Warehouse & Factory Roof Cleaning
Large profiled metal roofs, skylights and box gutters cleaned from the air — no one walking purlin lines, no fall-through risk, no production stopped below.
Drone cleaning of a warehouse or factory roof starts from S$1,200 depending on area and growth level. Large single-span industrial roofs are the most cost-efficient drone cleaning jobs per square metre, because the surface is continuous and the drone covers 1,500-1,800 sqm per working day with nothing to rig.
Key takeaways
- Price: From S$1,200 by roof area and biological growth.
- Best-case economics: large continuous spans are the cheapest surface per sqm we clean.
- Fall-through is the real hazard - fragile skylights and corroded sheets, not the edge.
- Growth causes corrosion by holding moisture against coating and fixings.
- No downtime - work happens above an operating facility, not inside it.
On this page
The fall-through hazard
On an industrial roof the danger is rarely the edge. It is the surface itself. Profiled metal sheeting is only strong along purlin lines, and those lines are not always visible under biological growth or accumulated dust. Polycarbonate skylight panels, often the same profile and colour as the surrounding sheets after a few years of soiling, will not hold a person at all.
A cleaning crew on that roof is walking a surface where a misidentified step is a fall from height. Removing people from the roof removes the entire hazard class — which is also why the permit-to-work paperwork becomes considerably simpler.
Why growth costs you a roof
Algae and lichen are not a cosmetic problem on metal roofing. Growth mats hold moisture against the coating continuously, in a climate that is already humid year-round. The coating degrades, then the substrate corrodes, then fixings fail and the roof leaks.
The economics are stark: a S$3,000 clean on a two-year cycle against a resheeting job that runs into six figures on a large span. Deferring roof cleaning is one of the more expensive false economies in facilities maintenance.
Skylights and daylight loss
Most warehouse roofs carry translucent panels for daylighting. Soiled and algae-covered skylights can lose a large share of their light transmission, and the warehouse compensates by running artificial lighting through the day across a very large floor area.
Cleaning skylights alongside the roof adds little to the job because the crew, permit and water setup are already on site — and the lighting-load reduction is measurable on your next bill.
Box gutters on large spans
Industrial box gutters silt faster than any other drainage on a building, because the catchment feeding each outlet is enormous. On a large roof, one blocked outlet can pond a significant water load and discharge overflow down the elevation.
We survey the full drainage run during the same flight — see gutter cleaning for how that is scoped and priced.
Industrial roof cleaning cost
| Roof | Approx. area | Typical price (SGD) |
|---|---|---|
| Small industrial unit | ~1,500 sqm | S$1,200 |
| Mid-size factory roof | ~3,000 sqm | From S$2,400 |
| Large warehouse span | ~6,000 sqm | From S$3,200 |
| + skylight cleaning | - | Small addition, same visit |
| + box gutter survey | - | Same flight |
| Heavy lichen or moss | - | Adds 20-40% |
Facilities in Jurong Island and other secured industrial estates require JTC clearance in addition to the CAAS permit — see industrial drone cleaning.
Frequently asked questions
How much does warehouse roof cleaning cost in Singapore?
Drone cleaning of a warehouse or factory roof typically starts from S$1,200 depending on roof area and biological growth level. Large single-span industrial roofs are among the most cost-efficient drone cleaning jobs per square metre.
Why not send workers onto a warehouse roof?
Profiled metal roof sheets and fragile skylight panels are a recognised fall-through hazard. Workers must walk on purlin lines they cannot always see, and a misstep onto a skylight or corroded sheet is a fall from height. A drone removes that exposure entirely.
Does roof growth actually damage an industrial roof?
Yes. Algae and lichen hold moisture against the coating, accelerating corrosion of metal sheets and fixings. Untreated growth shortens roof life and converts a cleaning job into a recoating or resheeting job costing many times more.
Can you clean the skylights at the same time?
Yes, and it is usually worth doing. Soiled polycarbonate skylights cut natural light substantially, which raises daytime lighting load across the warehouse floor. Skylight cleaning adds little cost when the crew is already on site.
Get an industrial roof quote
Send the address and approximate roof area. Most industrial roofs can be quoted from satellite imagery plus a short site check.