The basic treatment of wallpaper before construction should meet the following requirements:
(1) Wall requirements: The wall should be straight and dry.
(1) The moisture content of the concrete or plaster layer shall not exceed 8%;
(2) The moisture content of the wood base layer shall not exceed 12%; there shall be no obvious particles and rust spots;
(3) The yin and yang angles are straight and the surface color of the base layer is the same;
(4) Strong, firm, without cracks and cracks. (For details, please refer to 111.5 of the National Standard GB50210-2001 Building Decoration Engineering Quality Acceptance Specification)
(2) The similarities and differences between the back cover materials used in the back cover treatment of the base layer:
(3) Inspection methods at the grassroots level
(1) Observation: Look at the straightness of the yin and yang angle, the flatness of the wall, the drying procedure, and other visually sensible parts.
(2) Hand touch: mainly judge the hardness of the wall surface, as follows:
A. Test the hardness of the wall surface with nails or hard objects, and scratch the powder-free layer.
B. Test the hardness of the wall after soaking for several seconds with water. The base layer is not soft.
(3) Check the construction record
For details of the inspection items, see 11.1.5 of the national standard GB50210-2001.
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