SikaCeram®-750
(former MasterTile® 750)
2 COMPONENT, POLYURETHANE RESIN TILE ADHESIVE
SikaCeram®-750 is a solvent-free, two-component polyurethane tile adhesive for laying of ceramic tiles and natural stones on critical substrates such as metal, PVC and plastic-based layered panels. Suitable for use in hot and tropical climatic conditions.
- Deformable and hard-elastic
- Fast and shrinkage-free curing
- Groutable after approx. 3 hours, able to bear weight after approx. 12 hours
- Suitable for laying of porous natural stones
- Especially suitable for fast-track tiling, e. g. for refurbishment work with only short interruptions in operation
- Flexible, adaptable to variations in temperature and expansions in the substrate
- Reliable bond to impermeable, smooth and vibrating substrates
- Impermeable to water and, to a sufficient degree, to water vapor
- Prevents moisture absorbing
Usage
- For indoor and outdoor use
- For walls and floors
- For laying ceramic tiles, porcelain mosaic, brick tiles, clinker bricks, fully vitrified tiles and non-moisture sensitive natural stone tiles.
- In swimming pools, pool surrounds, wet rooms and cold storage depots
- On cement screeds, ground anhydrite and/or gypsum based floated screeds, precast concrete elements, aerated concrete, heated screeds, plasterboards, gypsum fiber boards, dry screeds, insulation boards, plaster slabs and plaster.
- For renovating old houses, prefabricated houses, for interior finishing and kitchen worktops
- On impermeable, smooth and vibrating substrates, e.g. old ceramic, natural stone, aluminium, steel, PVC covering and polyester substrate
- For bonding thick layers of non-structural, dry building elements
- For bonding non-structural, dry steel elements
- For fixing of glue injectors
- For fast-track tiling work, such as renovation of natural stones and ceramic coverings in residential buildings and commercial buildings, prefabricated houses, with only short interruptions in operation
- For tile-on-tile application (contact Sika representative for further information)
Advantages
- Deformable and hard-elastic
- Fast and shrinkage-free curing
- Groutable after approx. 3 hours, able to bear weight after approx. 12 hours
- Suitable for laying of porous natural stones
- Especially suitable for fast-track tiling, e. g. for refurbishment work with only short interruptions in operation
- Flexible, adaptable to variations in temperature and expansions in the substrate
- Reliable bond to impermeable, smooth and vibrating substrates
- Impermeable to water and, to a sufficient degree, to water vapor
- Prevents moisture absorbing
Packaging
5 kg set (Part A + Part B)
Colour
White
Product Details
CERTIFICATES AND TEST REPORTS
SikaCeram®-750 meets the requirements of EN 12004-1 for class R2T.
Composition
Polyurethane resin
Shelf life
12 months from date of production
Storage conditions
Store in undamaged, original sealed packaging in dry conditions at temperatures between +5°C and +23°C. Protect from direct sunlight, heat and moisture.
Density
~1.55 -1.61 kg/l (mixed, at 25°C)
Shear adhesion strength
| Initial | ≥ 2.0 N/mm² |
| After thermal shock | ≥ 2.0 N/mm² |
| After water immersion | ≥ 2.0 N/mm² |
Service temperature
-30°C min. / +80°C max.
Reaction to fire
Class E
Application
Layer thickness
1 mm min. / 5 mm max.
Ambient air temperature
+10°C min. / +40°C max.
Dew point
Beware of condensation.
Substrate temperature during application must be at least 3°C above dew point.
Substrate temperature
+10°C min. / +40°C max.
Substrate moisture content
< 4 % pbw moisture content
Test method: Sika®-Tramex meter, CM - measurement or Oven-dry-method. No rising moisture according to ASTM D4263 (Polyethylene-sheet).
Pot Life
~45 min at 23°C and 50 % relative humidity.
Higher temperatures reduce, lower temperatures increase the times given.
Open Time
~30 - 40 min at 30°C and 50% relative humidity.
Higher temperatures reduce, lower temperatures increase the times given.
Application time
Working time: ~30 - 40 min at 30°C and 50% relative humidity.
Higher temperatures reduce, lower temperatures increase the times given.
Applied product ready for use
| Light foot traffic | ~3 hours |
| Groutable | ~3 hours |
| Able to bear weight | ~12 hours |
Note: When applied on slightly absorbent substrates. Values determined in laboratory conditions: +23°C ± 2°C, R.H. 50 % ± 5 %. Higher temperatures will reduce the indicated waiting times, lower temperatures will increase the indicated waiting time.
Consumption
Consumption and coverage depends on the surface profile and roughness of the substrate, size and reverse profile of the tiles and the placing technique (simple placing "floating" or back to back “buttering-floating”).
As a guide for simple placing technique:
| Required notch size: | Quantity of mixed material: | Theoretical coverage per 5 kg set: |
| 4 mm | ~1.8 kg/m2 | ~2.7 m2 |
| 6 mm | ~2.3 kg/m2 | ~2.1 m2 |
| 8 mm | ~3.0 kg/m2 | ~1.6 m2 |
| 10 mm | ~4.2 kg/m2 | ~1.1 m2 |
| Solid bed application | ~1.6 kg/m2/mm thickness | ~3.1 m2 at 1 mm thickness ~1.5 m2 at 2 mm thickness |
Note: All figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.
SUBSTRATE PREPARATION
- The substrate must be clean and dry. Dirt, grease, oil, wax, old coatings, floor cleansing agents, gypsum-based patching compounds etc. must be completely removed.
- The subsurface must comply with the relevant standards, comply with information sheets and guidelines (suitable age and residual moisture).
- Steel and other metal substratesmust be degreased (e.g. with Xylene / MEK / Acetone solvent), derust and treated with rust protection (e.g. SikaCor® EG-1 Plus).
- Old, waterproof adhesives must be removed mechanically.
- Dewax old PVC coverings and thoroughly clean them (if necessary grind).
- Mechanically roughen old polyester and GRP surfaces and clean with suitable thinner (e.g. Xylene / MEK / Acetone solvent).
- Old, fixed ceramic coverings must be detaly cleaned (black pad).
- Absorbent cement or calcium sulfate-bound substances should be primed with suitable primer. Contact Sika's technical service advisor.
MIXING
Add hardener component to base component and thoroughly mix until a homogeneous, streak-free material mix is acheived, using a mechanical mixer attached to an electric drill (~300 rpm). Avoid overmixing. Transfer material to another clean mixing container and re-mix. Mix full units only, do not split the kit. Do not mix more material than can be applied within it's pot life.
APPLICATION
- Spread small portions of mixed SikaCeram®-750 onto the substrate to be tiled to allow the reaction heat to dissipate.
- Apply a thin scratch coat using the straight edge of the trowel.
- Using the notched edge of the trowel, comb as much SikaCeram®-750 onto the scratch coat as can be covered with ceramic tiles within it's pot life.
- Place tiles and adjust to correct position. Heavy vitrified tiles and/or large format tiles should be wedged if necessary.
- Before tiling on moisture-sensitive substrates, apply a layer of SikaCeram®-750 directly onto the substrate to produce a water-impermeable layer. The layer must be at least 1.5 mm thick and pore free. Seal pipe culverts, corner joints and floor/wall junctions with appropriate type of SikaCeram® WP Tape. Use SikaCeram®-750 to fix SikaCeram® WP Tape.
- Large-size vitrified tiles, not subject to mechanical loads, can be laid by applying dots or stripes to the reverse side of the tiles. When applying the dot and dab method, put palm-sized dots at the corners and in the center of the tiles and spread the adhesive to a uniform thickness using the notched edge of the trowel. The joints must stay free from adhesive. Press tiles into the substrate, adjust them to correct position with a twist and slide motion using battens.
- In case of lath construction and completely level substrates, apply stripes of SikaCeram®-750, approx. 10 cm wide, to the lath work and/or reverse of the tile and spread to a uniform thickness using the notched edge of the trowel.
CLEANING OF EQUIPMENT
Clean all tools and application equipment using a suitable thinner (Xylene / MEK / Acetone), immediately after use. Hardened / cured material can only be removed mechanically.