Waterproof coating

Waterproof coating refers to a type of coating formed by a coating that can prevent rainwater or groundwater leakage.

Waterproof coating can be divided into: lotion type, solvent type, reactive type and modified asphalt according to coating state and form.

A type of solvent based coating: There are many types of this type of coating, with representative ones being oil-based polyurethane, non curing rubber asphalt waterproof coating, and so on.

The second type is water-based lotion: it is composed of lotion synthesized by various water-based polymers and excellent cement mixed with various additives. The flexibility of polymer (resin) is integrated with the rigidity of cement, making it excellent in impermeability and stability. Its advantages are convenient construction, low overall cost, short construction period, and non-toxic and environmentally friendly. Therefore, polymer cement-based coatings have become the main players in the waterproof coating market, mainly including JS composite waterproof coatings K11、 Acrylic acid, waterborne polyurethane, polymer synthetic waterproof coatings, polymer emulsion asphalt waterproof coatings, and so on.

The third category is inorganic waterproof coatings: this category belongs to rigid waterproofing and is used as a waterproof layer for special areas. Representative products include cement-based permeable crystalline waterproof coatings, waterproof mortar, and so on.

Base treatment

(Substrate)

The substrate must be sturdy, flat, clean, and free of dust, grease, wax, release agents, and other debris;

If there are pores, cracks, or uneven defects on the base surface, it is necessary to repair and smooth them with cement mortar in advance. It is recommended to stick plastic strips to expansion joints, add a layer of non-woven fabric to nodes, and fill the pipe mouth with Leibniz pipe filling material;

The corners of yin and yang should be painted in a circular arc shape (or V-shaped); Ensure that the base surface is sufficiently moist, but without visible water;

Newly poured concrete surfaces (including plaster surfaces) should be allowed to dry completely before construction.

Usage

• Stirring: First, pour the liquid material into the container, then slowly add the powder, and stir thoroughly for 3-5 minutes until a uniform slurry without any lumps or particles is formed before use; Better use of a mixer)

• Brushing: Use a brush or roller brush to directly brush on the base surface, apply even force, and do not miss the brush; Generally, it is necessary to apply 2 coats (depending on the usage requirements), with a thickness of no more than 1mm each time. After the first coat is slightly dry, the next coat should be applied (just not sticky, usually with an interval of 1-2 hours). The front and back should be applied vertically in a cross pattern, with a total thickness of 1-2mm. If the coating has already cured, wet it with water before applying another layer.

• Curing: It is recommended to use wet cloth to cover the coating or spray water to cure the coating 24 hours after construction.

• Protection: Before completely drying and solidifying after construction, please take measures to prevent trampling, rain, exposure to sunlight, sharp injuries, etc.

• Inspection (closed water test): After the waterproof layer has dried and solidified (at least 24 hours in summer and 48 hours in winter), the bathroom, pool, and other parts should be filled with water for 48 hours to check whether the waterproof construction is qualified. Lightweight walls must undergo a water immersion test.

precautions

Please follow the above base treatment and usage methods for construction;

Suitable for use in an environment of 5 ℃ -40 ℃, avoiding high temperature, low temperature, and outdoor rainy weather;

Single layer coating should not be too thick, especially at pipe openings and corners, to prevent cracking;

Please maintain a ventilated environment after construction to facilitate the drying and solidification of the waterproof layer;

Please avoid damaging the waterproof layer during later construction;

When tiling tiles on the waterproof layer, it is prohibited to use pure water paste. Please follow the requirements for tile use and leave gaps. It is recommended to use Leibniz tile adhesive or Leibniz mortar adhesive;

Reference dosage: usually 1.5-2.0 kilograms per square meter; The actual dosage is determined by the purpose, location of use, roughness of the base surface, environmental factors, etc. For details, please consult at the purchasing location.

Product transportation: According to non hazardous material requirements. Prevent exposure to rain, sun, freezing, squeezing, collision, inversion, packaging damage, and other situations.

Storage method: Store in a cool and dry place;

◎ Shelf life: The original packaging has a shelf life of 12 months under normal storage conditions.