A close look at painting cladding
Why cladding deserves attention
Walk around any business park from Leeds to Luton, and you'll see the same story again and again: steel-clad warehouses and offices that looked sharp when new but now appear dull, streaked or weather-stained. For landlords and occupiers alike, this is more than a cosmetic concern.
Once protective coatings begin to break down, the underlying metal becomes vulnerable to corrosion, and repairing the damage costs significantly more than maintaining the surface. That's why metal cladding painting has become such a regular task on facilities managers' schedules. But when the decision looms, spray or brush, the debate is far from academic. The choice influences not just cost, finish and timescale, but also disruption to tenants and the lifespan of the work.
The appeal of spraying large expanses
The rise in cladding spraying over the past 20 years is not hard to explain. Spray rigs deliver a slick, factory-quality finish across large elevations quickly. For a distribution shed or logistics depot with panels reaching 10 metres in height, spray painting can significantly reduce project duration, often by days or even weeks. The atomised paint mist settles into a smooth film, with no roller lines or brush marks that betray manual work.
It's especially effective for high-performance coatings designed for UV resistance and flexibility, which steel cladding urgently needs in Britain's "four seasons in one day" climate. For portfolio landlords looking to quickly enhance the kerb appeal of a whole site, spraying seems a natural choice. The downsides? Weather dependency and overspray risk. Even a light breeze can carry fine droplets onto cars or neighbouring windows, which means containment and careful scheduling are essential.
Where traditional methods win out
Brushing and rolling may feel old-fashioned, yet plenty of situations bring them firmly back into play. Tight courtyards, façades dotted with vents or signage, and office blocks with glazing just inches from the panels are often more safely tackled with hand tools. Brushes can work paint into awkward overlaps and junctions that sprays can miss, while rollers manage mid-sized sections without the airborne drift.
Many industrial paint contractors adopt a hybrid strategy, rolling or brushing the perimeters and spraying only the flat expanses. On sensitive sites such as schools, hospitals, or multi-let business centres, brush-and-roller application also reduces the risk of paint particles spreading where they shouldn't. There's another point worth mentioning: smaller jobs can be more economical done by hand. It isn't always worth mobilising compressors and spray guns for a modest two-storey office that a small team can deal with in a week.
Real-world costs, conditions and compliance
When comparing costs, spraying often appears to be the winner on a cost-per-square-meter basis, particularly for large warehouses. A quicker application means fewer working hours, though these savings may be offset if adverse weather forces repeated delays. Brush-and-roller jobs, while slower, are less affected by weather conditions and can continue under cloudy skies when spraying would otherwise have to stop. For metal cladding painting in harsher environments, such as coastal areas with salt-laden air or buildings in industrial zones with chemical exposure, contractors may specify specialist systems that often rely on spray application to ensure consistency.
It's also important not to forget compliance. Standards such as ISO 12944 outline the protective performance expected for structural steel coatings, and not every decorator is familiar with them. Whichever method is chosen, preparation is the deal-breaker. Pressure-washing, degreasing, priming, and the unglamorous tasks determine whether coatings last a year or a decade. In this domain, the contractor's competence outweighs the method of application, whether a spray gun or a roller.
Picking the method, choosing the partner
So which method is best? There is no universal answer. Wide, uninterrupted cladding elevations lend themselves to cladding spraying. Smaller or more intricate façades are often safer to work on with brushes and rollers. Most jobs nowadays involve both. What matters most is choosing a contractor who can manage either method capably, switching as conditions and design demand. The right firm won't just show up with equipment; they'll assess access, monitor the weather, advise on compliant coatings, and agree on a realistic schedule that minimises disruption.
For businesses, the real test is the longevity of the newly painted surface. While a new coat of paint might impress in the short term, the real value of painting metal cladding lies in its long-term protection of the building's value. It's an investment, not just surface maintenance.