Knauf-Perlfix is used for bonding plasterboards, insulating materials (polystyrene and mineral fiber boards), PS and MF panels to common substrates with rough and absorbent surfaces.

Substrate Preparation
The substrate must be dry, free from dust and other residues.
Check the absorbency of the substrate and remove any formwork oils from the concrete.
Prime porous and smooth surfaces (e.g., exposed concrete).

Mixing
Mix one bag of Perlfix (4.5 kg) in approximately 2.4 liters of clean water without adding other materials and stir with an electric mixer until a homogeneous and lump-free mixture is obtained.

Processing Time
Apply the material within approximately 30 minutes of preparing the mixture.
Dirty containers and tools reduce the processing time.

Application
On uneven surfaces, apply Knauf-Perlfix in trowel strokes at a distance of 35 cm on the plasterboard or surface.

Very uneven surfaces can be leveled by bonding strips of plasterboard with Knauf-Perlfix, or the panels can be bonded to the strips and aligned.
Installation should be done without gaps in the joints.
Containers and tools should be cleaned with water after use.

Storage
Store in a dry environment on pallets.
Damaged bags should be covered and used first.
Storage time is 6 months.