BestSeal B12
Waterproofing cement miscible compound, high elasticity, anti-surface cracking
Advantages:
Safe, easy to use, highly effective and durable over the long term.
Sand-free, making it very flexible to use and highly cost-effective.
High elasticity and good adhesion, so no cracking or peeling even under harsh weather.
Two effective, complementary waterproofing mechanisms in one product, so there is almost no application risk.
Good UV and alkali resistance, so it can be applied right after the wall is freshly plastered, saving time and speeding up progress.
Good resistance to moss/algae and mold, effectively protecting the surface and extending the structure's life.
Color can be changed as required.
Non-toxic and environmentally friendly; can be used for waterproofing in cases of direct contact with domestic water.
BestSeal B12
Technical summary
Category
Waterproofing & Fillings
Waterproofing cement miscible compound, high elasticity, anti-surface cracking
Technical documents
Product data
| Form | Emulsion, milky white. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Composition | Modified copolymer combining inorganic and organic bases. | ||||||||||||
| Density | 1.025 ± 0.005 kg/liter (25°C). | ||||||||||||
| pH | 8.5 ± 1.5 (25°C). | ||||||||||||
| Mixing ratio | BestSeal B12 / powdered cement = 1 / 1.5 (by weight). 1 kg BestSeal B12 + 1.5 kg cement ≈ 1.5 liters of waterproofing slurry. | ||||||||||||
| Coverage | 0.5 kg/m²/coat. At least 2 coats should be applied. | ||||||||||||
| Packaging | 4; 18 kg/pail or as required. | ||||||||||||
| Storage | In a cool, dry place at an ambient temperature of 5°C - 35°C. | ||||||||||||
| Shelf life | 12 months from the date of manufacture. | ||||||||||||
| Application ambient temperature | Minimum +15°C / Maximum +35°C. | ||||||||||||
| Working time | 90 minutes from mixing with cement. | ||||||||||||
| Technical specifications |
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Applications
Waterproofing and preventing hairline (crazing) cracks on external wall surfaces (including basement outer walls, tanks, water pipes, etc. before backfilling), balconies, gutters, rooftops, etc.
Negative-side waterproofing for internal wall surfaces, including basement walls, tanks, water pipes, etc.
Waterproofing floors, walls and pipe-penetration joints of toilets, bathrooms, etc.
Advantages
Safe, easy to use, highly effective and durable over the long term.
Sand-free, making it very flexible to use and highly cost-effective.
High elasticity and good adhesion, so no cracking or peeling even under harsh weather.
Two effective, complementary waterproofing mechanisms in one product, so there is almost no application risk.
Good UV and alkali resistance, so it can be applied right after the wall is freshly plastered, saving time and speeding up progress.
Good resistance to moss/algae and mold, effectively protecting the surface and extending the structure's life.
Color can be changed as required.
Non-toxic and environmentally friendly; can be used for waterproofing in cases of direct contact with domestic water.
Application instruction
Surface preparation:
The surface to be waterproofed must be clean, hard and solid, and cleaned of oil, grease, dust, moss/mold, excess cement and other impurities, etc.
Surface defects (cracks, voids, etc.) must be repaired and patched with suitable dedicated Bestmix repair products (contact the technical support team for advice).
Saturate the entire surface with clean water, but do not leave standing puddles on the surface.
Material preparation:
The cement must be well-selected, a fine powder, free of lumps and within its shelf life.
Mixing:
Pour BestSeal B12 first into a clean container of suitable capacity. Then gradually add the corresponding amount of powdered cement while the mixing blade keeps turning (blade speed 400 ÷ 500 rpm) until the mixture is homogeneous (lump-free).
Application:
Use a brush, short-nap roller or pressure spray gun to apply the product evenly over the entire surface to be waterproofed at an average coverage of 1.0 ÷ 1.5 kg of slurry/m²/coat. At least 2 coats should be applied, with the next coat at a perpendicular or diagonal direction to the previous one (if using a brush) after the previous coat has dried.
Notes:
The waterproofed surface must be protected from direct rainwater for at least 4 hours from application.
The product's allowable working time is 90 minutes from mixing with cement.
To adjust the product's shade (gray tone), white cement can be mixed in at a suitable ratio; the higher the white-cement ratio, the lighter (grayer) the waterproofing layer's color.
Cleaning:
Clean tools and equipment with clean water immediately after finishing the work and before the material cures.
Safety guidance:
BestSeal B12 may cause irritation to sensitive skin on prolonged contact. Wear a mask, gloves and safety goggles when using the product.
If splashed into the eyes, nose or mouth, rinse immediately with plenty of clean water several times before going to the nearest medical facility for timely and proper treatment.
Dispose of excess product at locations designated by local regulations.