•  Prevents the plaster from cracks as a result of fast absorption of plaster liquid through the surface
• Prevents air bubbles formation on the surface
• Balances the tensile and drying durations of all kinds of gypsum-based plaster
• Enables curing without cracks by increasing adhesion strength
• Skin-forming happens when dried completely
• Resistant to water, constant humidity and frost after hardened
• Reduces the consumption of the materials to be applied on Bostik ContactPrimer as it increases the adhesion strength of the surfaces
• Gypsum, cementitious and anhydrous plaster, mineral plaster and paint can be applied on
•  Fireproof

Areas of applications:

• Indoors and outdoors
• On walls, ceilings and floors
• On all kinds of stone and stone derivative bricks, pumice concrete, briquette, aerated concrete, concrete plates and exposed concrete
• Under the external thermal insulation composite systems and non-absorbent surfaces

ContactPrimer is a dispersion-based gypsum and cement plaster primer for exposed concrete surfaces and nonabsorbent surfaces that contains mineral fillings and enables the coat to be applied afterwards freezing without cracks and increase the capacity to adhere on the surfaces by balancing the absorbency of surfaces.

Preparation of the substrate :

• The application surface should be durable, crack-free and able to bear a burden.
• The substances such as dust, residues of cement and paint, and grease and mould oil should be removed from the surface.
• Damaged, worn and weak surfaces should be cleaned from the application surface.
• The application surface should not be more humid than necessary.
• Combing very slippery surfaces such as exposed concrete or glazed concrete are recommended prior to application.

Application:

• Bostik ContactPrimer should be mixed with a low cycle mixer until a homogenous colour is obtained.
• The obtained mixture is applied on the surface with a paint brush or roller brush.
• During the application, do not let lump formation and stir frequently.
• According to the surface specifications, air-conditioning and drying times should be checked carefully.

Coverage: Approx. 0,2 kg/m² for each layer.

* The coverage amounts are theoretical and it is recommended to do coverage-controlled sample application before treatment.

Storage:

• They should be protected from frost and adverse air conditions.
• They should be kept in a dry and cool place.
• The opened products should be closed immediately and the drums left open should be disposed.
• Shelf life is maximum 12 months.