BAK-F / Reinforcing / Bonding Mortar for Work in Low Temperature Conditions

Details:

• Suitable for work at low air temperatures ranging from +2°C to +15°C.
• For bonding and reinforcing stone wool and expanded polystyrene insulation boards.
• Cement-based.
• Reinforced with polypropylene fibers.
• Contains additives that improve adhesion and flexibility.
• Water vapor permeable. Water and frost resistant.
• Available in gray.

Application:

Surface Preparation:

• The substrate must not be covered with frost, ice, or snow, and the surface temperature must be ≥2°C.
• The substrate should be dry and firm, with all cracks and voids filled.
• Remove any loose and/or weak layers from the substrate.
• For particularly dense and/or smooth substrates, treat with an abrasive material.
• Water-absorbent surfaces should be primed with SAKRET BG or SAKRET UG primer (diluted at a ratio of 1:3).

Reinforcement of Insulation Boards:

• Apply SAKRET BAK-F to the insulation board in an even layer (up to 5mm), spread with a notched trowel, embed the alkali-resistant reinforcing mesh into the mass, and smooth with a flat trowel to ensure the mesh is fully covered with SAKRET BAK-F.
• If the insulation board is made of mineral wool, first work SAKRET BAK-F into the surface of the board.

Bonding Insulation Boards:

• If the wall is even (irregularity <10mm/m), apply SAKRET BAK-F with a notched trowel (notch size - 10mm) across the entire surface of the insulation board for bonding to the substrate.
• If the wall is uneven, apply SAKRET BAK-F to the edges of the insulation boards (~5cm wide and 2cm high) and place 6 dabs of material on the board surface, then press against the wall.
• If the insulation board is made of mineral wool, first work SAKRET BAK-F into the surface of the board.