Description
Characteristics & Advantages
• Water-based
• Low VOC
• Applicable on damp surface
• Moisture Cure
• Good Bonding Strength
• High Elongation
• Good Waterproof
• Easy To apply
• Seamless
Application Area
• RC Flat Roof
• Car Porch Roof
• Bathroom
• Aircon Ledge
• Balcony & Yard
• External Wall
• Metal Roof & Gutter
• Exposed Area with Slope
Application Tools
• Brush
• Roller
• Broom
• High Pressure Single Hose Spray Machine
Storage
Store properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C.
Uses
• Waterproofing of flat (horizontal) roofs and on other types of substrates, including concrete decks/roof, asbestos roof, roof tiles (either concrete or clay type), cement mortar, metal / zinc roofs, tiles.
• Waterproofing layer under tiles, e.g. balcony.
• Vertical wall coating against surface water infiltration, bricks with plaster layer, mortars, roof tiles, repair of tiles and zinc eaves.
Surface Preparation
Clean the dusty surface, grime, oil etc. Apply Obaproof CM-700wp priming coat with nap roller or airless spray. Apply neat top coats of Obaproof WP-200HD. Install fibre reinforcement for better performance.
Application
Before waterproofing, conduct a 24-hour structural ponding test by filling water up to the construction joint in the vertical wall area and repairing leaks with PU grouting injection. For the primer coat, mix 1 part Obaproof WP-200HD with 3 parts water, and apply a thin layer at 0.2kg/m². After 1-2 hours, apply the first coat of Obaproof WP-200HD (0.75kg/m²), even on wet or damp surfaces, stirring slowly with an electric mixer and adding up to 10% water if needed. For the second coat, stir the material again, ensuring the fibreglass net (if any) is fully covered by applying 1kg/m², and avoid exceeding 2kg/m² per coat to prevent cracks and peeling. Allow the primer coat to cure for 1-2 hours, the first coat for 6-8 hours, and the second coat for 8 hours until fully cured. Ponding tests are not recommended for acrylic base coatings; however, if necessary, conduct a maximum 24-hour water ponding test.
Curing Time
Primer coat: 1-2 hours.
1st coat: 6-8 hours.
2nd coat: 8 hours till fully cure.
Coverage
On roofs and terraces: at least 1.5kg/m² in two or more coats, depending on the substrate.
On vertical side walls: at least 1kg/m² applied in two coats.
Must be applied in a minimum of two coats.
Note
• To apply the Obaproof WP-200HD as expose type waterproofing system, a lay to fall RC or cement screed without water ponding & an additional layer of fiberglass net or fiberglass mesh reinforcement will maximise the performance of the material.
• To avoid blistering of the coating, the first coat application must be of thin coating and allowed to dry for at least 4 hours before the second coat can be applied.
Technical Data
• Solid Content: 70%
• Density: 1.2
• Elongation at break (ASTM D412): > 482.8%
• Crack bridging: 1.2mm
• Tensile strength (ASTM D412): 6.5Mpa
• Tear strength (ASTM D624): 54kgf/cm²
• Coverage:
Wall: 0.5kg/m²/coat
Floor: 0.75kg/m²/coat
With fibre net: 0.85kg/m²/coat
Minimum in 2 coats application.
• Dry film thickness:
Wall: 0.8mm (1kg)
Floor: 1.2mm (1.5kg)
With fibre net: 1.5mm (1.7kg)
Safety
• Applicator are recommended to wear gloves, mask and goggles during application.
• In case of contact, wash the affected area with water and soap.
• No food or beverages allowed during application.
• Keep the material away from children.
