What is a primer, and why and when should you use it?

A primer is a coating applied directly to the surface before the final paint finish.

Its purpose is to penetrate the surface pores, seal and protect the substrate, improve water resistance where required, and ensure strong adhesion with a smooth, uniform final result.

Choosing the right primer plays a key role in extending the life of the paint system and helps prevent issues such as peeling, uneven coverage and reduced adhesion.

Guided by the specific requirements of each surface, Superlux offers a range of high-technology primers for interior and exterior use.

Desmo solvent-based

Desmo solvent-based is a transparent, colourless, acrylic-based insulating primer for architectural paints.

It is suitable for surfaces that will be coated with:

• emulsion paints,
• water-based or solvent-based acrylic paints,
• textured coatings,
• insulating materials,
• and decorative render finishes.

It can be applied to:

• concrete,
• plasterboard,
• render,
• plaster,
• wood,
• MDF,
• brick,
• as well as old surfaces with adhesion problems.

It stands out for:

• its high penetrating ability,
• strong adhesion,
• water-resistant properties,
• and its ability to isolate dirt and stains, preventing them from bleeding through to the final paint finish.

It is an ideal solution for priming before the final coat of paint and replaces traditional linseed oil-based priming methods.

Water-based and acrylic primers

Desmo water-based is a transparent, micronised acrylic water-based primer based on new-generation technology.

It is:

  • odourless,
  • environmentally friendly,
  • and safe for the user.

It is recommended for emulsion and acrylic paints for interior and exterior use, and is ideal for preparing new surfaces.

It is particularly recommended for surfaces containing:

  • lime,
  • adhesive residues,
  • or old, low-quality paints.

It stands out for:

  • its high penetrating ability,
  • strong adhesion,
  • and excellent insulating properties.

It is an excellent choice for:

  • children’s rooms,
  • schools,
  • and hospitals.

Acryl Bond

Acryl Bond is an acrylic-based primer for acrylic and emulsion paints, and can be diluted up to 300–400% with water.

It is suitable for all surfaces and all water-based paints.

It provides:

  • very good adhesion,
  • high penetrating ability,
  • protection against moisture,
  • and excellent resistance to weather conditions.

It is particularly effective on alkaline surfaces such as:

  • cement,
  • and bare concrete.

When is a primer needed?

<p>On a new surface to be painted, the use of a primer is considered essential.</p>

<p>On previously painted surfaces, however, it is important to first assess the condition of the wall before deciding whether priming is required.</p>

<p>The fact that a surface has already been painted does not necessarily mean that it is in good condition, or that it will not present adhesion or uniformity issues.</p>

<p>Walls with:</p>

<ul>
<li>dirt,</li>
<li>dampness,</li>
<li>flaking or unstable areas,</li>
<li>or old, poor-quality paints,</li>
</ul>

<p>require proper preparation, thorough sanding and the application of a suitable primer before repainting.</p>

<h3>In summary</h3>

<p>Correct priming is essential for:</p>

<ul>
<li>strong adhesion,</li>
<li>a uniform final finish,</li>
<li>a longer-lasting paint system,</li>
<li>and the prevention of future problems.</li>
</ul>

<p>Do not underestimate its importance, as it can help prevent significant surface damage and repeated repair work in the future.</p>