Priming is the foundation of a long-lasting, professional-quality finish, ensuring proper adhesion, durability, and moisture protection. But not all primers are created equal. Different surfaces have different needs, and using the wrong primer can be wasteful. 

Learn about the best primers for concrete, various types of timber, and metal. Then learn how to prepare each surface correctly and which primer to choose for a flawless finish.

Why Priming is Important for Paint Longevity

Skipping primer might seem like a time-saver, but it’s often a costly mistake. A well-primed surface ensures strong adhesion, prevents moisture damage, and extends the life of your paint.

• Stronger Adhesion – Paint applied directly to porous surfaces can absorb unevenly or fail to grip properly. Primers create a stable base, ensuring better adhesion and a smoother finish.
• Moisture Protection – Certain surfaces, like concrete and screeds, naturally retain moisture. If this moisture rises through the paint, it can cause bubbling and peeling. A moisture vapour suppressant primer helps prevent this.
• Prevents Absorption Issues – Porous surfaces, such as timber or cement, can soak up paint unevenly, leading to patchy coverage. A primer seals the surface for a uniform finish.
• Cost-Effective in the Long Run – Investing in a high-quality primer saves money by reducing the need for repaints and touch-ups.

Best Primers for Each Surface and How to Prepare Them

Concrete

Preparation: Ensure the surface is clean, dry, and free from dust, grease, or contaminants. Use methods like grinding or pressure washing to remove any surface material.

Primer: Epoxy-based primer or a moisture vapour suppressant primer if moisture is a concern.

Sand & Cement Screed

Preparation: The screed must be fully cured and dry before priming. Remove any loose particles and smooth rough areas.

Primer: Epoxy-based primer for durability. 

Flooring-Grade Asphalt

Preparation: The surface should be clean, free from oil or grease, and lightly roughened to improve adhesion.

Primer: Epoxy-based primer for high durability and chemical resistance.

Timber

Preparation: Sand the surface lightly to create a key for the primer, then remove all dust and debris. Ensure the timber is free from waxes or finishes.

Primer: Acrylic-based primer for standard applications, or epoxy-based primer for areas exposed to moisture or heavy wear.

How to Prime Metal Surfaces with Haymes MetalPlus

Metal surfaces require specialist primers to prevent rust and ensure proper adhesion. Haymes Paint’s MetalPlus range offers premium metal primers tailored for various substrates​.

• MetalPlus Etch Primer – Designed for a wide range of substrates including mild steel, aluminium, grade 316 stainless steel, galvanised steel, zincalume, zincanneal, plus enamel and acrylic lacquer surfaces in sound condition. Provides excellent adhesion and anti-corrosion protection.
• MetalPlus Universal Primer – A multipurpose primer suitable for various metal surfaces including mild steel, aluminium, grade 316 stainless steel, galvanised steel, zincalume, zincanneal and previously painted substrates in sound condition.
• MetalPlus Rust Converter Primer Sealer – Ideal for lightly rusted steel in low corrosion environments. Conveniently seals and primes in one step.

Using the right MetalPlus primer ensures that metal surfaces remain rust-free, well-protected, and ready for topcoats​.

Best Practices for Applying Primers

For a professional finish, follow these essential steps:

• Surface Preparation: Always clean, sand, or abrade surfaces as required. Remove dust, grease, and contaminants.
• Correct Application: Use a brush, roller, or spray, depending on the product’s instructions.
• Allow Proper Drying Time: Follow manufacturer recommendations, as rushing the process can compromise adhesion.

Buy Primer for a Lasting Paint Finish

A great paint job isn’t just about the topcoat, it’s what’s underneath that counts. Using the right primer for the right surface ensures better adhesion, moisture protection, and long-term durability. With Haymes Paint’s expert range of primers, including the MetalPlus collection, you can tackle any surface with confidence.

Get the perfect primer for your next project. Visit your local Haymes Paint stockist for all your painting supplies and more expert advice today.