Commercial cladding refurbishment: what it involves

Warehouses, workshops and light-industrial units are often clad in coated metal panels. The factory finish weathers first on the sunniest and most exposed elevations, cut edges begin to rust, and sealant at the laps hardens. When the panels themselves are structurally sound, refurbishment can restore appearance and weather resistance with far less disruption than stripping and re-cladding.

The short answer

Commercial cladding refurbishment restores tired profiled steel or aluminium panels instead of replacing them: the elevations are surveyed, cleaned, repaired at edges, fixings and seams, then recoated in a colour-matched system. It suits units whose panels are sound but faded, chalky or starting to corrode.

Refurbish or re-clad?

The deciding question is whether the substrate is still sound. Chalking, fading, light surface rust, failed seam sealant and isolated impact damage are all treatable. Panels that are perforated by corrosion across wide areas, badly distorted, or no longer meeting the building’s insulation or fire requirements are candidates for replacement. A survey should map conditions elevation by elevation, because many buildings need a mix: refurbishment on most faces and new panels where damage is concentrated, such as near loading bays.

The survey

A proper survey records the panel type, the existing coating and its adhesion, corrosion at cut edges and fixings, the state of seams and flashings, and any water getting inside. Photographs tied to a simple elevation plan make it easy to see what is proposed and where. The survey also identifies how access will work, whether from a mobile elevating platform on the yard or from scaffold where space or ground conditions rule a platform out.

Cleaning and preparation

Coatings only perform on a clean, sound surface. Elevations are washed to remove dirt, algae and chalky residue, often with a pre-treatment for organic growth. Loose paint and corrosion are taken back, and cut edges, which are the most common point of failure on profiled sheets, are prepared and primed. Skipping preparation is the main reason cheap recoating fails early, so ask exactly what will be done at this stage.

Repairs before coating

Corroded or missing fixings are replaced, lap and seam sealant is renewed, flashings are secured and localised damage is patched or the affected panel changed. Lower panels near doors and loading areas often carry impact damage from vehicles and equipment. These repairs are what restore weather resistance; the coating then protects the repaired surface and unifies the appearance.

The coating system

Refurbishment coatings are specialist systems designed for coated metal, normally applied as a primer and finish coat. They can be colour-matched to the existing RAL shade or used to change the building’s appearance. Application depends on dry weather and suitable temperatures, so coating work is usually planned for the drier months. Ask for the product name and the manufacturer’s data so you know what has been applied and how it should be maintained.

Keeping the building working

Most refurbishment happens from outside, so the unit can usually keep trading. Plan around deliveries, yard traffic and parked vehicles, and agree protected zones while cleaning and spraying take place. Tenants and neighbouring occupiers should be told when work is scheduled on their side. On multi-let estates a phased programme, one elevation at a time, keeps disruption contained.

Roof and cladding together

Many units have profiled roof sheets that age alongside the walls, with the same issues at laps, fixings and rooflights. Where a roof is also leaking, it makes sense to look at both while access is organised, but the scopes should be priced separately. Gutters on industrial buildings, particularly valley and box gutters, deserve inspection at the same time because overflowing gutters are a common source of water running down cladding.

What to ask for in writing

Request the survey findings with photographs, the proposed repairs, the preparation method, the coating system and colour, access arrangements, programme, and the documentation you will receive on completion. Where only some elevations are being treated, the quote should state which ones. Clear scope lets you compare refurbishment and replacement on an equal basis.

FAQs

Can profiled metal cladding be painted?

Yes, with a specialist coating system over properly cleaned and prepared panels. Ordinary paint is not suitable.

Does the building need to close during refurbishment?

Usually not. Work is done from outside and can be phased around deliveries and yard use.

Can the colour be changed?

Yes. Coatings can match the existing RAL colour or change it, subject to the product chosen.

When is replacement better than refurbishment?

When corrosion has perforated panels over large areas, panels are badly distorted, or the building needs different insulation or fire performance.

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