Surface treatment quality depends on humidity. Steel surfaces re-rust within minutes of blast cleaning when relative humidity exceeds 85% — a phenomenon known as flash rust. Coating adhesion fails when applied in humid conditions, and paint curing times extend significantly in moist air. DST desiccant dehumidifiers control the environment inside painting halls, blast rooms, and marine structures, enabling consistent, specification-compliant surface treatment regardless of season, weather, or location.
Most protective coating specifications — including ISO 8502-3 and SSPC standards — impose strict limits on the relative humidity and dew point at which surface preparation and coating can take place. When ambient RH exceeds the permitted level, blast-cleaned steel re-rusts rapidly, coating adhesion is compromised, and the work must be redone.
For contractors working outdoors or in uncontrolled environments, this creates significant scheduling risk — particularly in autumn and winter, or in humid climates. DST mobile dehumidifiers create a controlled, low-humidity enclosure around the work area, allowing blast cleaning and coating to proceed safely at any time of year. The result is faster project completion, fewer rework cycles, and coatings that meet specification — first time, every time.
DST dehumidifiers are deployed across a wide range of surface treatment environments — from automotive paint testing chambers and industrial painting halls to shipyard blast cleaning and marine coating operations. Our mobile and fixed units create the controlled humidity conditions required for specification-compliant work, year-round.
DST’s most extensive automotive testing partnership — spanning wind tunnels, test rooms, climate chambers, and car production at Volvo Cars’ Torslanda facility across 16 years and multiple project phases.
DST supplied humidity control for Scania’s wind tunnel testing facilities in Södertälje, maintaining precise ambient conditions for aerodynamic and climate testing of heavy vehicles.
DST installed painting booth dehumidification at Volkswagen’s Wolfsburg facility, maintaining controlled humidity conditions for automotive body painting and ensuring specification-compliant coating quality.
DST has been supplying dehumidification for surface treatment operations since the mid-1990s — across automotive testing facilities, industrial painting halls, shipyards, and coating operations in Sweden, Norway, Germany, France, the UK, and beyond. Both fixed and mobile units are available, configurable to the required RH setpoint and enclosure size.
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