[:en]RMS building board[:]


RMS building board


Ludox RMS – Reinforce Magnesium Silicate ) is a unique, noncombustible, superior weatherability, high strength, resistant to mold, mildew, fungus and termite construction board product. It can be use for a number of interior and exterior applications including walls and ceiling linings, soffits, tile backing, fascias, floor underlayments, decorative substrate, exterior walls and cladding purposes, fire rated applications like fire doors among many other.

Ludox RMS is a pioneer in the development of magnesium based boards and it’s composition and raw material is among the best and un-match by any known producer throughout China. Our boards are produce from a matrix of MgO, CaCO2, MgCl, natural silicates and other inorganic substances that is safe to human health, 100% asbestos free and formaldehyde free. When expose to fire, it is non-toxic and odorless and an excellent fire resistant product.

Ludox RMS is tested and approve by leading independent testing organization worldwide to ISO, BS EN, ASTM , CNS and GB standards. It comes in various thickness and standard sheet sizes. The surface comes in a white , smooth finish and the back side in a rough finish ideal for lamination purposes to various decorative substrate like wallpapers, wood venears, high pressure laminates, etc. The surface can be painted, laminated, decorated, rendered or spray coated with stone-liked paint.

Ludox RMS boards are harder than drywall , unaffected by water and does not degrade when wet. It is more flexible, resistant to extremes of temperature, crack free than cement board and calcium silicate boards. Unlike wood and plywoods, our boards are resistant to mildew, mold, fungus and termite attack.

Ludox boards can absorb water but it’s performance and durability is unaffected, thus it can use for indoors and outdoors and in damp locations such as showers, bathrooms, kitchens and other wet area applications. It can be use structurally as in bracing for walls and also semi-structurally, such as under-layment for flooring. It can be use in coastal regions, areas prone to hurricanes, rains, extremes of weather because it can withstand harsh weather conditions.

Fire Rating

Standard Testing Authority Test Result
BS 476 part 4, BS EN ISO 1182 Warrington Fire Research Non combustible
BS 476 part 7 Warrington Fire Research Class 1 surface spread of flame
BS 476 Part 22 EXOVA Warrington UK 71 minutes fire rating Non-load bearing wall partition using 9mm thickness boards
BS 476 part 22 CERAM U.K. 180 mins integrity (single side 12 mm board)
BS 476 part 22 CERAM U.K. 120 mins integrity & insulation (steel stud)
BS 476 part 22 CERAM U.K. 120 mins integrity & insulation (timber stud)
BS 476 Part 22 CERAM U.K. 71 minutes fire rated using 9mm thickness board in a wall partition.
BS EN ISO 1716 BRE U.K. Evolved heat of component parts
BS EN ISO 13501-1 BRE U.K. Non combustible Class ‘A1’
ASTM E-84 United States Testing Surface Burning Test with ‘ZERO’ (‘0’) flame spread & no smoke developed.

Dimensional Tolerance

Unsanded boards
3mm , 4mm, 6mm ±0.3mm
8mm, 9mm, 10mm ±0.6mm
12mm ±0.8mm
15mm, 18mm ±1mm
Sanded boards
12mm, 15mm, 18mm, 20mm ±0.3mm
20mm, 30mm ±1mm
38mm, 50mm ±2mm


Thickness Width Length
Unsanded Boards 12mm to 50mm 915mm, 1220mm 2150mm, 2440mm, 2750mm
Sanded Back Side Boards 3mm to 18mm 1220mm 2440mm, 3000mm

Biological Resistance

Rodent Resistance Highly Resistant
Termite Resistance No Damage
Resistance to Bacteria Highly Resistant
Resistance to Mildew Growth No Growth
Fungal Resistance No growth as tested to ASTM C-1228 (USA)

Heat Resistance

THERMAL CONDUCTIVITY ( K-VALUE ) : 0.139 W / mK ( 0.0982 Kcal/m. hr°C)

Ludox RMS board have “K” value of 0.139 W/mK, hence can contribute to energy savings and can provide comfort to the occupants of the buildings in which the board are used. The lower the (K) value of a material, the better it’s insulatiing efficency.

Freeze/Thaw Test

Tested to BS EN 321 for cyclic test in humid condition, board was expose to three cycles each comprising of:

  • Immersion in water at 20 ± 2 ) °C for 72 hours
  • Freezing at between – 12 °C and -20°C for 24 hours
  • Drying at 70 °C for 72 hours

Test Results : No cracking, dsintegration, crumbling, stripping occurred on Ludox RMS Board and the average thickness swelling was -0.2% , average tensile stength 0.20 N/mm2 (12mm) , 0.97N/mm2 (6mm).

Water Endurance Test

No bloating on reverse side. Non-occurrence of swelling, breakage nor tearing apart of the board.

Dimensional Stability

Test Properties Test Standard Test Result Unit
Moisture content BS EN 322 9.4 %
Swelling in thickness ( After 24 hrs. water immersion ) BS EN 317 0.2 %
Water vapour transmission BS EN ISO 12572 48.1 Grams / m2 . Day
Cyclic test in humid condition BS EN 321 -0.1% Ave. thickness swelling
BS EN 321 0.97 N / mm2 ave. tensile strength
Moisture absorption rate CNS 13778 32 %
Movement from dry to saturated state CNS 13778 0.3 %
Length expansion after water absorption CNS 13778 0.06 %

Mechanical & Physical Properties

Test Properties Test Standard Test Result Unit
Compressive Strength BS EN 12390-3 8.3 N / mm2
Bending Strength BS EN 310 12.1 ~ 17.1 N / mm2
Modulus of Elasticity BS EN 310 5210 ~ 7845 N / mm2
Tensile Strength BS EN 319 1.97 ~ 2.42 N / mm2
Screw Withdrawal strength BS EN 320 69 ~ 87 N / mm2
Impact resistance BS 5669 : Part 1 23 mm / mm
Surface Alkalinity BS 6829 8.5 – 9.5 pH

Contains No Hazardous Materials

Test Description Result
NIOSH 9002 Asbestos determination test None detected
ISO 14184-1 Formaldehyde extraction test None detected

Sound insulation

Sound Reduction Index (Rw)  ?
Frequency 100 125 160 200 250 315 400 500 630 800
Sound Absorbtion (dB) 16.8 29.5 31.9 25.6 23 33.6 40 40.9 40.2 44.8
Frequency (Hz) 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000
Sound Absorption (dB) 48.5 51.3 52.4 53.7 52.6 43.6 43.2 49.7 55 59.4
  • Specimens 9mm on both sides, mineral wool = 93mm partition
  • Weighted Sound Reduction Index (Rw): 38dB
Test Description Test standard Sound Insulation
1 layer of 12mm Ludox ® RMS board on both sides with insulation cavity, 70mm metal stud partition BS EN ISO 717-1 Rw = 48 dB
1 layer of 9mm Ludox ® board on both sides with insulation cavity, 70mm metal stud partition BS EN ISO 717-1 Rw = 45 dB
12mm thickness board BS 476 Part 22 Rw = 48 dB
9mm thickness board BS 476 Part 22 Rw = 45 dB
  • Above tests conducted under room receiving volume 50 m3, source room volume 55m3.
  • Frequency from 100 – 5000 Hz. Test conducted in the UK with Sound Research Laboratories.
  • For a higher sounf insulation values, we recommend the user to apply higher density mineral wool /rockwool / glassfibre wool in the cavity and leave a gap for sound transmission inside the core of the partition.


Superior Moisture Resistance
TRILITE will not rot nor physically deteriorate. It is also highly resistant to the effects of moisture. It arborbs moisture and retains its full strength upon drying without affecting the long-term performance of the board.
Chemically Stable
Boards are produced from natural, inorganic raw materials and the chemical reaction is irreversible, resulting in a chemically stable board that is hard yet flexible – a strong board that maintains its strength over time yet is easy to finish.
Good Thermal Properties
TRILITE boards has less ability to transmit heat and can be an efficient thermal insulant. The rated thermal conductivity of the boards are less than 0.139 W/mK.
Resistant to Climatic Conditions
Tested to many cycles of soaking, freezing, heeting (freeze/thaw test method). The board showed no signs of cracking, crumbling, nor any form of disintegration. For applications within normal specifications, the life span of the board is limited only by the durability of the supporting structures and the materials used in fixing.
Dimensionally Stable
Heat Exposure Deformation Rate: <2%
Moisture Exposure Expansion Rate: <0.09%
Moisture Effect Deformation Rate: <0.3%
Fire-rated, Non Combustible
Tested to BS 476 Part 4 (Non-Combustible)
Tested to BS BS 476 Part 7 (CLASS 1)
Tested to EN-ISO 1716 & EN-ISO 1182 (Class A1)
Tested to BS 476 Part 22 (2 hours fire-rated) in steel and timber structure, 120 minutes for integrity and insulation.
Easy to Work
TRILITE has excellent workability that can be cut, drilled, sanded and can be manipulated without the use of specialized equipment. Cost-effective and saves installation time and money.
No Hazardous Materials
Tested to NIOSH 9002 100% Formaldehyde Free as tested to ISO 14184-1 Non toxic, free from carcinogeric substances and any harmful substance to human health.
Resistant to Vermin & Termite Attack
Unlike Plywood or other wood-based boards that harbor insects, mildews, molds, fungi and bacteria, Trilite maintains the beauty, cleanliness and healthy surroundings of your particular application.
Superior Sound Insulation
As your reference, the average rate of noise reduction between the frequencies of 100 Hz to 8000 Hz is 38dB for a partition of 93mm thickness with 9mm on each face. For higher sound insulation values, we recommend the user to apply higher density and thicker core of mineral wool, rockwool or glassfibre wool in the cavity and leave a gap for sound transmission inside the core of the partition or ceiling system.
Green & Sustainable
TRILITE RMS board is a “low tech” and “energy friendly” product it is non-toxic. CO2 is high on the list of “greenhouse” gases, which are said to contribute to the global warming. Our production process is simple, energy efficient, and produces extremely few “greenhouse” gases. This aspect of our board as ‘green’/eco-friendly product, indicates a bright future. Unlike, for example, the gypsum based drywalls that produce thousands of tons of green house gases annually in the manufacturing and drying process, RMS board is naturally dried and cured with no chemicals or heating, eliminating the power intensive drying process. Magnesium Oxide, one of the main ingredient in the boards covers over 8% of the earth’s surface so the product is very sustainable too. An environmentally friendly construction material manufactured from naturally occurring minerals.
NO organic solvents
NO Oil
NO Toxic ingredients
NO heavy metal salts
NO Asbestos
NO formaldehyde emission


Ludox RMS Board is suitable for a wide range of applications and meets stringent demands for ever-increasing building regulations for ever-higher standards of durability, safety and economy.

Board Thickness (mm)  î¨¼
3 4 6 8 9 10 12 15 18 20
Fire Door Substrate  
Decorative Laminate Substrate (melamime, PVC vinyl, wood veneers)    
Ceiling (Concealed System, Lining, Soffits)  
Internal Lining / Wall Partitioning     
Ceramic tile Backerboard for Kitchens & Toilets     
Under Roof (Eaves Lining, Soffits)     
External Roof Fascia Boards   
Floor Substrate   
External Wall Linings   
Prefabricated homes Wall & Linings    
Fire & Insulation Applications      
  • Timber frame structures
  • Steel frame structures
  • Renovation
  • New build
  • Sheathing boards
  • Infill panels
  • Carrier panels
  • Backer panels

Handling & Storage

  • Boards should be carried on its long edges ( vertically) at all times.
  • Boards should be stacked & handled carefully to avoid damage.
  • Care should be taken to avoid damage to the ends, edges and surfaces.
  • Boards must never be carried in its horizontal position.
  • Boards must never be stacked on its edge or upright position.
  • Boards must never be piled up with greater than 400mm spaced support battens

Other Handling Instructions

  • Boards should be slided sideways when lifted from pallets.
  • Boards are supplied in packs on wooden pallets to permit safe handling by forklift trucks.
  • Boards must be allowed to dry ( when becomes wet) prior to fixing, installing or painting.
  • If outside, a protective plastic sheet must protect the sheets from getting rain and the elements.
  • Boards must never be piled up more than 3 pallets on top of each other.

Fixing & Jointing

Can be easily cut using a normal saw, fret saw or an electric tool. When large quantities of the boards are to be cut, the use of a circular hand saw is advisable.
Use masonry drills to countersink or drill screws. Use low/high speed drills for better results. Place the board under the drilling location for a clean hole. Do not use hammer action.
Planing and Sanding
The edge can be planed or smoothed with a surform, rasp or file. Use cponventional papers for sanding.
Ludox RMS are suitable for fixing to both timber and metal framing. Studs are recommended to be placed at 407mm centers. Enough gap in between joints of 2 boards is required, which is normally at 4mm. Be sure to handle the fillings of the gaps for partitions. Before filling, each gap must be clean and removed of all dusts (including steel brush), otherwise the contact point between the sealants and the board is separated without bonding together and may result in surface cracking. Should be constructed according to local building regulations & practice.
For screwing, it is recommended to use self drilling, self countersunk screw in stainless steel. Screw diameter should be from 3.5~4.2mm, length should be 2.5 to 3 times the panel thickness. Fixings at 200mm nominal centers, perimeter of panel fixings should be 10~15mm from the edge of the board and all edges should coincide with support structures. Thinner boards can be stapled with 16 gauge, 6mm crown x 25mm long rust-proof staples.
Can be easily cut either longitudinally or traversely. A cut should be made on the face side of the board by means of a cutter or a knife. A line may be ruled prior to cutting. The rule can be drawn down the board at the required distance and can be scored with the knife at the end of the rule. The boards should then be pressed with both hands, cut and snap over a straight edge. For smooth and clean cut, use a circular saw (at least 120 carbide teeth) and set the speed above 3000 rpm.
Can be manual or power nailing using a flat headed, preferably stainless steel nail. Diameter should be 2.2 or 3.1mm, length 3 to 3.5 times the panel thickness. For power nailing, tools should be set to 3-4 bars and then finely adjusted to achieve required penetration. It is essential to position the boards steadily against the background structure.
On timber or steel for 6mm, 8mm and 9mm supports should be 400 centers. for 10mm, 12mm at 600 centers.

Installation Details

Partition layout vertical view
Partition layout horizontal view
Partition and existing floor
Partition of bedroom and toilet flooring
Partition wall and rc ceiling
Partition and rc ceiling + suspension ceiling
L-corner joint (option 1)
L-corner joint (option 2)
T-section of partition wall
Crosswise section of partition wall
Fix to steel door frame section
Fix to wooden door frame section
Door frame reinforcement (double pillar type)
Window opening frame reinforcement
Typical layout of sheet metal framework
Jointing treatment (seaming)