Preparation of the concrete base is the main stage on which the durability of any coating depends: paint, self-leveling floor or protective systems. A mistake at this stage means peeling, dusting and destruction of the finish. That is why the choice of primer should be based not on “versatility”, but on the task to be performed.

Let's look at the main types of primers and where each one works best.

1. Vapor-permeable primer Teknobond 120

Primer for “difficult” operating conditions, for damp rooms and if there is no or no high-quality waterproofing.

This is a water-based vapor-permeable primer that is used where it is important to keep moisture from escaping from the substrate.

When to use:

  • under vapor-permeable coatings

  • in rooms with high humidity

  • when there is no high-quality waterproofing

  • external and internal works

Features:

  • water-based

  • solvent-free

  • keeps concrete “breathing”

This is a choice when the base is “alive” and can release moisture.

2. Teknobond 300 epoxy primer

Primer with maximum strength for industrial loads.

This is a solvent-free epoxy primer.

When to use:

  • industrial floors

  • warehouses, workshops, parking lots

  • for epoxy and polyurethane systems

Technical specifications:

  • Compressive strength: 90 MPa

  • Flexural strength: 30 MPa

  • Adhesion to concrete: 4 MPa

  • Adhesion to metal: 3 MPa

  • Hardness: Shore D 83

  • Temperature resistance: up to +80°C

This is “heavy artillery” for the most robust systems.

3. Teknobond 307 low viscosity primer

Deep penetration and universal base.

Universal solution for concrete and cement substrates before epoxy/polyurethane systems.

When to use:

  • concrete foundations

  • cement screeds

  • as a base primer before finishing coats

Characteristics:

  • Compressive strength: 70 MPa

  • Flexural strength: 20 MPa

  • Adhesion to concrete: 4 MPa

  • Adhesion to metal: 3 MPa

  • Hardness: Shore D 83

  • Solvent-free

Optimal balance of “penetration + strength”.

4. Teknobond 310 Universal Strengthening Primer

Adhesion + surface reinforcement

This is an epoxy primer with low viscosity and special additives to increase the strength of the base.

When to use:

  • strengthening of weak concrete

  • as an adhesive layer

  • possibility of use as a rough soil with quartz sand

Characteristics:

  • Compressive strength: 50 MPa

  • Flexural strength: 25 MPa

  • Adhesion to concrete: 3.5 MPa

  • Adhesion to metal: 3 MPa

  • Solvent-free

When you need to not just “prime,” but strengthen the foundation.

5. Polyurethane primer Teknobond 110

Deep penetration and stabilization of weak bases

Ready-to-use solvent-based polyurethane primer.

When to use:

  • dusty, fragile surfaces

  • weak or old concrete

  • wood and mineral bases

  • when deep stabilization is needed

Features:

  • penetrates deeply into the base

  • creates a waterproof film

  • high hardness (Shore A > 95)

  • stabilizes surface dusting

The best choice for “problem” surfaces.

How to choose the right primer? 

Primer is not a step that can be skipped, but the foundation of the entire coating system. The right choice of primer during the preparation stage of the concrete surface determines whether the coating will last for years or begin to deteriorate in months.