AREAS OF USE
It is used for installing ceramic tiles, natural stone tiles and similar materials with normal absorption (Class BII, BIII) with size up to 900 cm (30 x 30 cm) for residential and public use, interior cladding (walls and flooring). It is applied on cement underlay such as: concrete, lightweight concrete, porous concrete, cement plasters, lime plasters, old plasters, cement screeds.
PREPARING THE UNDERLAY
The underlay must be clean, non-deformable, dry, steady and free of anti-adhering substances (grease, bitumen, dust etc.). Concretes must be cured, the screeds must have minimum 28 days curing period and plasters must have medium absorption. Layers with poor mechanical strength will be removed in advance. Irregularities up to 1 cm can be fixed with Weber.set H20 one day before cladding. The faces of the ceramic tiles must be clean, free from traces of grease, oil, dust or other impurities. If the underlay is treated with deep primer Weber GR100 prior to cladding, you should allow it to dry it completely.
PREPARATION AND DIRECTION OF USE
Pour the contents of a bag into approx. 6 – 6.5 liters of clean, cold water and mix with an electric mixer until a homogeneous mixture is obtained, without agglomeration. Leave it like this for approx. 5 minutes, then mix again. The resulting adhesive mortar is applied on the underlay using a grooved trowel. If the support is uneven, the adhesive will be applied to both the underlay and the tile. Tiles are attached to the contact surface by hand pressing, moving them onto the adhesive layer (if necessary using a rubber mallet) until a flat surface is obtained. Tiles should be laid in the adhesive layer within open time (before the crust forms on the surface of the adhesive). For ensuring a suitable contact surface, the adhesive must cover at least 65% of the back of tile. The joints will be grouted after minimum 24 hours, using the Weber.color grout range.
Apply the adhesive when the air and underlay temperature is between + 5 °C to + 30 °C; bad weather (rain, snow, strong wind, direct exposure to sunlight) should be avoided. Cladded surfaces will be protected against frost for 24 hours. Fresh mortar will be removed from the cured surfaces and joints during application, using clean water. Surfaces can be used after minimum 24 hours and can be exposed to medium stress after approx. 7 days. The used tools are washed with water immediately after use.
Grey cement based powder adhesive with mineral additions and synthetic resins, applicable in thin and medium layer.
Tensile strength in bending, dry state: ≥ 0.5 N / mm2
Tensile strength after water immersion: ≥ 0.5 N / mm2
Tensile strength after heat action: NA
Compression resistance after freeze-thaw cycles: ≥ NA
Contraction: <0.5 mm
Working time: approx. 60 min
Open time: approx. 15 min
Adjustment time: approx. 5 min
Cladding are ready to use after: about 24 hours
TERM OF VALIDITY
12 months from manufacturing date under storage conditions on wooden pallets in dry environment.