BestSeal BP411
Highly Elastic Bitumen Polymer Waterproofing Membrane, Water Based, One Component
Advantages:
One component, easy to apply by brush or spray gun, cost-effective.
No primer needed; can be applied on dry or damp surfaces.
Fast drying, forming a continuous and durable coating.
High adhesion and good elongation, able to seal small cracks.
Applicable in enclosed or confined spaces.
Resistant to UV and weather, with good anti-aging when combined with reinforcing mesh.
BestSeal BP411
Technical summary
Category
Waterproofing & Fillings
Highly Elastic Bitumen Polymer Waterproofing Membrane, Water Based, One Component
Technical documents
Product data
| Form | Thick liquid, brown when wet, black when dry. |
|---|---|
| Composition | Bitumen-Acrylic with additives and minerals. |
| Density | 1.15 ± 0.02 kg/liter (25°C). |
| Coverage | About 0.6 kg/m²/coat (apply 2 - 3 coats). |
| Packaging | 04; 18 kg/pail. |
| 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 +05°C / Maximum +35°C. |
| Tensile strength | ≥ 0.5 MPa (ASTM D412-16, cured for 07 days). |
| Elongation | ≥ 500% (ASTM D412-16, cured for 07 days). |
| Adhesion strength | ≥ 0.5 MPa (on prepared concrete) (ASTM D7234-12, cured for 07 days). |
| Waterproofing | No leakage (1.5 bar pressure for 07 days) (BS EN 14891:2017). |
Applications
BestSeal BP411 is used to waterproof items such as:
Below-ground waterproofing layer for concrete and render surfaces.
Flat roof slabs with a protective mortar topping.
Balconies, basements, retaining walls.
Advantages
One component, easy to apply by brush or spray gun, cost-effective.
No primer needed; can be applied on dry or damp surfaces.
Fast drying, forming a continuous and durable coating.
High adhesion and good elongation, able to seal small cracks.
Applicable in enclosed or confined spaces.
Resistant to UV and weather, with good anti-aging when combined with reinforcing mesh.
Application instruction
Surface preparation:
The surface must be thoroughly cleaned of dust, mud, oil/grease, moss/algae, mold, etc.
All surface defects and bumps, hollows and cracks must be repaired properly.
The application surface may be dry or damp, but no standing water should be left on the surface.
Mixing:
The product is pre-mixed; just stir well before use.
Application:
Use a brush, short-nap roller or spray gun to apply BestSeal BP411 over the entire prepared surface as described above at a coverage of 0.5 ÷ 0.6 kg/m²/coat.
Application must ensure the entire surface to be waterproofed is covered with an even, thick coat free of pinholes.
For waterproofing, apply 2 – 3 coats. Wait for each coat to surface-dry before applying the next, in a direction perpendicular or diagonal to the previous coat.
Notes:
Do not apply on surfaces with standing water.
Do not apply in rainy conditions. If it rains during application, stop immediately and promptly cover the freshly applied area to protect it from direct rainwater.
Surfaces subject to direct foot traffic must be covered with a cement-sand mortar mixed with BestLatex R114 or BestLatex R126 after applying BestSeal BP411.
Do not dilute the product with water or any other components.
Close the container tightly after use.
Cleaning:
Clean tools and equipment with clean water immediately after finishing the work while the product is still wet; use solvent once the product has dried.
Safety guidance:
BestSeal BP411 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.