Primers | BaseTec

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Primers in construction consist of coatings or preparations applied to surfaces before the application of subsequent treatments, such as paints, sealants, adhesives, or coatings. A well-applied primer serves several essential functions, including improving adhesion, enhancing durability, promoting uniformity of finish, and providing corrosion protection.

Epoxy Primers

Epoxy primers are formulated from epoxy resins, which are thermosetting polymers characterised by their excellent adhesion, chemical resistance, and durability.

These products provide strong adhesion to a variety of substrates, including concrete, metal, and masonry. They offer excellent resistance to chemicals, abrasion, and moisture, making them suitable for harsh environments.

Bitumen Primers

Bitumen primers are based on bituminous materials such as asphalt or coal tar, which are known for their waterproofing and adhesive properties.

These products provide excellent waterproofing and adhesion to porous substrates such as concrete, masonry, and asphalt. They penetrate into the substrate and form a waterproof barrier, protecting against moisture ingress.

Acrylic Primers

Acrylic primers are based on acrylic polymers, which are known for their fast-drying, low-odour, and environmentally friendly properties.

These products provide good adhesion to a variety of substrates, including concrete, wood, metal, and plastic. They dry quickly, allowing for rapid application of subsequent coatings or treatments.

Primers for Porous and Non-Porous Substrates

Primers for porous substrates are formulated to penetrate into the substrate's pores, providing a strong bond and promoting adhesion of subsequent coatings or treatments. They help seal the surface and prevent moisture absorption.

Primers for non-porous substrates are designed to improve the adhesion of coatings or treatments to smooth or non-absorbent surfaces such as metal, glass, and plastic. They help create a bonding layer and promote uniformity of finish.

Applications of Primers in Construction

Epoxy primers are commonly used in construction for priming concrete floors, metal surfaces, and structural elements before the application of epoxy coatings, sealants, or adhesives. They help improve adhesion and prolong the service life of subsequent coatings.

Bitumen primers are commonly used in construction for priming concrete and masonry surfaces before the application of bitumen-based waterproofing membranes, roofing materials, or asphalt pavements. They help improve adhesion and enhance the performance of waterproofing systems.

Acrylic primers are commonly used in construction for priming interior and exterior surfaces before painting, sealing, or applying decorative finishes. They help improve adhesion, enhance colour uniformity, and promote the durability of the finish.

When selecting a primer for a construction project, factors such as substrate type, porosity, environmental conditions, and compatibility with subsequent treatments should be considered. It's essential to choose a primer that is suitable for the specific application and performance requirements of the project to ensure optimal results. Additionally, proper surface preparation and application techniques are crucial for achieving effective primer performance.

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If you require assistance with primer products or need advice on which primer is best suited for your requirements, contact our friendly teams in Kent - 01732 906 826 - or Leeds - 0113 521 6789.

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Frequently Asked Questions About Primers

What is a primer, and why is it used in construction?

A primer is a preparatory coating or treatment applied to surfaces before the application of subsequent treatments, such as paints, sealants, adhesives, or coatings. Primers serve several purposes, including improving adhesion, enhancing durability, promoting uniformity of finish, and providing corrosion protection.

What are the common types of primers used in construction?

Common types of primers used in construction include epoxy primers, bitumen primers, acrylic primers, and primers for porous and non-porous substrates. Each type has specific properties and applications depending on factors such as substrate type, porosity, and environmental conditions.

Where are primers typically used in construction?

Primers are used in various construction applications, including priming concrete floors, metal surfaces, masonry walls, and wood substrates before painting, sealing, or applying coatings. They are also used in waterproofing systems, roofing applications, and structural bonding.

How do I choose the right primer for my construction project?

The selection of a primer depends on factors such as substrate type, porosity, environmental exposure, and compatibility with subsequent treatments. It’s essential to consult with manufacturers or construction professionals to determine the most suitable primer for your specific needs.

How long does it take for primers to dry or cure?

Drying and curing times vary depending on factors such as the type of primer, substrate, temperature, and humidity. In general, primers may dry to the touch within a few hours, but full curing may take several hours or days, depending on the product and conditions.

Can primers be used as standalone coatings?

While primers are primarily designed as preparatory coatings, some formulations may provide limited protection and durability as standalone coatings. However, it’s generally recommended to apply a topcoat or finish for optimal performance and longevity.

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