Ceiling material knowledge Raiders (optional article)

1、Paper gypsum board

Visual appearance quality shall be free of defects such as corrugation, grooves, stains, scratches, etc. No exposed parts shall be connected between the protective cover paper and the gypsum core; the size of the gypsum shall be checked, the length deviation shall not exceed 5 mm, the width deviation shall not exceed 4 mm, and the thickness deviation shall not be Beyond 0.5mm, wedge edge depth deviation should be between 0.6-2.5mm, edge width should be between 40-80mm, moisture content is less than 2.5%, 9mm board weight is about 9.5kg per square meter, breaking load Longitudinal 392 cattle, horizontal 167 cattle; purchase should ask the dealer for inspection report inspection.

2, mineral wool sound-absorbing board

Observe that the packing box should be intact, undamaged, and free from water stains. Open the packing box and observe the sound-absorbing board. The surface should be clean, free from blemishes and no wear.

3, plastic PVC buckle board

When purchasing a PVC ceiling, be sure to ask the dealer for a quality inspection report and product inspection certificate. Visual appearance quality: The surface of the board should be smooth, no cracks, no bumps. Can be assembled and disassembled freely, the surface is lustrous, without scratches; the sound of the hand striking the board surface is light and brittle, and the hand bending board has greater flexibility. In the test report, the product performance indicators should meet: heat shrinkage less than 0.3%, oxygen index greater than 35%, softening temperature above 80°C, flash point above 300°C, water absorption less than 15%, moisture absorption less than 4%, dry Static bending strength greater than 500 MPa.

4, metal products ceiling

The metal decorative plates include aluminum, copper, stainless steel, and aluminum alloys. The decorative plates with copper and stainless steel materials are of higher grades and higher prices. The general living room decoration and aluminum alloy decorative plates are more suitable for people's general shopping. Psychological, inexpensive. Specifications are rectangular, square, etc., for larger room decoration, the use of long strips of the integrity of the board; for the decoration of small rooms generally can use 500mm × 500mm. Because of the poor thermal insulation properties of metal plates, in order to obtain certain sound absorption and thermal insulation functions, when selecting metal plates for ceiling decoration, thermal insulation and sound absorption products such as glass wool and rock wool can be used to achieve the function of thermal insulation and sound absorption. In particular, residents living on the top floor can improve the indoor environment after decorating and obviously save air-conditioning energy consumption costs.

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