Description
Characteristics & Advantages
• Easy to use with excellent workability and thixotropic consistency.
• Obaproof F2-288 can be applied on a vertical surface without sagging or letting the tiles slip, even when heavy tiles are used.
• Very good adhesion to most common substrates (concrete, cementitious mortar, stone, bricks, etc).
• Very good adhesion to existing tiles.
• Easy to use with excellent workability and thixotropic consistency.
• Tile on tile of existing flooring with tile refurbishment system.
Storage
Store properly in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5C° ~ +35°C. Protect from direct sunlight, rain and water.
Uses
Obaproof F2-288 is a product used for bonding ceramic tiles in continuous thin layers, up to 10 mm thick. Due to its excellent adhesion, it can be used in situations where traditional adhesives for bonding tiles are not suitable due to the type of tile, the substrate or the specific job situation or location.
Obaproof F2-288 is suitable to bond the following types of tile:
• Ceramic, porcelain, homogeneous tiles
• All type of low and high absorption tiles
Obaproof F2-288 can be used on substrates including:
• Concrete and mortar
• Tiled surfaces (walls and floors)
• Underfloor heating
• Bricks
• Large size tiles
• Interior painted walls – if the paint coating is well bonded and sound
Obaproof F2-288 can be used on walls and floors, internally or externally.
Surface Preparation
Weak concrete and cement laitance must be removed. Repairs to the substrate, filling blowholes/voids, must use appropriate products. Wait 24 to 48 hours before tiling. Remove all dust, loose, and friable material from surfaces by brush and/or vacuum. For very porous substrates, or if the temperature is high and humidity low, pre-dampen the surface but avoid standing water. Contact an Obaproof representative for recommended primers on specific substrates.
Application
Obaproof F2-288 is applied using a notched trowel onto the substrate. Choose the size of the trowel that will give the right thickness on the back of the tile.
• For indoor floors: Use Obaproof F2-288 for fixing absorbent tiles up to a maximum size of 10,000 cm² (e.g., 60 x 120 cm).
• For indoor walls and outdoor paving: Use up to 3,600 cm² tiles (e.g., 60 x 60 cm).
• For façades without mechanical clamps: Use up to 2,100 cm² tiles (e.g., 30 x 60 cm or 45 x 45 cm).
Apply a uniform layer of Obaproof F2-288, adjust thickness with a notched trowel, and press the tile firmly into the mortar. Apply adhesive in 1m² sections to prevent skinning, reworking if needed. Use the Tarver Method to ensure no voids and full coverage, with a final adhesive bed thickness of at least 1mm for walls and 3mm for floors. For tiles with lugs, grooves or uneven backing, it may be required to backbutter the tile with adhesive.
Curing Time
Open time: Approximately 30 minutes under normal temperature and humidity conditions. Under unfavourable conditions, the open time might be shorter. If a surface film has developed, pass a notched trowel through the applied adhesive.
Rectification Time: Once the tiles are placed into the mortar, they can be adjusted for approx. 20 minutes (at +20°C).
Curing Time: Once the tiling is completed do not disturb the tiled surface for at least 6-8 hours at 20°C.
Curing Details:
Applied Product ready for use at +25°C:
• Before jointing works: Min. 24 hours
• Before opening to light foot traffic: Min. 24 hours
• Before opening to full traffic: Min. 7 days
Coverage
This depends on the level, profile and surface roughness of the substrate, the size of the tiles and the technique of placing (simple placing or “”back””-buttering).
As a guide, in kilos of powder per m in flat surfaces:
• Mosaics and small tiles : ~ 2.0 – 4.5 kg/m²
• Normal size tiles (200 x 200) : ~ 4.5 – 9.0 kg/m²
• Large size tiles and on external floors (600 x 600 & above) : ~ 9.0 – 13.5 kg/m²
* This may only serve as a guideline. It is highly recommended to run a trial on site to determine the actual coverage.
Mixing
Mixing ratio:
~6.0 to 6.5 litre of water per 25kg bag
Mixing Time:
• Mix thoroughly with clean water for a minimum of 3 minutes.
• Leave material to stand in the container (for a minimum 5 minutes).
• Then remix the material for 15 seconds – the product is now ready for use.
Mixing Tools:
Obaproof F2-288 must be mechanically mixed using a forced action mixer or in a clean container using a drill and mixing paddle (<500 rpm). A normal free-fall concrete mixer is not suitable.
Note
• Cementitious substrates must be at least 1 month old.
• Do not exceed the recommended water dosage. Apply only to sound, prepared substrates. Do not exceed the maximum layer thicknesses.
• Protect freshly applied material from freezing conditions and rain etc.
• If any case whereby marble/granites are used, run trials with Obaproof F2-288 beforehand.
• Do not attempt to dampen the applied adhesive to extend the open time as this interferes with the bond performance.
Cleaning of Tools
Clean all tools and application equipment with clean water immediately after use. Hardened/cured material can only be removed mechanically.
Others
Substrate Quality / Pre-Treatment
Concrete Slabs: Ensure all concrete slabs are fully cured and have a wood float finish.
Rendered Surfaces: Allow rendered surfaces to cure for at least 7 days before commencing tiling.
Surface Variation: The maximum variation in the plane of the concrete must not exceed 5mm over 3 metres for floors and 4mm over 2 metres for walls.
Steel Trowel Finished Concrete: Mechanically abrade steel trowel-finished concrete surfaces before tiling.
Fibre Cement Sheets: When used as an underlay or wall/floor material, fibre cement sheets must be at least 6mm thick. For heavy-duty commercial applications, they should be a minimum of 9mm thick. Install all sheets following the manufacturer’s instructions and relevant standards.
Compressed Fibre Cement Sheets: When used as a floor substrate, they must be 15mm thick. When used as a wall substrate, they must be 9mm thick. Install according to the manufacturer’s instructions and relevant standards.
Gypsum Plasterboard Sheets: When used as a wall substrate, they must be a minimum of 10mm thick. Install by the manufacturer’s instructions and relevant standards.
Expansion joints
Expansion/movement joints must be provided to allow for movement between adjacent building components.They should be as follows:
• In external floors where any dimension exceeds 4.5m
• Around fixed elements in the floor e.g. columns
• In internal floors, where any dimension exceeds 9m or 6m if subjected to sunlight
• On wall surfaces at story heights horizontally and approximately 3m-4.5m apart vertically
• At internal vertical corners
• Around the perimeter of the floor
• Over existing joints in the substrate
• Where two different substrates meet e.g. timber and concrete
Ideally, they should be located over movement joints in the structural background and at structural material changes for example the horizontal joint at the bottom of floor slabs, vertical joints at internal vertical corners, and junctions with columns. Movement joints should go right through the tile adhesive bed to the background and keep free from dirt and adhesive droppings. Movement joints must not be less than 6mm and not wider than 10mm.
Technical Data
• Substrate Temperature: +5°C min. / +40°C max.
• Ambient Temperature: +5°C min. / +40°C max.
• Chemical Base: Cementitious mortar modified with specialized polymers
• Density: Fresh mortar density: ~1.70 kg/l (at +25°C)
• Grading: Dmax: 0.4mm
• Layer Thickness: 3mm min. – 10mm max.
EN 12004 requirement for C2TE classification
Tensile Adhesion Strength (BS EN 1348:2007)
• Standard Condition: ≥ 1.0 N/mm²
• Heat Ageing: ≥ 1.0 N/mm²
• Water Immersion: ≥ 1.0 N/mm²
• Freeze Thaw: ≥ 1.0 N/mm²
• Open Time (EN 1308:1999): ≥ 0.5 N/mm² at 30 minutes
• Slip Resistance (EN 1308:1999): ≤ 0.5mm
Safety
For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety-related data.