LQS PRIMER SB – 2-component solvent-based epoxy primer

ADVANTAGES

• Easy to apply with a short application time.
• Low viscosity allows excellent penetration.
• Excellent adhesion.

APPLICATION

LQS Primer SB is suitable for the following applications:

• Primer for concrete substrates, cement plaster, and epoxy plaster.
• Suitable for surfaces with low to high absorbency.
• Primer for epoxy floor systems.
• Adhesive for self-leveling compounds and plaster.

INSTRUCTIONS FOR USE

Surface Preparation:

Concrete:

• The concrete surface must be dense and have a minimum compressive strength of 25 N/mm² and a minimum bonding strength of 1.5 N/mm².
• The surface must be clean, dry, and free of contaminants such as dust, oil, grease, old coatings, and curing compounds.
• Weak or dusty concrete must be removed. Surface defects such as holes, pores, cracks, and bumps must be repaired and leveled.

Moisture check and primer application (if necessary):

• Check surface moisture, relative humidity, and dew point before application.
• If surface moisture is less than 5%, apply an additional coat of LQS Primer SB epoxy primer.
• If surface moisture is 5% or higher, apply an additional coat of moisture-resistant LQS Primer MB epoxy primer.

Mixing Procedure:
LQS Primer SB is supplied as a two-component system including base component A and hardener component B.

• Before mixing, stir component A thoroughly. Add all of component B into component A and continue mixing for 5–20 minutes until a homogeneous mixture is achieved.
• Do not overmix to prevent air entrapment.
• Use a low-speed mixer (300–400 rpm) or an appropriate mixing tool.

Primer Application:

• Ensure the primer is applied evenly and continuously on the substrate surface.
• For concrete with low to medium porosity, one coat of LQS Primer SB is sufficient.
• For highly porous concrete, apply two coats of LQS Primer SB (with coats applied perpendicular to each other).
• Application tools can include brushes, short-haired rollers, or squeegees.

Cleaning:

• Clean equipment and tools immediately after use.
• Once the primer has cured, it can only be removed by mechanical means.

IMPORTANT NOTES:

• Do not apply LQS Primer SB on surfaces with rising moisture.
• Do not substitute the primer with other products.
• The primer must be applied uniformly over the surface.

SAFETY INFORMATION:

• Personal protection: Wear appropriate protective clothing, goggles, gloves, and masks when handling the product.
• Ecology: Do not dispose of into water sources or soil.
• Transportation: Not classified as hazardous.

Refer to the Product Safety Data Sheet (MSDS) and other related safety documents for more details.