The color differences of gypsum boards are mainly reflected in their basic properties, functional characteristics, and decorative adaptability. The core differences can be classified and analyzed from the following dimensions:
1、 Basic color classification and functional characteristics
Color types represent the core characteristics and applicable scenarios of the product
Pure white ordinary paper faced gypsum board and water-resistant gypsum board have high surface flatness and a light reflectivity of over 85%, making them easy to match with other materials; Cost 10% -15% lower than colored panels of the same specifications for commercial space ceilings (such as office buildings and shopping malls), home decoration foundation layers, and wall shapes that require secondary painting
Colored perforated sound-absorbing panels and decorative gypsum board pigments are directly added to the core material or protective paper, with a color fastness of up to level 7 (the highest level in the national standard) and an anti UV fading rate of less than 5% per year for kindergarten walls, themed restaurant decorations, KTV private room sound-absorbing walls, and museum exhibition background walls
Imitation wood grain/stone grain transfer printing gypsum board and stone pattern embossed board surface texture are achieved through 3D relief+UV transfer printing technology, with a texture depth of 0.3-0.8mm, and a touch similar to natural materials for homestay decoration, new Chinese style walls, hotel lobby background walls, and ecological themed exhibition halls
Metallic texture color aluminum zinc gypsum board, metal paint coated board surface coating thickness ≥ 25 μ m, salt spray test>1000 hours, thermal conductivity 0.16W/(m · K), industrial wind LOFT space, science museum exhibition, subway channel ceiling, laboratory walls with moisture-proof and anti-corrosion requirements
2、 The performance impact caused by color differences
physical property
Water absorption rate: Due to differences in pigment density, the water absorption rate of dark gypsum board is 3% -5% higher than that of white board (for example, the water absorption rate of dark gray water-resistant board is ≤ 8%, and that of white water-resistant board is ≤ 5%)
Fire rating: Colored boards with added inorganic pigments (such as red) have better combustion performance than organic pigment boards, and the oxygen index can reach 32 (national standard requirement ≥ 28)
Sound insulation performance: The black sound-absorbing panel with a perforation rate of 15% has an NRC (Noise Reduction Coefficient) of 0.75, which is 0.1 higher than the white panel with the same aperture (due to the resonance effect of black pigment on sound wave absorption)
Decorative adaptability
Spatial perception: Cool tones (blue/gray) can extend the visual range of a 2.8-meter high space to 3.2m, while warm tones (yellow/orange) can shorten the visual range of a 5-meter-long corridor to 4.5m
Lighting compensation: In a dark room with an illuminance of less than 300lx, using high brightness (L *>85) off white gypsum board can improve spatial brightness perception by 20% -30%
Style matching:
Modern minimalism: Recommended pure white matte board (glossiness<15 °)
Industrial retro: choose galvanized silver gray board (surface roughness Ra ≥ 3.2 μ m)
Natural Countryside: Wood grain transfer printing board (texture repetition rate<5%)
3、 Key decision-making factors for color selection
Space functional requirements
Medical facilities: Antibacterial coated gypsum boards (such as light blue boards containing silver ion additives, with an Escherichia coli inhibition rate>99%) are required
Wet environment: Prioritize using water-resistant boards (water absorption rate ≤ 5%) paired with dark colors (such as dark gray/dark green, with a 40% increase in stain resistance compared to light colors)
Acoustic requirements: The darker the color of the porous sound-absorbing panel, the higher the mid to high frequency sound absorption coefficient (for example, the black perforated panel has a sound absorption coefficient of 0.82 at 1000Hz)
Cost control strategy
Small area decoration: using colored gypsum board (unit price 20% -30% higher than white board)
Large area foundation layer: using white standard board, partially matched with colored metal strips for edge finishing (cost reduction of 15% -20%)
Irregular shape: Choose bendable gypsum board (thickness ≤ 9.5mm), matched with customized colors (minimum order quantity ≥ 500 ㎡, unit price increased by 10%)
Construction and maintenance
Cutting accuracy: Laser positioning is required for deep color plate cutting (cutting error ≤ 0.5mm), which increases the qualification rate by 25% compared to ordinary manual cutting
Repair difficulty: After the light colored board is damaged, it can be repaired with putty of the same color (color difference Δ E ≤ 1.5), while the colored board requires customized color paste (cost increase of 50 yuan/kg)
Cleaning cycle: Matte boards should be cleaned once a quarter, and glossy boards should be wiped with neutral cleaning agents every month (avoiding the use of alcoholic solvents)
4、 Color selection suggestions for special application scenarios
Recommended scene type, color, technical parameter requirements, case reference
Clean room white anti-static board (surface resistance 10 ⁶ Ω) dust adhesion rate ≤ 0.3g/m ², in compliance with ISO 14644-1 standard for semiconductor factory ceilings
The swimming pool is covered with lake blue waterproof and chlorine resistant board, with a chloride ion erosion rate of ≤ 0.05mm/year and a UV aging resistance of 5000h on the water park wall
The combustion performance of the gray green fireproof and flame-retardant board in the subway tunnel is A1 level, and the smoke toxicity is t1 level, which meets the GB 8624-2012 standard for urban rail transit side walls
Museum display cabinets have a matte off white dimming panel with a reflectivity of ≤ 15% and adjustable color temperature (2700K-6500K), which meets the CIE S 025 standard for cultural relic display backgrounds
5、 Industry Trends and Color Selection Prospects
Digital color matching technology
Obtain spatial basic color values through a 3D scanner, and generate customized color schemes with a matching degree greater than 90% using AI algorithms (error Δ E ≤ 1.2)
Typical application: A high-end hotel project uses digital color matching to control the color difference between wall gypsum board and soft decoration within 0.8
Environmental pigment innovation
Water based inorganic pigments (VOC content<5g/L) replace traditional solvent based pigments, with heavy metal content in compliance with RoHS 2.0 standards
Typical product: A certain brand has launched zero formaldehyde colored gypsum board, with TVOC emission ≤ 0.03mg/m ³ (national standard ≤ 0.5mg/m ³)
Functional compounding
Develop color changing gypsum board with both temperature and humidity control functions (such as temperature sensitive color changing layer, light blue at 25 ℃ and white at 30 ℃)
Typical case: A hospital uses photochromic panels to display disinfection status under ultraviolet irradiation (purple → colorless)
Summary: The selection of gypsum board color requires comprehensive consideration of functional requirements, cost control, construction and maintenance, and future trends. It is recommended to use white as the basis for ordinary decoration, with partial colored boards to enhance the design sense; Special scenarios need to prioritize meeting performance parameters (such as fire resistance, water resistance, and antibacterial) before matching decorative effects. It is recommended to achieve a balance between performance and aesthetics through color card comparison, sample testing, and professional consultation.
