AREAS OF USE
It is used in masonry for installing AAC blocks (autoclaved aerated concrete). It is recommended for support walls, compartmenting walls and closing walls.
PREPARING THE UNDERLAY
As required, if the working temperature is very high, the masonry elements get damp.
PREPARATION AND DIRECTION OF USE
Pour the contents of a bag into approx. 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 underlay must be clean, firm and even. The mortar is applied with 6 x 6 mm jagged trowel to obtain a continuous adhesive layer (3 mm thickness). The blocks are laid to the adhesive layer so that they have the same level and follow the wall line. The mortar is applied both in the horizontal and the vertical joint between the masonry elements. The position of the masonry blocks can be adjusted within approx. 5 minutes from their laying them in the adhesive mortar. In the case of high temperatures, masonry is protected against fast drying.
TIPS
Apply the adhesive when the air and underlay temperature is between + 5 °C to + 30 °C. Temperatures should not drop below + 5°C while mortar is curing. Never apply on frozen masonry, excessively warm or rain conditions. Weber PL25 does not mix with other materials. The used tools are washed with water immediately after use.
COMPOSITION
Grey cement based powder with quartz sand and synthetic resins. It is easily workable, with high adhesion to underlay and masonry.
TECHNICAL DATA
Water consumption: approx. 6.5 l / bag
Adhesion to support: ≥ 0.5 N / mm2
Bending resistance: ≥ 1.5 N / mm2
Compressive strength: Class M 2.5
Water vapor permeability: 5/20
Capillary water absorption: Class W1
Thermal conductivity in dry state at 10 °C: 0.45 W / mK
Operation time: approx. 90 min
Correction time: 5 min
Apparent dust density: ≈ 1400 kg / m3
Fire resistance: Class A1
Maximum Granulation: 1mm
TERMS OF VALIDITY
12 months from manufacturing date under storage conditions on wooden pallets in dry environment.
