Shotblasting
To learn more about Shotblasting please read below:
Shotblasting is a key surface preparation method that uses high-speed abrasive particles to clean steel. It removes rust, old coatings, and contaminants, leaving a textured finish that ensures maximum adhesion for new intumescent paint. The process also helps meet fire protection standards and prolongs the life of the protective system. Whether it’s for refurbishment or new installs, proper shotblasting is crucial for long-term performance.
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Why Shotblasting Matters
Proper preparation is essential for any fire protection system to perform as intended. Here's why shotblasting is so important:
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Essential Surface Prep – Intumescent coatings rely on a clean, profiled surface to adhere properly. Poor surface prep can cause coating failure, reducing fire resistance.
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Meets Fire Standards – Many fire protection specifications require steel to be prepared to a certain cleanliness and roughness grade, typically SA 2.5 according to ISO 8501-1.
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Extends Lifespan – A well-prepared surface improves the lifespan of the fire protection system and reduces maintenance or early recoating.
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Versatile – Shotblasting can be used on structural steel in a range of environments, from construction sites to industrial refurbishments.
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Investing in high-quality shotblasting is a step that pays off in fire safety, compliance, and overall finish.
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Our Shotblasting Process
We follow a detailed, controlled process to deliver consistent and high-quality results:
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Site Assessment & Inspection – We begin with a detailed assessment of the steel structure and discuss project requirements, including fire protection standards and surface condition.
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Surface Analysis – We evaluate the existing condition of the steel, identifying rust grades, previous coatings, and contaminants.
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Blasting Grade Selection – Depending on the spec, we blast to a cleanliness level like SA 2.5 or SA 3, creating the ideal surface for intumescent paint.
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Abrasive Blasting – Using industry-grade equipment, abrasive materials are propelled to clean and texture the surface thoroughly.
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Dust & Debris Removal – Following blasting, surfaces are vacuumed or blown down to remove remaining particles. We also take steps to manage dust and minimise environmental impact, using dust extraction systems and containment where needed. Responsible disposal of waste materials and adherence to environmental guidelines is part of our commitment to sustainable practices on every job.
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Quality Check & Surface Profile Measurement – We inspect the finish using gauges and visual standards to ensure compliance.
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Optional Priming or Coating – Once blasting is complete, we can apply primers or base coats to prevent flash rusting before intumescent application. This step helps seal the freshly prepared surface, giving added protection if there's a delay before coating.