Kerakoll Biofast 20Kg – Pallet Deals and Bulk Buy – C2TE Rapid Setting Mineral Adhesive Grey / White

The amount of water to be added, indicated on the packaging, is an approximate guide. It is possible to obtain mixtures with consistency of variable thixotropy according to the application to be made.

Application

To guarantee structural adhesion it is necessary to apply a layer of adhesive sufficient to cover the entire back of the coating material. Large, rectangular sizes with sides > 60 cm and low thickness sheets may require adhesive to be applied directly to the back of the material.
Check samples to make sure the adhesive has been transferred to the back of the material.

Create elastic expansion joints:
– ≈ 10 m2 in external applications,
– ≈ 25 m2 in internal applications,
– every 8 metres in long, narrow applications.
Respect all structural, fractionizing and perimeter joints present in the substrates.

Special Notes:

• Pre-treatment of special substrates

Gypsum-based plasters/renders, anhydrite screeds and cellular concrete, for internal use: Primer A Eco Vinyl sheets for interior use: Keragrip Eco
Please see the technical data sheet on how to use the Primers properly.

• Materials and special substrates
  Marble and natural stone: materials that are subject to deformation or staining due to water absorption require a quick-setting or reactive adhesive.
  Marble and natural stone in general may have characteristics that vary even with reference to materials of the same chemical and physical nature. For this reason it is essential you consult Kerakoll Global Service to request specific indications or to carry out a test on a sample of the material.
  In the absence of specific indications from the manufacturer, natural stone slabs with reinforcement layers, in the form of resin coating, polymer mesh, matting, etc. or treatments (for example damp courses, etc.) applied on the laying surface must be tested in advance to ensure they are compatible with the adhesive.
  Check for the presence of any really consistent traces of rock dust created during cutting, and remove them if found.
  Waterproofing products: adherent and floating polymer sheets, liquid bitumen and tar-based sheets or membranes require application of a laying screed on top.
• Special applications

Insulating and soundproofing panels applied using spot adhesion as recommended by the manufacturers. Plasterboard and fibro-cement slabs must be firmly anchored to specific metal frames.

• Do not use

On metal, plastic or resilient materials, deformable substrates or subject to vibrations.
On screeds, plasters/renders, concrete not yet cured and affected by important drying shrinkage. On organic-based waterproofing products (such as RM according to EN 14891).
On smooth prefabricated concrete.

Attention

Product for professional use
– abide by any standards and national regulations
– do not use the adhesive to correct substrate irregularities greater than 15 mm
– protect from direct rainfall for at least 6 hrs
– the temperature, ventilation and absorption of the substrate and covering materials, may vary the adhesive workability and setting times
– use the right size of toothed spreader for the format of the tile or slab
– guarantee a full-bed in all external laying operations
– if necessary, ask for the safety data sheet
– for any other issues, contact the Kerakoll Worldwide Global Service