Newark-on-Trent sits where the A1 meets the A46 and the East Coast Main Line, and the industrial stock has grown up around that freight position: distribution units, manufacturing space and trading-estate workshops, most of them roofed in profiled metal that has been weathering for decades. If you run estates or facilities for one of these buildings, the live question is rarely whether the roof is ageing. It is whether a coating buys you years at a sensible cost, or whether the metal has gone too far. A survey is the only honest way to tell the two apart, and it is far cheaper than discovering the answer through a leak.
How profiled metal roofs around Newark age
Profiled steel is a sound roofing material, but it ages in a predictable way. The factory finish chalks and fades under UV, fixing washers harden and split, and laps that stayed dry for twenty years start to weep in driven rain. The exposed position of many units along the A1 corridor means wind-driven wet finds every weakness in a roof, working into side laps and around fasteners that have lost their seal. None of that means the sheet is finished. In most cases the steel still has years left in it, provided the surface is protected before corrosion gets properly established underneath the old coating. The job of a survey is to confirm that the substrate is sound enough to justify the work.
Cut-edge corrosion: where it usually starts
On warehouse and factory roofs the defect we find most often is cut-edge corrosion. Wherever a sheet was cut, at the rolling works or on site, the bare steel edge carries no protection. Water sits in the side and end laps, rust tracks back from the edge, and over time it lifts the finish and thins the metal. Caught early it is routine work: edges are mechanically prepared, treated and sealed with a dedicated cut-edge system before the full roof coating goes on. Left for two or three more winters, it perforates the sheet and turns a coating job into a strip-and-replace job at far greater cost. The whole point of catching it now is to keep the project on the cheaper side of that line.
Keeping a working site running
For most estates teams, disruption matters as much as the price. Coating is carried out from roof level, so the building is never opened up. There is no strip-off, the unit stays weathertight throughout, and there are no skips of old sheeting crossing a busy yard. Work can be phased bay by bay or elevation by elevation, fitted around deliveries and shift patterns rather than the other way round. On a multi-let Newark estate, tenants generally keep trading with little more than a notice letter and some parking management beneath the access points. That ability to keep a unit earning while the roof is dealt with is often the deciding factor over a full re-roof.
What the survey covers
We do not price a roof from photographs taken at distance. A physical inspection sets out exactly what you are dealing with:
- Cut edges, side laps and end laps, for the spread of corrosion
- Fixings and washers, the most common source of the drips tenants report
- Gutters, outlets and rooflights, which often fail before the sheets do
- Adhesion of the existing finish, so the new system bonds properly
- Any internal signs of moisture or deck damage that point to replacement
When we would tell you not to coat
We would rather lose the job than coat a roof that should be replaced. Widespread perforation, corrosion that has reached purlins and fixings across the roof, or saturated insulation in a built-up system all mean a coating only hides the decay and wastes the budget. The same goes for fibre cement that has gone brittle. Our survey establishes which side of that line your roof sits on, and the recommendation goes in writing either way, including the times when the honest answer is that coating gains you nothing. For an estates team weighing the figures, that straight verdict is worth more than a tidy-looking roof that fails again inside two years.
