Bit-Seal 2K is a solvent-free paste consisting of selected water-emulsified bitumen, special fine-graded aggregates and admixtures. Bit-Seal 2K thixotropic consistency makes it easy to use for waterproofing even vertical and sloping surfaces. When completely dry Bit-Seal 2K forms a waterproof plastic coating that is resistant to re-emulsifying after prolonged immersion in water, even when slightly acid or alkaline, and resistant to aggressive agents present in the soil. Bit-Seal 2K meets the requirements for polymer modified bituminous thick coatings, in compliance with EN 15814.
Field of Application
For waterproofing and protecting:
• Waterproofing foundations.
• Waterproofing bearing walls.
COVERAGE / CONSUMPTION
Preparing the substrate
The substrate to be treated must be mechanically robust and clean. Remove all cement laitance, traces of powder, flaky parts, grease, oil, and form release agents by sandblasting or washing down with a high-pressure water pump. If the substrate to be waterproofed and protected with Bit-Seal 2K is in poor condition, remove the damaged parts manually or mechanical abrasion by using a hydro-demolition system or a hydro-scarified. The last technique, which uses high-pressure water, is recommended because the reinforcement rods are not damaged. The structures that are not subject to vibration could cause small cracks in adjacent concrete. Once the rust has been entirely removed by sandblasting, repair with a pre-blended repairing mortar. Absorbent surfaces to be treated with Bit-Seal 2K must be primed with Bit Seal Primer. Existing floors, which are covered in tiles, must be well bonded to the substrate, and the surface of tiles must be free of substances that could compromise the adhesion of Bit-Seal 2K, such as oil, grease, paint, wax, etc. In order to remove material that could affect the adhesion of Bit-Seal 2K, clean the floor with detergents and water. After this, the surface must be treated with Bit Seal Primer.
Preparing the product
The two components which form Bit-Seal 2K are supplied pre-dosed. Mix the thixotropic emulsion component A at a low speed (400 rev/min) until it becomes liquid. Add the powder component B while mixing and continue mixing until a smooth, lump-free blend is obtained. Once blended, the product has a pot life of approximately 2 hours at +23°C.
Applying the product
Bit-Seal 2K must be applied in two layers with a brush or a long-haired roller. Before applying the second layer, wait until the first coat is dry, making sure the product becomes darker with a matt finish. The second layer is applied diagonally to the first one. The final thickness of the two layers of Bit-Seal 2K must be at least 0.8 mm to create a solid, flexible, and continuous film. Ensure there are no interruptions in the film caused by imperfections in the substrate.