Qicai Bangyuan

What preparations are required before applying plaster?

Release time:

2023-05-22 16:43

Plastering gypsum is primarily used for applying skim coats to various interior walls and ceilings in residential buildings; it is not suitable for areas that frequently come into contact with water, such as bathrooms and kitchens. In this issue, Shandong Bangyuan New Building Materials Co., Ltd., a manufacturer of lightweight gypsum products, will share some preparatory steps to take before applying plastering gypsum, hoping to be of assistance to all our readers.

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Depending on the available application conditions, select the appropriate type of plastering gypsum; alternatively, if specific performance requirements are dictated by the construction process, specify a plastering gypsum with tailored characteristics.

 

When the putty layer is less than 3 mm thick, the all‑surface‑type plaster can be applied directly; when the thickness exceeds 3 mm, first use the base‑layer type plaster to level the surface, then apply the all‑surface‑type plaster with an elastic coating.

 

At the joints of the two types of wall materials, use alkali-resistant mesh fabric with a basis weight exceeding 80 g/m² whenever possible to enhance performance.

 

The edges of the embedded holes must be left clear in advance.

 

The internal wall corners, surface finishes, and door leaf corners comply with the design specifications.

 

Implement safety protection measures for completed works: windows and doors should be protected with wooden strips or plastic tape; floors should be covered with plastic sheeting; installed pipelines, fire‑proof boxes, electrical switch boxes, junction boxes, embedded components, equipment, guardrails, and other elements should be protected using plastic sheeting.

 

Grassroots-level solutions in rural areas:

 

Effectively removes surface dust, grime, grease, and other contaminants from rural grassroots areas, leaving them clean and tidy.

 

Rural grassroots construction often suffers from uneven surfaces and non‑precast holes, among other drawbacks; similar materials can be used to achieve a smooth, solid finish.

 

At door and window openings and along edge joints, the use of pre‑filled materials is required.

 

Apply water to the rural base surfaces in advance to moisten them, and ensure there is no standing water when applying putty. For walls with high absorbency, first apply a coat of construction-grade adhesive.

 

Slurry preparation:

 

The mixing proportions of the raw materials for plastering gypsum should be appropriate; it is strongly recommended to refer to the suggested mortar mix ratio.

 

Each batch of material should be used up within the specified time. After initial setting, the slurry must not be re‑watered and remixed for use.

 

First, pour the water into the vertical mixer, then add the dry mix. Mix for 2 to 5 minutes until the slurry reaches the desired mortar consistency. Allow it to stand for 5 minutes, then perform a second mixing before use.

 

Shandong Bangyuan New Building Materials Co., Ltd. is located at No. 17 Kunming Road, Linyi Economic Development Zone. Its brand, “Qicai Bangyuan,” reflects the company’s commitment to vibrant, innovative solutions. Bangyuan Building Materials is a comprehensive enterprise integrating research, development, production, and sales of building materials. It operates state-of-the-art manufacturing facilities across China and maintains a network of stable project‑based partnerships. Leveraging cutting‑edge production equipment and a highly skilled R&D team, the company continuously develops a wide range of high‑quality, eco‑friendly building materials.

 

　The main products include molded polystyrene boards, graphite‑enhanced polystyrene boards, lost‑foam molds, polymer‑based bonding mortars, polymer‑modified skim coats, adhesive‑powder‑filled slurries, lightweight machine‑sprayed plaster gypsum, alkali‑resistant fiberglass mesh fabrics, and other innovative building materials.

 

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