Abrasive Blasting

What it is

Abrasive blasting is a surface preparation method that fires abrasive media, such as garnet, glass bead, or aluminium oxide, at a surface under high pressure. The impact strips away old coatings, rust, scale, and contaminants, leaving a clean, uniformly textured surface (or "profile") that paint and protective coatings can grip. It is one of the most thorough ways to prepare a substrate before recoating.

Why it matters

The durability of any paint or coating system is decided long before the topcoat goes on. It is set by the quality of the preparation underneath. A properly blasted surface gives coatings a mechanical key to bond to, which dramatically reduces the risk of peeling, blistering, and premature failure. Skipping or rushing this stage is one of the most common reasons a respray does not last.

Where it is used on a project

On commercial and architectural work, abrasive blasting is often specified for heavily weathered or previously coated surfaces such as steelwork, cladding, curtain walling, and structural elements, where simple cleaning or sanding would not achieve a sound base. The chosen media and pressure are matched to the substrate so the surface is cleaned without being damaged.

How NECC approaches it

As part of our on-site preparation, we assess each surface and select the appropriate blasting method and media for the substrate and setting, controlling dust and overspray so work can go ahead safely on occupied and live sites. Thorough preparation is what allows us to deliver the flawless, long-lasting finishes our coatings are known for.

Yes. With the right containment, media selection, and dust control, blasting can be carried out on live and occupied sites. The method is adapted to the location to keep disruption and mess to a minimum.

Not when it is done correctly. The media type and blasting pressure are matched to the substrate, so contaminants and old coatings are removed without harming sound material beneath.