Rivagips BG Ltd

• DERZTEK is a joint compound which is used at ALLEV plasterboard joint tapes.
• DERZTEK‘s application is easy.
• DERZTEK is easy-to-mix.
• Special additives in its structure, retard the absorption of the DERZTEK mortar water by the plasterboard surface.
• Besides its filling function, DERZTEK also forms a smooth surface as a result of its special grain-size distribution.
• It has a high adherence property.
• No cracks will occur at the joints as DERZTEK has a good flexibility. Also, the applied surface behave monolithically.

METHOD OF APPLICATION.

• Surface must be cleaned before the application;
• Put some water in a clean bowl. Sprinkle DERZTEK until it covers the water surface. Wait for a few minutes, then mix the mortar until a homogeneous mixture is achieved. After mixing, the mortar is ready to use. The mortar in the bowl can be used for approximately 1 hour.
• For the application, use steel spatula in two phases.
• Apply abundantly the first layer of DERZTEK, through the width of spatula, on the jointing tape that is firmly pressed just at the centers plasterboard joints.
• Wait at least 2 hour for the setting of the first layer. Before applying the second layer, scrape off the residues on the surface with spatula.
• Apply the second layer approximately 20 cm wide, as aligned with ALLEV plasterboard surface.

RECOMMENDATIONS

• Never mix DERZTEK with any other product or material;
• Use low-speed mechanical mixer;
• Do not add any water or plaster to the mortar after mixing;
• Do not use DERZTEK in temperatures below +5⁰C;
• Pre-filling should be done to the joints that are wider than 3mm;

STORAGE CONDITIONS

• Bags should be store in dry places and should not be stacked in more than 15 layers;
• Direct contract with ground and moisture must be avoided;
• Using DERZTEK within one year after the date of production is recommended. Poor or over-long storage may deteriorate the physical properties of DERZTEK.