Media guide

Specialised Media Blasting: Shot, Grit, Glass Bead & Soda

Different surfaces need different abrasives. Here’s how each blasting medium works and when we use it.

The right abrasive for the job

Choosing the wrong medium can leave a poor finish or damage the surface. Here’s a plain-English guide to the four main media types and when each is used. Not sure? Send a photo – we’ll recommend the best option for your surface and coating.

01

Shot blasting

Round steel shot
Best for
Cleaning and conditioning steel; removing scale and light rust at speed.
Typical jobs
Structural steel, plate and fabricated parts.
Finish
A cleaned, work-hardened surface with a rounded profile.
02

Grit blasting

Angular abrasive grit
Best for
Stripping heavy rust, mill scale and paint while cutting an anchor profile.
Typical jobs
Industrial steel, tanks, trailers and surfaces to be coated.
Finish
A rough, angular profile that coatings grip.
03

Glass bead blasting

Spherical glass beads
Best for
Fine cleaning and a uniform satin finish without removing much material.
Typical jobs
Stainless steel, aluminium, engine parts and decorative components.
Finish
A bright, smooth satin finish.
04

Soda blasting

Sodium bicarbonate
Best for
Gentle removal of paint, grease and grime from delicate or sensitive surfaces.
Typical jobs
Classic car panels, brick, timber and anything that must not be abraded.
Finish
A clean surface with the substrate left intact.

Quick comparison

MediumMain purposeSuitable surfacesAggressivenessProfile
Shot blastingCleaning, conditioningSteelLow–mediumRounded
Grit blastingRust/paint stripping + profileSteel, cast ironHighRough, angular
Glass beadFine cleaning, satin finishStainless, aluminium, brassLowSmooth satin
SodaGentle paint/grime removalCars, brick, wood, glassVery lowClean, untouched

Which medium do I need?

  • Heavy rust on steel, to be repainted? Grit blasting.
  • Cleaning or conditioning new or lightly rusted steel? Shot blasting.
  • A delicate or decorative component needing a satin finish? Glass bead.
  • Paint off a classic car panel, brick or timber without scratching? Soda blasting.

Media availability varies by job – contact us to confirm the best option for your project.

Recent work

Abrasive blasting steel pipe with grit media
Car body shell blasted with a gentle medium
Timber trusses cleaned with gentle blasting
Steel skip bin blasted with grit to clean metal

Frequently asked questions

How do I know which blasting medium I need?

Tell us the material (steel, aluminium, brick, wood), what you want removed and what happens next (paint, powder-coat, sealing). Send a photo and we’ll recommend a medium.

What is an anchor profile?

A microscopic roughness left by angular abrasive that gives paint and coatings something to grip, improving adhesion and coating life.

Is soda blasting safe for classic cars?

Soda is a very gentle medium commonly used for delicate panels because it removes coatings without abrading the metal beneath. We’ll confirm suitability for your vehicle.

Which media do you offer?

We specialise in shot and grit blasting, and can discuss specialist media like glass bead and soda for specific jobs – ask for availability.

Ready to see your surface restored?

Send us a photo and your location. We’ll come back with a clear quote – on-site or in our workshop.