Primers for microcement Primacem

Primacem® is our line of primers for microcement and other materials such as tile, concrete or tiles, among others. These products are essential as they are the first step in the process of applying microcement. Their function is to facilitate the bond between the existing substrate and the new coating.

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Primapox® 100 FluidComponente A Primapox® 100 FLUID 3.4Kg LQ · Componente A Primapox® 100 FLUID 13.4Kg ADR · Componente B Primapox® 100 FLUID 1.6Kg LQ · Componente B Primapox® 100 FLUID 6.6Kg ADR Buy

8Range
13Packaging
8Technical data sheets

What it is

Our range of primers offers different possibilities and solutions depending on the surface to be coated. A wide range in which we find adhesion promoters primers that meet the specific needs of each substrate so that the result is optimal.

Thus, we have primers for absorbent surfaces, primers for non-absorbent surfaces, tacking effect primers, aggregate primers, epoxy primers, as well as fillers and smoothing putties.

To ensure optimum consolidation, it is important to follow the steps and recommendations for use of each primers for microcement and other substrates that we manufacture.

Below we present the complete repertoire of primers for microcement that form the Primacem® family

100% Solids Epoxy Primer

Primapox® 100 Fluid is a solvent-free epoxy primer with 100% solids content. As a two-component product, it is specially designed for use as a primer and bonding agent on mineral and porous substrates prior to the application of finishes with epoxy, polyurethane or acrylic resins.

Density1.13 ± 0.02 g/mL Component A · 1.03 g/mL (25ºC) Component B
Pot-life (23ºC)20 ± 5 minutes
Shore D Hardness81 (at 7 days)
Drying TimeTouch dry (23ºC): 6 - 8h · Cured (23ºC): 7 days

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This epoxy primer has very low viscosity for substrates with a moisture content equal to or less than 4%. It can be applied using a trowel, notched trowel, rubber float, roller or brush.

Among its qualities, it stands out as an epoxy primer with good chemical, mechanical, and water resistance. Ideal for floors, walls, pipes, and conduits, as well as general maintenance and tanks.

Yield: The performance of the two-component 100% solids epoxy primer Primapox® 100 Fluid will vary depending on the intended use and application, as well as the roughness and porosity of the substrate. In general, it ranges from 0.15 - 0.3 kg/m².
Packaging: Primapox® 100 Fluid epoxy primer is available in containers of: 3.4 kg (Component A) + 1.6 kg (Component B) · 13.4 kg (Component A) + 6.6 kg (Component B)

Download the technical data sheet for Primapox® 100 Fluid here

Packaging

Componente A Primapox® 100 FLUID 3.4Kg LQ Buy
Componente A Primapox® 100 FLUID 13.4Kg ADR Buy
Componente B Primapox® 100 FLUID 1.6Kg LQ Buy
Componente B Primapox® 100 FLUID 6.6Kg ADR Buy

Primer with tacking effect

Primacem® Fix is a ready-to-use primer for microcement with a tacking effect that favours the adhesion of the existing and the new microcement substrate.

pHBetween 8 and 9
Dry to the touchPermanent Tack
Brookfield RVT viscosity at 20ºC (3/20rpm)1700-2200 mPa•s
Maximum thickness60 μm

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A tacking effect primer with high adhesion power and highly recommended as a bonding bridge between new and old concrete and mortar. Water-based product and therefore low sensitivity to water.

A tacking effect primer that is highly resistant to alkalis and adheres easily and quickly to different substrates. It comes in ready-to-use packaging and is applied in one coat by brush or microfibre roller.

Yield: The consumption of Primacem® Fix tackifying primer is 0.10 L/m² with 1 coat.
Packaging: Primacem® Fix tack effect primer is packaged in 5 and 25 litre containers.

Download the Primacem® Fix data sheet here

Packaging

5L Buy

Primer for non-absorbent surfaces

Primacem® Plus is our primer for non-absorbent surfaces prior to the application of, in particular, microcement. A primer which is an aqueous acrylic polymeric polymeric dispersion.

pHBetween 8 and 9
Dry to the touch30 minutes
Density (UNE-EN ISO 2811-1)1.05 ± 0.05 g/cm³
VOC's< 5 g/L

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A primer for non-absorbent, water-based surfaces in ready-to-use packaging. A product that is designed to be applied either by roller or brush in one coat. For tiles, two coats will be necessary.

It is perfect for use on materials such as tiles, ceramics or flagstones. Primer for non-absorbent surfaces completely free of plasticisers, solvents, ammonia and emulsifiers.

Yield: The performance of Primacem® Plus microcement primer on non-absorbent surfaces is 8-12 m²/L.
Packaging: Primacem® Plus adhesion promoter is supplied in 1 and 5 litre containers.

Download the Primacem® Plus technical data sheet here

Packaging

5L Buy

Primer for absorbent surfaces

Primacem® ABS is the primer indicated for microcement on absorbent surfaces. An acrylic dispersion in an aqueous medium that is used as a primer before applying microcement.

PHBetween 7 and 8
Dry to the touch30 minutes
VOC's< 5 g/L
Density (UNE-EN ISO 2811-1)1.02 ± 0.05 g/cm³

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Water-based, this primer for absorbent surfaces is also perfect for use on materials such as plaster or plasterboard. A product free of plasticisers, solvents, ammonia and emulsifiers.

A primer for absorbent surfaces that is packaged ready to use and can be applied by brush or microfibre roller in one coat.

Yield: The performance of Primacem® ABS microcement primer on absorbent surfaces is 8-12 m²/L.
Packaging: Primacem® ABS adhesion promoter is supplied in 1 and 5 litre containers.

Download the Primacem® ABS technical data sheet here

Packaging

5L Buy

Primer with aggregate

Primacem® Grip is an aggregate primer that can be applied to both interior and exterior surfaces. A primer that is based on acrylic resins in aqueous dispersion.

pHBetween 7,5 and 9
Apparent density1,5 ± 0,05 g/cm³
Dry to touchBetween 2-3h, depending on the applied thickness and environmental conditions.
Polymer typeAcrylic

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A primer with aggregate that provides excellent adhesion on smooth or low absorption substrates, generating a rough surface. It is therefore highly recommended for use on plaster, tiles, concrete, ceramic or hydraulic tiles as well as microcement.

A ready-to-use aggregate primer that facilitates anchoring and allows the creation of rough textures. It is applied by brush or roller in one coat.

Yield: The performance of the primer with Primacem® Grip aggregate is 5-3 m²/kg.
Packaging: Primacem® Grip Aggregate Primer is packaged in 5 kg containers.

Download the Primacem® GRIP technical sheet here

Packaging

5Kg Buy

Anti-moisture epoxy primer

Primapox® 100 Barrier is an anti-moisture epoxy primer designed to block rising damp and acts as a vapour barrier. It is noted for its excellent workability, low viscosity and high adhesion to the substrate.

Density (DIN 53 217, T4)Component A 1,13 g/cm³
Viscosity A+B (DIN 53 015)600-800 mPa.s
Pot-life (20ºC)20 minutes
100% Solids

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A two-component, 100% solids epoxy primer that can be applied on wet concrete. It is perfect for avoiding the sticking of tile joints on microcement.

Primapox® 100 Barrier is an anti-humidity epoxy primer compatible with microcement, tiles, ceramics, and even wet concrete, among many other materials.

Yield: The performance Primapox® 100 anti-moisture epoxy primer depends on the intended use and application, as well as the roughness and porosity of the substrate. Typically it is 0.3 - 1 kg/m².
Packaging: Primapox® 100 Barrier is packaged in containers: 3.1 kg (Component A) + 1.9 kg (Component B). · 12,4 kg (Component A) + 7,6 kg (Component B)

Download the Primapox® 100 Barrier data sheet here.

Packaging

Componente A Primapox® 100 BARRIER 12.4Kg ADR Buy
Componente A Primapox® 100 BARRIER 3.1Kg LQ Buy
Componente B Primapox® 100 BARRIER 7.6Kg ADR Buy
Componente B Primapox® 100 BARRIER 1.9Kg ADR Buy

Filling putty

Primacem® Joint is a filling putty specially designed for the purpose of filling the joints of tiles and ceramic tiles, two of the most common materials used in kitchens and bathrooms.

Density1.6±0.1 g/cm³
Application thicknessUp to 4mm per coat
Touch dry5-6 hours
Full drying8-10 hours

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A filling putty that can be applied both indoors and outdoors. Its excellent adhesion, quick drying and sanding properties are some of its most important features.

Primacem® Joint is very versatile. It can be applied on tiles, ceramics, plaster, plasterboard, concrete, bricks and mortar, among other materials. An ideal filling putty for our ready to use microcement, Efectto Quartz.

It guarantees good resistance to water and environmental humidity. It is also a filling paste that is very easy to apply and, after complete drying, retains its flexibility intact.

Yield: Applied on tile joints: - 0,24 kg/m²/mm approx.
Packaging: Primacem® Joint filling putty is available in 1,5 and 3 kg packaging.

Download the Primacem® Joint technical data sheet here.

Packaging

1.5Kg Buy

Bonding primer for mortars

Primacem® Flex is a styrene-butadiene primer designed to serve as a bonding primer between new and old mortars. It significantly enhances the adhesion properties of all types of mortars.

CompositionStyrene-Butadiene
AppearanceMilky white liquid
Non-volatile content (UNE-EN ISO 3251:2020)34-35%
Density (UNE-EN ISO 2811-1)1,02±0,05 g/cm

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A bonding primer for mortars that provides strength, consistency, and reliability to new coatings. It stands out for its easy application and ready-to-use formulation.

Yield: The performance of the Primacem® Flex bonding primer for mortars is 10-12 m²/L.
Packaging: The Primacem® Flex bonding primer for mortars is available in 5L and 25L containers.

Download the technical datasheet for Primacem® Flex here

Technical comparison of the range

Technical comparison of the range (1/2)
	Primapox® 100 Fluid	Primacem® Fix	Primacem® Plus	Primacem® ABS
Density	1.13 ± 0.02 g/mL Component A · 1.03 g/mL (25ºC) Component B	—	—	—
pH	—	Between 8 and 9	Between 8 and 9	—
Dry to the touch	—	Permanent Tack	30 minutes	30 minutes
Density (UNE-EN ISO 2811-1)	—	—	1.05 ± 0.05 g/cm³	1.02 ± 0.05 g/cm³
VOC's	—	—	< 5 g/L	< 5 g/L
Yield	The performance of the two-component 100% solids epoxy primer Primapox® 100 Fluid will vary depending on the intended use and application, as well as the roughness and porosity of the substrate. In general, it ranges from 0.15 - 0.3 kg/m².	The consumption of Primacem® Fix tackifying primer is 0.10 L/m² with 1 coat.	The performance of Primacem® Plus microcement primer on non-absorbent surfaces is 8-12 m²/L.	The performance of Primacem® ABS microcement primer on absorbent surfaces is 8-12 m²/L.
Packaging	Primapox® 100 Fluid epoxy primer is available in containers of: 3.4 kg (Component A) + 1.6 kg (Component B) 13.4 kg (Component A) + 6.6 kg (Component B)	Primacem® Fix tack effect primer is packaged in 5 and 25 litre containers.	Primacem® Plus adhesion promoter is supplied in 1 and 5 litre containers.	Primacem® ABS adhesion promoter is supplied in 1 and 5 litre containers.

Technical comparison of the range (2/2)
	Primacem® Grip	Primapox® 100 Barrier	Primacem® Joint	Primacem® Flex
Density	—	—	1.6±0.1 g/cm³	—
pH	Between 7,5 and 9	—	—	—
Density (UNE-EN ISO 2811-1)	—	—	—	1,02±0,05 g/cm
Yield	The performance of the primer with Primacem® Grip aggregate is 5-3 m²/kg.	The performance Primapox® 100 anti-moisture epoxy primer depends on the intended use and application, as well as the roughness and porosity of the substrate. Typically it is 0.3 - 1 kg/m².	Applied on tile joints: - 0,24 kg/m²/mm approx.	The performance of the Primacem® Flex bonding primer for mortars is 10-12 m²/L.
Packaging	Primacem® Grip Aggregate Primer is packaged in 5 kg containers.	Primapox® 100 Barrier is packaged in containers: 3.1 kg (Component A) + 1.9 kg (Component B). 12,4 kg (Component A) + 7,6 kg (Component B)	Primacem® Joint filling putty is available in 1,5 and 3 kg packaging.	The Primacem® Flex bonding primer for mortars is available in 5L and 25L containers.