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Contact: Gavin Tseng
Company: Foshan Kam Chung Building Materials Co.,Ltd
Nr. 14-17, Building A2, Phase 5, Da Zhuan Wan, Huangqi, Foshan City, Guangdong Province, China
Foshan 528200
Phone: +8613620858122
E-Mail: Send Inquiry
Date/Time:  12/19/22 6:00 GMT

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Calcium Silicate Board
1. Introduction
Calcium silicate board is a most widely used material in China due to its good
performance and easy-processing feature. It is moisture proof and heat
resistant, so it is commonly used for wall and ceiling to keep away humidity
and to slow down the spread of fire. What is more, it can be cut, nailed and
screwed, making installation much easier. Then labor cost could be reduced as
2. Application
Calcium silicate board is moisture proof and heat resistant, strong and
durable, thus commonly used as wall and ceiling for house, office, warehouse,
shopping mall, residential complex etc.
3. Specifications
Size (mm) 2440*1220,
Thickness (mm) 4.5 – 20
Moisture content (%) ≤10
Density (g/cm3) 1.15-1.5
Wet Expansion Rate(%) 0.25
Thermal Conductivity (W/m•K) ≤0.30
Bending Strength(MPa) 9-12
Non- combustibility GB 8624-2006 Class A

4. Advantages
(1). Durable
(2). Insect-free
(3). Moisture proof
(4). Heat-insulated
(5). Easy installation
(6). Safe and Harmless

5. Installation Processes for Interior Wall
(1). Draw lines according to construction plan and install door frames.
(2). Install top keels and floor keels according to the lines. Fix the keels on
base walls with nails, and the distance between nails is 600mm.
(3). After installation of top and floor keels, mark down the installation
points of vertical keels, with 450mm distance between each other. Then check
positions of door and other holes and avoid installing boards on their frames.
(4). Install vertical keels according to installation points. Two ends of
vertical keels should be separately installed into top keels and floor keels.
Fix them after adjusting and leveling. Keels near walls or poles should be
fastened by screws or nails, and the screw/nail distance is 1000mm.

(5). When walls are higher than 3m, it is required to install through keels,
which should be fastened by nails or screws.
(6). Check the installation of keels and door frames and make sure they are
suitable for board installation. Install the boards starting from door frame or
from one end of the walls if there is no door frame. Calcium silicate boards
should be fastened by self-tapping screws. Distance between screws is 200mm
(near walls) and 300mm (away from walls). Distance between screw and board is
no less than 10mm and no more than 16mm. When fixing screws, boards must be
close to keels. Then install electric pipes, water pipes, electric cabinet and
other fire-proof, sound-proof, water-proof materials. Repeat the same
procedures and install the boards from the other side. But seams must be
staggered from the first side. For a dual-layer wall installation, seams of the
second layer should be staggered from those of the first layer as well.
(7). There are 3 methods to deal with calcium silicate board joints, which are
bed joint, deep seam and taped seam. The processes are as follows.
Puttying: Cleaning away dust between gaps and put putty into it, making it
smooth on surface.
Pasting binding tapes: Put binding materials on it when the putty is finished.
First scrape off a thin layer of putty, about 1mm thick and same width as the
tapes. Then put the bonding tapes on it and fasten it by driving out the air
Scraping the middle-layer putty: As soon as pasting the binding tapes, scrape a
middle-layer putty about 80mm wider than binding tapes, thickness about 1mm,
making the tapes sunk into the putty.
Flattening: Use a big scraper to fill the wedge groove and board with putty and
smooth the surface.

Minimum Order: 666 pieces

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