Case study: cleaning the Great Buddha at Qianfoshan Puti Temple, Tainan
In brief: The landmark Great Buddha at Qianfoshan Puti Temple in Tainan sits high above ground, with fine carving on both the figure and its plinth. Cranes and rope access were risky and disruptive to temple life. General Drone Service used cleaning drones with low-pressure spray and a specialist detergent, treating figure and plinth as separate zones and adjusting intensity through live camera monitoring, removing years of accumulated soiling without damaging the carving or the painted surface.
| Project | Detail |
|---|---|
| Site | Qianfoshan Puti Temple, Tainan |
| Location | Tainan City |
| Service | Specialist structure cleaning (landmark statue) |
| Delivered | March 2026 |
Background: how do you clean a landmark statue?
The Great Buddha at Qianfoshan Puti Temple is a significant religious landmark locally, receiving worshippers and visitors year-round. It is precisely its height and its fine carving that make cleaning it so difficult.
Years of accumulated dust, and the staining and soiling left behind as rain runs off, had gradually built up on the figure and the plinth. Removing it ran into several practical problems:
- Working at height is dangerous — both the figure and the plinth are high above ground, and a crane or rope crew faces significant fall risk
- The carving is fine and cannot be damaged — the surface carries detailed carving and painted finishes, and slightly too much cleaning force can cause harm
- Temple life cannot be disrupted — bringing plant on site, setting it up and closing off areas interferes with services and worship
In other words, this was not simply a matter of getting the statue clean. It had to be safe, it had to leave the carving unharmed, and it had to not disturb the congregation — all three at once.
Approach: low-pressure drone spray with live monitoring
General Drone Service replaced traditional high-access work with cleaning drones, with a method built around those constraints:
1. Low-pressure spray to protect the carved detail
Low-pressure spray combined with a specialist cleaning agent dissolves adhered soiling effectively while avoiding the impact damage a high-pressure jet can inflict on fine carving and surface finishes.
2. Figure and plinth treated as separate zones
The figure and the plinth were planned as separate cleaning zones with their own paths, and the method was varied by area and by how heavily soiled each was, so the result came out evenly across the whole structure.
3. Live camera monitoring, with intensity adjusted as the work proceeds
High-resolution drone imagery allowed the cleaning to be monitored live, so the operator could adjust intensity in response to how the surface behaved — cleaning and watching at the same time, keeping the risk to carving and paintwork to a minimum.
4. A shorter closure and a shorter programme
Light equipment and fast set-up allowed flexible scheduling and zoned working, shortening both the closed area and the overall programme so that temple activities and worship were affected as little as possible.
This is exactly where drones earn their place in specialist structure and high-access cleaning: getting close to surfaces that people cannot safely reach and that cannot afford to be damaged.
Results
The project met all three of its core objectives:
- ✅ No high-risk manual work at height — the operator stayed on the ground, removing the fall exposure entirely
- ✅ A shorter programme and a shorter closure — light equipment and zoned working kept disruption to the temple low
- ✅ Carved detail on figure and plinth preserved in full — low-pressure spray and live monitoring cleaned the surface while protecting what was on it
Client feedback
"The statue was cleaned without affecting our worshippers. The process was safe, the result was clearly visible, and they were extremely careful with the detail."
— Abbot, Qianfoshan Puti Temple
What this case shows
Cleaning the Qianfoshan Great Buddha is a representative example of drone technology applied to specialist structures and cultural asset maintenance. It shows that where a surface must be cleaned thoroughly and absolutely must not be harmed, low-pressure spray and live camera monitoring can strike the balance between safety and delicacy.
Whether the subject is statuary, a commemorative building, or a geometrically complex tower elevation, this zoned, low-pressure, live-monitored method offers something manual work has always struggled to deliver on both fronts at once.
Frequently asked questions
Q1: Can a Buddha statue or a religious building be cleaned with drones without damaging the carving?
A: Yes. On surfaces with fine carving and painted finishes, we use low-pressure spray with a specialist cleaning agent and monitor the surface live on high-resolution camera, treating the work zone by zone and varying the intensity accordingly, so that neither the carved detail nor the surface material is damaged. The Great Buddha at Qianfoshan Puti Temple was cleaned with the carved detail preserved in full.
Q2: Why are cranes and rope access a poor fit for a landmark statue?
A: Both the figure and the plinth sit high above ground, so a crane or rope crew is exposed to fall risk — and moving plant onto the site and setting it up disrupts services and worship. Flying from ground level removes the exposure to work at height entirely and substantially shortens both the area closure and the overall programme. More detail: specialist structure and high-access cleaning.
Q3: Will work of this kind interfere with what the temple is doing?
A: Very little. The equipment is light and quick to set up, so the work can be split into zones and slotted flexibly around services and busy periods, allowing the cleaning to be completed without disrupting worshippers.
Closing
The Great Buddha project at Qianfoshan Puti Temple shows the double value of drone high-access cleaning: safety and the protection of detail. Where the subject is an irreplaceable landmark, care matters as much as capability — and that is the standard General Drone Service holds itself to on every specialist structure we work on.
Do you have statuary, a commemorative building, or a geometrically complex elevation that needs cleaning? See our work-at-height cleaning services.
Get in touch
📞 Phone: +886-2-7733-7678 📧 Email: contact@drone168.com 🏢 Coverage: Taiwan-wide service · Taipei office only
General Drone Service — professional drone cleaning in Taiwan, with over ten years of combined industry experience and more than 50,000㎡ of completed work
