K11 Polymer Cement Waterproof Coating (Two-Component)
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What it is
K11 is a polymer cement waterproofing in two parts, an emulsion and a powder, that are mixed on site into a slurry and brushed on. The JUYONS data sheet names it “K11 Polymer Cement Waterproof Coating (Two Component)”, while the label on the 18 kg bucket reads “K11 Polymer Cement Waterproof Paste”. The maker is Hubei JUYONS Waterproof Material Technology Co., Ltd of Xiangyang, Hubei province, China.
Where it goes, according to the data sheet: walls, kitchens, toilets and bathrooms, balconies, basements and swimming pools. The same sheet says tiles can be fixed on top of the finished layer. It puts the theoretical dosage at about 1.5 kg/m² for every millimetre of film, so one bucket gives 12 m² at 1 mm. That is our calculation (18 ÷ 1.5), not a JUYONS figure.
For the cured film, JUYONS quotes impermeability of at least 0.5 MPa and adhesive strength of at least 0.7 MPa in its “untreated” test condition. The documents do not give the emulsion-to-powder ratio, how the 18 kg is split between liquid and powder, the colour of the cured coat or the shelf life. The K11 cementitious waterproofing page explains this type of coating in general.
| Parameter | Value |
|---|---|
| Product name (datasheet) | K11 Polymer Cement Waterproof Coating (Two Component) |
| Name on bucket | K11 Polymer Cement Waterproof Paste |
| Brand | JUYONS |
| Manufacturer | Hubei JUYONS Waterproof material Technology Co., Ltd — Yushan Industrial Park, Xiangzhou District, Xiangyang City, Hubei province, China |
| Packaging | 18 kg/barrel |
| Net weight on label | 18 kg per barrel |
| Pack appearance | White plastic bucket with green lid, green-and-white label and handle; a JUYONS Quality Certificate sticker on each bucket |
| Components | Two component: emulsion + powder |
| Reference dosage | For each millimetre thick film, the theoretical dosage is about 1.5 kg/m² |
| Coverage per bucket | ≈ 12 m² at 1 mm of film (18 ÷ 1.5) |
| Application areas | Waterproofing of walls, kitchens, toilets and bathrooms, balconies, basements, swimming pools, pools and other parts of building |
| Surface drying time | ≤ 4 h |
| Hard drying time | ≤ 8 h |
| Impermeability pressure | ≥ 0.5 MPa |
| Flexibility | Lateral deformation capacity: ≥ 2.0 mm |
| Adhesive strength | Untreated: ≥ 0.7 MPa |
| Feature 1 | The coating is durable and environmentally friendly, with strong adhesion |
| Feature 2 | Enhanced frost resistance, salt corrosion resistance and carbonization resistance |
| Feature 3 | It can be directly applied on wet or dry substrates of various materials |
| Feature 4 | Convenient construction and short curing time to shorten the construction period. Can be tiled over on the waterproof layer surface |
| Pre-treatment | Base flat, clean, free of oil stains and rough surfaces; external and internal corners rounded; strongly absorbent base — sprinkle water before coating, no ponding |
| Mixing | Pour the emulsion into a clean bucket, slowly add the powder «according to the corresponding proportion», mix with a mixer 3 to 5 minutes to a powder-free homogeneous slurry |
| Application | Thin coats, generally 2 to 3; next coat when the first is dry and not sticky (about 4 to 8 hours); coats perpendicular to each other |
| Application temperature | 5 °C – 35 °C; not in rain or snow |
| Pot life | Use within 30 minutes after mixing; do not add water during use |
| Listing data (manufacturer) | Model NO. K11; Trademark JUYONS; Origin Hubei Province, China; Specification 1kg–1.5kg/m²; pallet 115 × 98 × 125 cm, gross 550 kg |
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How it is used
The JUYONS data sheet sets out four stages, given here in its order.
- Prepare the base. It must be flat and clean, with no oil stains or rough spots, and internal and external corners should be rounded. A strongly absorbent base is sprinkled with water before coating, without leaving puddles.
- Mix. Pour the emulsion into a clean bucket, add the powder slowly “according to the corresponding proportion” and run a mixer for 3–5 minutes until the slurry is even and free of dry powder. The sheet prints no number for that proportion, so check the label of your batch before you start.
- Brush on thin coats, generally 2–3. Each new coat goes on once the previous one is dry and no longer sticky, which the sheet puts at about 4–8 hours, and runs at right angles to the coat below.
- Keep within the limits. Use mixed material within 30 minutes and do not add water to it while working. Apply between 5°C and 35°C, and not in rain.
Drying times on the sheet are no more than 4 hours to surface-dry and no more than 8 hours to hard-dry. JUYONS also states the coating can be applied directly on wet or dry substrates of various materials, and gives a lateral deformation capacity of at least 2.0 mm. Room-by-room sequences are covered in the guides to bathroom waterproofing and pool and tank waterproofing. Neither the data sheet nor the bucket label mentions drinking-water tanks.
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