Sika BlackSeal Plus (NZ)
Sika BlackSeal Plus (NZ) is a bitumen based below ground waterproofing membrane.
- Fast cure
- Simple to apply by brush, roller or spray
- Excellent adhesion to concrete, masonry, etc.
- Low water permeability
- Can be applied to green concrete
- Resistant to sulphates and ground salts
Usage
Sika BlackSeal Plus (NZ) has been formulated for use as a waterproof membrane behind retaining walls and as a damp-proof membrane for buried faces of basement structures. Sika BlackSeal Plus (NZ) will cover concrete, concrete block, brickwork and wood.Advantages
- Fast cure
- Simple to apply by brush, roller or spray
- Excellent adhesion to concrete, masonry, etc.
- Low water permeability
- Can be applied to green concrete
- Resistant to sulphates and ground salts
Packaging
4 litre and 20 litre pails
Colour
Black
Product Details
APPROVALS / STANDARDS
Branz Report DC1688: Vapour flow resistance > 90MNs/g
Shelf Life
Twelve (12) months when stored as stated.
Storage Conditions
Store in original containers in a dry place below +35°C and away from frost.
Density
1.00 kg/l
Solid content by weight
60%
Application
Ambient Air Temperature
+5°C to +50°C
Curing Time
Allow each coat to dry 12-24 hours before recoating.
Drying Time
4 to 6 hours at +20°C. (12-24 hours should be left between coatings.)
Consumption
Minimum total application rate is 1litre per m² (in addition to the primer coat). Ideally this should be applied as two full undiluted coats at a coverage rate of approximately 2m²/ litre / coat, depending on the nature of the surface being treated.
SUBSTRATE PREPARATION
- Clean down surface to be treated removing all dust, grease, laitance and foreign matter.
- Remove any form release agent residues and curing compounds by high pressure waterblasting, grit blasting or mechanical wire brushing.
- Grind back smooth any dags or ridges. Any surface irregularities should be filled using Sika MonoTop repair mortars or Sikadur-41 epoxy repair mortar.
- Lightly dampen surface to be treated with water, but ensure that no free water remains.
- Stir Sika BlackSeal Plus (NZ) thoroughly before use.
CONTROL JOINTS:
Movement control joints in concrete or concrete masonry should be sealed with Sika BlackSeal®-1 prior to applying the Sika BlackSeal Plus (NZ). Refer to the Sika BlackSeal®-1 data sheet for details on joint sizes and application methods. For high movement joints refer to the Sika technical department.
