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Kapazi

Kapfix Primer Flooring

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Even before the self-leveling compound touches the floor, Kapfix Floor Primer is already at work. Water-based and solvent-free, this acrylic primer seals the substrate’s pores, evens out absorption, and creates the bonding bridge that keeps the system intact, from concrete to the final covering. It works on highly absorbent substrates, such as screeds and slabs, as well as on low-absorption glass-like surfaces, such as porcelain tiles and ceramics, eliminating the need for two different products. On floors, apply it undiluted; on concrete, dilute it at a ratio of 3 parts primer to 1 part water. Ready to use, with no elaborate preparation.

Skipping this step is the most common mistake on projects that end in debonding or visible unevenness. Without Kapfix Floor Primer, a porous base absorbs water from the self-leveling compound unevenly, causing bubbles, joints, and leveling defects that compromise the entire job. When applied correctly, with up to 3 hours between coats, Kapfix self-leveling compound finds a surface prepared to bond with a strength of at least 0.5 MPa after just 7 days. This is the step that protects your flooring investment before any covering is installed.

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Guaranteed
adhesion
Solvent
free
Seals
pores
Ready
for use

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Kapfix Primer Flooring

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Even before the self-leveling compound touches the floor, Kapfix Floor Primer is already at work. Water-based and solvent-free, this acrylic primer seals the substrate’s pores, evens out absorption, and creates the bonding bridge that keeps the system intact, from concrete to the final covering. It works on highly absorbent substrates, such as screeds and slabs, as well as on low-absorption glass-like surfaces, such as porcelain tiles and ceramics, eliminating the need for two different products. On floors, apply it undiluted; on concrete, dilute it at a ratio of 3 parts primer to 1 part water. Ready to use, with no elaborate preparation.

Skipping this step is the most common mistake on projects that end in debonding or visible unevenness. Without Kapfix Floor Primer, a porous base absorbs water from the self-leveling compound unevenly, causing bubbles, joints, and leveling defects that compromise the entire job. When applied correctly, with up to 3 hours between coats, Kapfix self-leveling compound finds a surface prepared to bond with a strength of at least 0.5 MPa after just 7 days. This is the step that protects your flooring investment before any covering is installed.

General data

Product type	Water-based acrylic primer
Application	Preparation of substrates for receiving self-leveling mortar
Packaging	18-liter bucket
SKU	PRIPEBRA41
Shelf life	12 months from the date of manufacture, in the original unopened packaging
Supply condition	Ready to use

Performance

Compatible substrates—high absorption	Concrete and screeds
Compatible substrates—low absorption	Ceramic tiles, porcelain tiles, and natural stone
Application temperature—ambient	10°C to 35°C
Application temperature—surface	10°C to 30°C
Time between coats	1 to 3 hours
Number of coats—high-absorption substrates	2 to 3 coats
Number of coats—low-absorption substrates	Up to 2 coats
Dilution—high-absorption substrates	3 parts primer to 1 part water
Dilution—low-absorption substrates	Undiluted (pure product)
System adhesion after 7 days	Equal to or greater than 0.5 MPa

Commercial

Storage	Dry, well-ventilated location, off the ground, with the packaging closed and upright
Maximum stacking	3 buckets

Composition

Base	Polymers in an aqueous medium with special additives
Solvent	Solvent-free

Sustainability

Solvent	None—lower environmental impact formulation
Indoor safety	Suitable for use in enclosed spaces

1	Prepare the substrate Make sure the surface is clean, dry, sound, and free of dust, grease, release agents, loose paint, or any material that could compromise adhesion.
2	Homogenize the product Before use, homogenize the primer with a paddle attached to a low-speed drill (100 to 200 rpm) or manually until a uniform consistency is obtained.
3	Prepare the mixture according to the substrate For highly absorbent substrates (concrete and screeds), dilute the primer in a ratio of 3 parts primer to 1 part water. For low-absorption substrates (ceramic tiles, porcelain tiles, and natural stone), apply the product undiluted.
4	Apply the primer Apply the primer evenly over the entire surface using a brush, broom, or roller. Avoid puddling. On highly absorbent substrates, apply 2 to 3 coats; on low-absorption substrates, apply up to 2 coats.
5	Observe the interval between coats Wait 1 to 3 hours between coats, depending on the weather conditions and substrate absorption. The maximum interval between coats is 3 hours.
6	Apply the self-leveling compound After the final coat of primer, apply the self-leveling compound within the time specified in the system's technical data sheet. Do not exceed the waiting time, as the primer loses effectiveness if the compound is applied after too long an interval.
7	Reapply the primer between layers For multiple layers of self-leveling compound, reapplying the primer between coats is mandatory to ensure system adhesion.

Ideal application conditions

Apply only when the air temperature is between 10°C and 35°C and the surface temperature is between 10°C and 30°C. Avoid application in intense sunlight, rain, strong winds, or on excessively damp surfaces.

Storage after opening

After opening the package, keep it tightly sealed to preserve the product's properties. Store it in a dry, well-ventilated place, raised off the ground, with the package upright.

Why primer is a mandatory step

Without primer, uneven substrate absorption compromises the flow and adhesion of the self-leveling compound, potentially causing bubbles, surface cracks, visible seams, and debonding. Primer is essential for the system's performance and integrity.

Primer Floor Kapfix

Why use Kapfix

The step that ensures perfect adherence of self-leveling mortar and protects your flooring investment.

Guaranteed adhesion

Seals pores and creates a bonding bridge between the substrate and mortar, preventing bubbles, cracks, and detachments after curing.

Works on any base

Suitable for concrete, screed, ceramic, porcelain, and natural stone, replacing two primers with a single product.

Solvent-free, safer

Water-based acrylic formulation, solvent-free, safer for indoor use and with less environmental impact.

Ready to use

Requires no elaborate preparation. Mix quickly and apply with a brush, roller, or broom for practical and efficient results.

Kapfix Primer prepares concrete, porcelain, and ceramic in a single product, sealing pores and creating the adhesion bridge that the self-leveling system requires.

No primer, no guarantee. With Kapfix, the right base for every substrate.

Frequently asked questions

Are there still doubts?

Frequently asked questions

What is this primer for and when should I use it?

Kapfix Primer is a water-based acrylic primer that prepares the surface for Kapfix self-leveling mortar. It seals the pores of the substrate, equalizes absorption, and creates the necessary adhesion bridge for the mortar to bond securely. Application is mandatory before any coat of self-leveling mortar, including between layers when there is more than one application.

How do I apply primer to porcelain or ceramic tiles?

On ceramic tiles, porcelain tiles, and natural stones, the product should be applied undiluted, in up to 2 coats, with a brush, broom, or roller, evenly and without puddles. The interval between coats is 1 to 3 hours, depending on the environmental weather conditions. On concrete and subfloor, dilution is recommended at a ratio of 3 parts primer to 1 part water, applying 2 to 3 coats.

How do I clean my tools after using the product?

Because it is water-based and solvent-free, tools such as brushes, rollers, or brooms should be cleaned with water immediately after use, before the product dries. No special chemical product is required for cleaning. After cleaning, store the tools in an appropriate place to preserve their lifespan.

What is the product's shelf life and how should I store it?

Kapfix Primer has a shelf life of 12 months from the manufacturing date, provided it is stored correctly. Store the bucket in a dry, airy place away from the ground, in an upright position with the original packaging sealed, stacked in piles of no more than 3 buckets. Once opened, keep the packaging tightly sealed to preserve the product's properties.

Does this primer work with any type of foundation?

The product was developed to work on both high-absorption substrates, such as concrete and subfloors, and low-absorption substrates, such as porcelain tiles, ceramics, and natural stones. This dual capability eliminates the need to purchase different primers for each type of base. The ideal application temperature is 10°C to 35°C in the air and 10°C to 30°C on the surface.

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