiding substrate deformation caused by environmental humidity changes that could otherwise pull the decorative surface into micro‑cracks.

Typical application scenarios

1.Mahjong room card table-Cigarette butts, hot teacups, frequent wiping

Yakco: Resistance to cigarette burns Grade 4 + resistance to dry heat Grade 5 + wear value 57 mg/100r

2.Home theater coffee table-Hot coffee, snack spills, remote control scratches:

Yakco: Resistance to dry heat Grade 5 + resistance to surface staining Grade 4 + resistance to surface scratching 1.5 N

3.Bar private room tabletop-Wine stains, ash, ice water marks:

Yakco: Resistance to surface staining Grade 4 + resistance to cigarette burns Grade 4

4.Billiard hall rest area-Hot drinks, cigarette butts, cleaner wiping:

Yakco: Resistance to dry heat Grade 5 + resistance to cigarette burns Grade 4 + excellent wear resistance

Conclusion: Let the “lived‑in atmosphere” of social spaces no longer harm the panels

        The value proposition of YAKCO Rock Design Rock Grain Board is straightforward: designers and homeowners do not have to give up the premium texture of rock texture just because the space allows smoking or often has hot drinks.

       Resistance to cigarette burns Grade 4, resistance to dry heat Grade 5, resistance to surface staining Grade 4, and wear value 57 mg/100r– these four data points together build a decorative panel suitable for “high‑frequency use with occasional accidents” in social scenarios.

        When a mahjong room owner chooses a tabletop material, or a home theater owner selects a coffee table finish, YAKCO rock texture board provides an answer that does not require “constant caution”.

More about Rock Faced Board: Rock Design Melamine Board