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gypsum

01. Overview

Gypsum is appropriate for every light and dry construction method for walls, ceilings, and partitions.
It's nonflammable, excellent Insulation, Sound Absorption interior material. It's good for the creation of beautiful & pleasant space.

Certification

02. Features

  • Safety

    Gypsum is originally nonflammable. In case when it is exposed to fire, water molecules which are combined on the crystalloid chemically prevent fire spread and temperature increase and expansion of flame to nearby structures. It has fire resistance and flame retardant, which are required by architecture law. The fire resistance structure made of gypsum boards for the bearing walls, the nonbearing walls, roofs, and floors composited gypsum has 2 hours of fire resistance in case of KS standard fire testing.

  • Eco-Friendly

    Gypsum is an eco-friendly product in which recyclable FGD (flue-gas desulfurization) is used. It acquired a certification of eco-friendly products for valid resource recycling, reduction of toxic substances, insulation and sound absorption as finishing material of walls and ceilings.

  • Benefit from a Quiet Home

    Gypsum is insulates sounds and blocks crashing sounds compared to its weight and size.
    It can be used for boundary walls between households and walls which requires noise prevention to create pleasant interior environments. This complies with the national regulations of sound insulation.

  • Water Control Stability /
    Dimensional Stability

    Gypsum itself has stable crystalloid, so it is stable for changes of moisture and temperature. After construction, there is no deformation such as twisting, deflection and crack.

  • Flexibility and Speed

    Unlike other materials, its specific gravity is light and it is easily cut. This can be easily installed in STUD Method, Gypsum bond method, partition system and ceiling system, It is also possible to decorate it in diverse ways with wallpapers and paints. Many decorations can be repeated during the service life of a building. Unlike the wet construction method, curing is not required so construction can be completed in time without any delay in the winter.

  • Lightweight

    Gypsum system is much lighter than masonry walls, concrete walls, ALC, and lightweight concrete panels with the same weight. Therefore, it is possible to reduce transporation expenses and to reduce roof thickness and column size.

  • Durability

    Finishing with double-layered fire resistant gypsum board realizes excellent durability.
    It can be used safely for crowded places, children zones, and other areas where shocks may occur.

  • Diversity

    This can be used for multipurpose walls such as general dividers, hallway walls, boundary walls between households, shaft division, outer walls, fire area walls. As for building purposes, this can be applied to new construction or renovation of all buildings such as offices, hospitals, hotels, dormitories, and apartment buildings.
    It is also possible to jointless walls, ceilings, and curved walls.

03. Types of Plasterboard

Classification by Shape of Gypsum
Gypsum Square Board
It is the most typical shape of gypsum board. Both ends are in right angles. After installation, it is not contracted or transformed and it keeps the flat surface. It is widely used for walls, ceilings and dividers.
Gypsum Tapered Board
It is a gympsum board of which both ends are made slant with smooth wall joints which can be used to handle joints clearly by using a joint compound and joint tape.
Gypsum Beveled Board
It is a gypsum board which can install joint part efficiently and economically with a slant of 45 degrees to both sides in the length of the board.
Classification by Function of the Gypsum
Standard Board

The Standard Board is suitable for all lightweight dry construction methods for walls, ceilings and dividers. It is widely used for general purposes of all buildings. Also, it is used for curved walls and ceilings to create beautiful and comfortable spaces. It is a highly strong and lightweight gypsum board with incombustibility, insulation and soundproof.

Applications

  • Walls and ceilings of apartment, office, school and other buildings
  • Curved walls and ceilings
  • Nonbearing dividing walls
Physical Properties
Properties Thickness Applicable
Specification
9.5 mm 12.5 mm 15 mm
Water Content(%) 3 or more KS F
3504
Flexural
Failure
Load
(N/kgf)		 Along the
Length		 360(36.7) or
more		 500(51.0) or
more		 650(66.3) or
more
Along the
Width		 140(14.3) or
more		 180(18.4) or
more		 220(22.4) or
more
Incombustibility Semi-
Nonflammable		 Nonflammable Nonflammable
Thermal Resistance
n2℃K/W
(n2n℃/kcal)		 0.043(0.05) or
more		 0.060(0.07) or
more		 0.069(0.08) or
more
※ [1N =0.102kgf, 1(㎡*k)/W =1.16(㎡*h*℃)/Kcal]
Dimensions
Thickness(mm) Width(mm) Length(mm)
9.5
12.5
15		 900 1800
2400
2700
3000
1200 2400
Classification by Function of the Gypsum
dBcheck Board

dBcheck Board is a high class system gypsum to reduce displeasure and efficiency loss by absorbing sounds so as to create stable and comfortable interior environments.
Byucksan provides various light weight sound-proof systems to block the noise more efficiently. We are developing better systems constantly to meet your needs.

Applications

  • Residential spaces such as apartments, condos, hotels, etc.
  • Working spaces such as offices, schools, hospitals, etc.
  • Functional structures such as shopping centers, movie theaters, etc.
  • Non-bearing dividers and ceiling structure
Physical Properties
Properties Thickness Applicable
Specification
12.5 mm 15mm
Water Content(%) 3 or less KS F 3504
Flexural
Failure
Load
(N/kgf)		 Along the
Length		 500(51.0) or more 650(66.3) or more
Along the
Width		 180(18.4) or more 220(22.4) or more
Incombustibility Nonflammable Nonflammable
Thermal Resistance n2℃K/W(n2n℃/kcal) 0.060(0.07) or
more		 0.069(0.08) or
more
※ [1N =0.102kgf, 1(㎡*k)/W =1.16(㎡*h*℃)/Kcal]
Dimensions
Thickness(mm) Width(mm) Length(mm)
12.5
15		 900 1800
2400
2700
3000
Classification by Function of the Gypsum
Firecheck Board

Firecheck Board is highly strong with excellent fire-proof. It can be applied for fire-proof structures of various buildings which requires fire proof functions. It provides more improved fire resistance system to maintain safety and creates more comfortable spaces with excellent sound proof.

Applications

  • Fire-resistance dividers of buildings and dry fire-resistance coating of the metal structure
  • Elevator halls, step walls of leisure and business facilities
Physical Properties
Properties Thickness Applicable
Specification
12.5 mm 15 mm 19 mm 25 mm
Water Content(%) 3 or less KS F
3504
Flexural
Failure
Load
(N/kgf)		 Along
the
Length		 500
(51.0)
or
more		 650
(66.3)
or
more		 KS
Registration in Progress		 1000
(102.0)
or
more
Along
the
Width		 180
(18.4)
or
more		 220
(22.4)
or
more		 380
(38.8)
or
more
Shock-Resistance The diameter of depressed portion must be 25mm or less and cracks must not penetrated.
Flame-Resistance It must not break and fall off.
Incombustibility Nonflammability
Thermal Resistance
(㎡n℃/kcal)		 0.060
(0.07)
or
more		 0.069
(0.08)
or
more		 KS
Registration
Progress		 0.095
(0.11)
or
more
Mass Per Unit Area
(kg/n2)		 10.3
or
more		 12.2
or
more		 20.5
or
more
※ [1N =0.102kgf, 1(㎡*k)/W =1.16(㎡*h*℃)/Kcal]
Dimensions
Thickness(mm) Width(mm) Length(mm)
12.5
15
19
25		 600
900		 1800
2400
2700
3000
1200 2400
Classification by Function of the Gypsum
MoistureCheck Board

Waterproof Gypsum Board maintains high strength and waterproof performance in humid places. It applied to every part of difficult waterproofing construction and performs excellent water proof effect. It can installed to a variety of constructions by the lightweight dry construction method. And it is more effective if you use it mixing with the Standard Board board.

Applications

  • Walls of bathrooms, kitchens & toilets which has high humidity and ceramic tiled wall
  • Construction part where it is humid for a long time such as basement and furring interior finishing materials for factory roofs
Physical Properties
Properties Thickness Applicable
Specification
9.5 mm 12.5 mm 15 mm
Water Content(%) 3 or less KS F 3504
Flexural
Failure
Load
(N/kgf)		 When dry 360(36.7) or more 550(51.0) or more 650(66.3) or more
When humid 220(22.4) or more 300(30.6) or more 390(39.8) or more
Desquamation-Resistance
Whenwater Absorption		 Gypsum must not come off
from the original paper.
Water
Absorption		 Total Rate(%) 10 or less
Surface
Absorption
Amount(g)		 2 or less
Incombustibility Semi- Nonflammable
Thermal Resistance ㎡·K/W
(㎡n℃/kcal)		 0.043
(0.05) or more		 0.052
(0.06) or more		 0.060
(0.07) or more
Mass Per Unit Area(kg/n2) 5.7~8.6 7.5~11.3 9.0~13.5
※ [1N =0.102kgf, 1(㎡*k)/W =1.16(㎡*h*℃)/Kcal]
Dimensions
Thickness(mm) Width(mm) Length(mm)
9.5
12.5
15		 900 1800
2400
2700
3000
1200 2400
Classification according to the Function of Gypsum board
Fire Moisturecheck Board

Fire Moisturecheck Board is the multi-functional product which has fire and water proofing performances simultaneously.
You can install it fire proof Gypsum Board applying places exposed to the moisture like bathroom, kitchen, dressing room etc..
It's the new concept gypsum board which is equipped with many advantages from every aspect in economics, space and constructional efficiency than current construction method (attaching Water Proof Gypsum Board to the Fireproof Wall additionally).

Applications

  • Steel-framed apartments, commercial buildings, etc.
  • Fire areas which maybe exposed to moisture (bathroom, kitchen, dressing room etc. of all buildings).
Physical Properties
Properties Thickness of Board Applicable
Specification
12.5 mm 15 mm 19 mm
Water Content(%) 3 or more KS F
3504
(Waterproof
Board,
Fireproof
Board)
Flexural
Failure
Load
(N/kgf)		 When dry Along
the
Length		 550
(51.0)
or
more		 650
(66.3)
or
more		 KS
Registration
Progress
Along
the
Width		 180
(18.4)
or
more		 220
(22.4)
or
more
When humid 300
(30.6)
or
more		 390
(39.8)
or
more
Shock-Resistance Diameter of depressed portion
must be 25mm or more and cracks
must not penetrate.
Flame-Resistance Must not fracture and fall off
Incombustibility Nonflammable
Thermal Resistance n2℃K/W
(n2n℃/kcal)		 0.060
(0.07)
or
more		 0.069
(0.08)
or
more		 KS
Registration
Progress
Mass Per Unit Area(kg/n2) 10.3
or
highre		 12.2
or
more
Water
Absorption		 Total Rate(%) 10 or less
Surface Absorption Amount(g) 2 or less
※ [1N =0.102kgf, 1(㎡*k)/W =1.16(㎡*h*℃)/Kcal]
Dimensions
Thickness(mm) Width(mm) Length(mm)
12.5
15
19		 900 1800
2400
2700
1200 3000
Classification according to the Function of Gypsum board
Moldcheck Board

Moldcheck Board has the safety and cleanliness by using non-toxic virus-proof liquid to human body. It keeps down the occurrence or the increase of the mold. To maintain the original effect, you need the application of virus-proof paints (water repelling agents) or need the vinyl protective coating-process. If you use this Moldcheck Board together, the mold occurrence prevention effect is more greater.

Applications

  • Parts where mold may appear due to a condition with high temperature and humidity
  • Places which requires pleasant sanitary space
  • Parts where dew condensation may occur due to a temperature difference from the outside
Physical Properties
Properties Thickness Applicable
Specification
9.5 mm 12.5 mm 15 mm
Water Content(%) 3 or less KS F
3504
Flexural
Failure
Load
(N/kgf)		 Along
the
Length		 360(36.7)
or more		 500(51.0)
or more		 650(66.3)
or more
Along
the
Width		 140(14.3)
or more		 180(18.4)
or more		 220(22.4)
or more
Incombustibility Semi-
Nonflammable		 Nonflammable Nonflammable
Thermal Resistance
n2℃K/W(n2n℃/kcal)		 0.043(0.05)
or more		 0.060(0.07)
or more		 0.069(0.08)
or more
Mass Per Unit Area
(kg/n2)		 5.7~8.6 7.5~11.3 9.0~13.5
※[1N = 0.102kgf ,1(㎡*k)/W=1.16(㎡*h*℃)/kcal]
Dimensions
Thickness(mm) Width(mm) Length(mm)
9.5
12.5
15		 900 1800
2400
2700
1200 2400
Classification according to the Function of Gypsum board
GreencheckCarbonDiet

Green Check Carbon Diet gypsum board is the eco-friendly construction materials corresponding to climate change. Green Check Carbon Diet reduces 130KG of carbon(1 palette 160 sheets Dimensionss) compared with the Standard Board board. This is the same with the 24 trees' effect. In addition, in the process of production, it is made evenly in the size & interval of the foam, so the core of gypsum board forms structurally balance. And it is born as the best light Gypsum Board in the world.

Applications

  • Walls and ceiling of buildings, apartments, offices, and schools
  • Curved walls & ceilings
  • Non bearing partition wall
Physical Properties
Properties Thickness Applicable Specification
9.5 mm
Water Content(%) 3 or less KS F 3504
Flexural
Failure
Load
(N/kgf)		 Along
the
Length		 360(36.7) or more
Along
the
Width		 140(14.3) or more
Incombustibility Semi-Nonflammable
Thermal Resistance
n2℃K/W(n2n℃/kcal)		 0.043(0.05) or more
Weight Per Sheet(kg/SH) 7.8 The creterian of density is
eliminated at 2013. 12. revised KS
※[1N = 0.102kgf ,1(㎡*k)/W=1.16(㎡*h*℃)/kcal]
Dimensions
Thickness(mm) Width(mm) Length(mm)
9.5 900 1800
Classification according to the Function of Gypsum board
AquaLock

High performance Water Proof & virus-proof Aqualock obtained extraordinary waterproof & virus-proof performance by the new concept water proof special stencil paper(got a world patent).
And it is joint-processed by the exclusive joint compound, so it organizes the safe waterproof bathroom dry walls itself.
According to the construction Dimensionss, it does partial liquid- applied membrane waterproofing, and compleates tile installation.
Like this, you can install the most safe waterproof bathroom dry wall.

Applications

  • Bathroom dry walls
Physical Properties
Properties Thickness Note Applicable
Specification
12.5 mm
Water Content(%) 3 or less KS Waterproof
Board Dimensionss		 KS F 3504
Flexural
Failure
Load
(N/kgf)		 When Dry 500(51.0)
or more
When Humid 300(30.6)
or more
Water
Absorption		 Total Rate
(%)		 5 or less 2 times more
than Waterproof
Board
Surface
Absorption
Amount(g)		 0.8 or less
Incombustibility Nonflammable
Virus-proof Performance 10 level A prime grade ASTM D 3273
※[1N = 0.102kgf ,1(㎡*k)/W=1.16(㎡*h*℃)/kcal]
Dimensions
Thickness(mm) Width(mm) Length(mm)
12.5 900 1800 / 2400
Classification according to the Function of Gypsum board
ArtSound

ArtSound is a functional gypsum board appropriate to the space which requires a beautiful view of high quality. Because it is finished with the sound absorption function attached fabric, it reduces echo of noise remarkably. And it is processed by various patterns, it can give creativity and comfort to the space.

  • Offices & corridors of commercial buildings / public places.
  • Renovated buildings
  • Shopping mall
  • Department stores, hotels, and exhibition halls
  • Theaters, concert halls, sports centers, schools, etc.

Products code: S10-8   Type: Square 8 parts

Specification
Dimensions(mm) 12X1200X2400 Distribution Map of the
Perforated		 8@22X22
Weight(kg/㎡) <10 Percentage of the
Perforated(%)		 13.4%
Edge Type Tapered edge The Size of the
Perforated(mm)		 10X10
Perforated Type Square Unit(pcs/palette) 50

Products Code: R12-2   Type: Round 2 Parts

Dimensions(mm) 12X1200X2400
Weight(kg/㎡) <10
Edge Type Tapered edge
Perforated Type Round
Distribution Map of the Perforated 2@42X42
Percentage of the Perforated(%) 13.9%
The Size of the Perforated(mm) 12mm
Unit(pcs/palette) 50

Products Code: R15-1   Type: Round 1 Part

Dimensions(mm) 12X1200X2400
Weight(kg/㎡) <10
Edge Type Tapered edge
Perforated Type Round
Distribution Map of the Perforated 1@75x35
Percentage of the Perforated(%) 16.1%
The Size of the Perforated(mm) 15mm
Unit(pcs/palette) 50

Products Code: R15-8   Type: Round 8 Parts

Dimensions(mm) 12X1200X2400
Weight(kg/㎡) <10
Edge Type Tapered edge
Perforated Type Round
Distribution Map of the perforated 8@15X15
Percentage of the perforated(%) 11%
The Size of the Perforated(mm) 15mm
Unit(pcs/palette) 50