Premium, high-performance, ready-mixed flexible tile adhesive for larger tiles, suitable for interior use in dry and intermittently wet areas.
Weberset SPF is an extra flexible cement-based tile adhesive suitable for walls and floors in wet and dry areas when a standard setting time is required. Can be used on heated and plywood floors, as well as most wall substrates. Suitable for application thicknesses of 3-6mm.
High-performance cementitious adhesive with no vertical slip and extended open time for ceramic tiles and stone materials.
Weberset Rapid SPF is a rapid-setting, flexible, low-dust, cement-based floor and wall tile adhesive, available in light grey or white for interior and exterior use. It is used to fix all ceramic tiles, mosaic, quarry, terrazzo, terracotta, porcelain and natural stone in situations where somemovement or vibration is likely. Can be used on heated and plywood floors. Suitable for use at thicknesses of 3-6mm.
Cement-based rapid-setting adhesive for interior and exterior floor and wall installations of ceramic and porcelain tiles and non-moisture sensitive natural stone.
Two-component high performance flexible rapid set with high strength adhesive for the installation of ceramic, porcelain, natural and agglomerate stone. Ideal for heavy duty commercial and industrial applications, interior and exterior use, balconies, terraces and swimming pools. For use with underfloor heating systems.
Where to use
For bonding all kinds of interior and exterior ceramic tiles, conglomerate, artificial and natural stone and marble on walls or floors. For bonding rubber flooring for cement installations (stalk back or dove-tailed back) on all traditional substrates in interiors, exteriors and in environments subject to heavy traffic.
Some application examples:
Ceramic and vitreous mosaics, single-fired and double-fired ceramic tiles, terracotta, klinker, porcelain tiles, etc.
Reconstructed or artificial stones, natural stone (marble, granite, etc.) which require adhesives with fast drying times.
Bonded or unbonded cement screeds provided they are sufficiently cured.
Underfloor undertile heating installations.
Bonded or unbonded screeds in Mapecem, Mapecem Pronto, Topcem or Topcem Pronto.
Existing floors (ceramic tiles, natural stone, terrazzo tiles, etc.) after cleaning and degreasing. Because of its extraordinary bonding and fast-setting characteristics, Granirapid is particularly suitable for rapid re-tiling jobs or flooring that has to be ready for use within very short times (supermarkets, factories, malls, hospitals, airports, etc.).
Granirapid is a two-component adhesive composed of a special hydraulic and silica sand (part A) and a synthetic rubber latex (part B). Granirapid has particularly fast setting and hydration times so that floors are set to light foot traffic after 3 hours and completely cured after only 24 hours. Granirapid has very low shrinkage and excellent bonding characteristics making it suitable for most difficult substrates. Its mechanical properties make it resistant to impact, vibration, temperature changes, ageing and dilute chemical agents.
Do not use Granirapid!
On walls or floors subject to intense movement (chipboard or wood agglomerates, asbestos cement board, etc.).
On metal surfaces.
On artificial, conglomerate or natural marble subject to exceptional moisture movement, on green marble, certain sandstones and slates. Use Keralastic only.
Preparing the substrate
All substrates onto which Granirapid will be applied must be flat, mechanically strong, free from loose parts, grease, oil, paint, wax, etc. Cementitious substrates must not be subject to shrinkage after the installation of the tiles. During warm weather, renders must be cured at least 1 weeks per centimetre of thickness and cementitious screeds must be cured for at least 28 days, unless they have been made with special MAPEI binders for screeds such as Mapecem, Mapecem Pronto, Topcem or Topcem Pronto. Dampen the surfaces with water to cool down, if they should be too warm from exposure to direct sunlight. Gypsum substrates and anhydrite screeds must be perfectly dry (maximum residual moisture 0.5%), sufficiently hard and free from dust. It is absolutely essential that they are treated with Primer G.
The Granirapid mix is obtained by mixing 25kg of part A with 5.5kg of part B (synthetic rubber latex). If possible, use a mechanical stirrer until a smooth mix is obtained. Always pour the powder part A into the latex part B. Pot life at +20°C is about 45 minutes, but higher temperatures may reduce this time.
Applying the mix
To achieve a good adhesion, first spread a thin coat of Granirapid onto the substrate using the straight edge of the trowel followed immediately with the correct thickness, using the most suitable notched trowel. The general principle to follow when selecting the right trowel is to choose one that gives a coverage to at least 65-70% of the back of the tiles for internal walls and light traffic areas and 100% coverage for heavy traffic areas and all external work. For mosaics up to 5x5cm MAPEI trowel No.4 or 5 is recommended (consumption 2.5-3kg/m²). For normal ceramic wall tiles MAPEI V. notched trowel No.5 is recommended (consumption 3.5-4kg/m²). For floors and any uneven surfaces or tiles with highly profiled ribs or lugs or large format tiles MAPEI V notched trowel No.6 is recommended (consumption 5-6kg/m²). For floors and very uneven surfaces or tiles with highly profiled ribs or lugs or large size tiles MAPEI square notched trowel No.10 is recommended (consumption 8kg/m²), or a Kerafloor trowel (up to 1cm thick). For particularly demanding applications such as exteriors subject to freezing, basins or swimming pools, floors subject to heavy loads or floors to be polished in situ, dove-tailed tiles, or tiles with large stalks or large format tiles, Granirapid should be applied to the back of the tiles (back-buttering). Large format tiles include those over 900cm² (30x30cm).
Installing the tiles
Open time in normal temperature and humidity conditions is about 20 minutes. Unfavourable climatic conditions (strong sun, wind, high temperature, etc.) or a highly absorbent substrate can reduce the time to just a few minutes. Careful checks have to be made to ensure that a skin does not form on the surface of the spread adhesive, which should stay fresh. Wetting the substrate before applying the adhesive helps to prolong open time. Should a skin form, the adhesive will have to be freshened up by re-spreading with the notched trowel. It is not advisable to wet the adhesive with water when a skin has formed because, instead of dissolving the skin, the water will often form an anti-adhesive film. Ceramic coverings laid with Granirapid must not be washed or exposed to rain for at least 3-4 hours and must be protected from strong sunlight for at least 12 hours after laying.
Installing the rubber
The installation of rubber with cement installations must be carried out by back-buttering. Butter with Granirapid, until saturated, the back of the slab and spread Granirapid on the substrate with a No.6 trowel. Apply the slab wet on wet and lightly twist.
Grouting Joints can be grouted after 3 hours with MAPEI cementitious or epoxy grouts, available in various colours. Expansion joints must be sealed with MAPEI sealants.
Surfaces can be polished after 24 hours.
Light foot traffic
Floors are able to take light foot traffic after 3-4 hours.
Ready for use
Surfaces are ready for use after approximately 24 hours. Basins and swimming pools can be filled after 3 days.
Mosaics and small sizes in general trowel No.4: 2.5-3kg/m²
Normal sizes trowel No.5: 3.5-4kg/m²
Large sizes, exterior floors trowel No.6: 5-6kg/m²
Uneven tile backs and uneven surfaces, natural stones trowel No.10: 8kg/m² or more.
|Colour||Component A - Grey, Component B - White|
|Mixing ratio||Component A: 25kg / Component B: 5.5kg|
|Pot life of mix||45 minutes|
|Open time||approx 20 minutes|
|Setting time||2 hours|
|Grouting||after 3 hours|
|Set to light traffic||after 3-4 hours|
|Ready for use||after 24 hours (3 days for basins and swimming pools)|
|Application temp.||+5°C - +40°C|
|Tools cleaning||All tools should be cleaned with plenty of water before the adhesive sets.
After setting, cleaning becomes very difficult, but can usually be helped by solvents such as white spirit or similar.
|Packaging||Component A - 20kg, Component B - 4.4kg|
|Storage||Granirapid component A can be stored 12 months in original unopened packing in a dry place.
Granirapid component B can be stored 24 months. Protect from frost.