Why building cleaning has to go green
In brief: Biodegradable cleaning agents break down through microbial action once released, leaving no persistent residue and building up no toxicity. We use a mildly alkaline formulation at around pH 7.5–8, which suits glass, stone and metal facades alike and corrodes none of them. Adopting green cleaning can be recorded in a corporate sustainability report against ESG and green building requirements.
In a city, a building's facade takes sun, rain, traffic pollution, mould growth and every other kind of environmental attack, every day.
The habit has been to deal with that using strong acids, strong alkalis or solvent-based formulations. They work quickly, but they bring side effects: corroded materials, polluted watercourses, and risk to the health of the people doing the work.
As ESG has moved up the agenda, more property owners have started asking the obvious question:
Is there a way to clean that removes the soiling, is safe for the environment, and extends the building's life?
What follows sets out why biodegradable agents have become the direction of travel in facade maintenance, and why we have committed to them.
1. What biodegradable cleaning agents are, and why they are better
Biodegradable means the agent can be broken down by microorganisms in the natural environment once released, rather than persisting or accumulating toxicity.
What defines them
- ✅ No acid, no strong alkali — nothing that corrodes building materials
- ✅ No organic solvents (non-VOC) — no irritation to skin or airways
- ✅ Low hazard — a safer operation
- ✅ Ecologically sound — no effect on plants, watercourses or ecology
What the traditional approach actually costs
Strong acid or alkali cleaning gets a surface very bright very quickly. The price is usually:
- ❌ Facade materials etched, hazed or discoloured
- ❌ Stone stripped of its protective layer; metal corroding
- ❌ Run-off damaging planting or entering the stormwater system
- ❌ Injury or allergic reaction among the crew
Add it up over years and the maintenance cost is higher, not lower.
2. Mildly alkaline and non-corrosive: why it works across materials
Our cleaning formulations are all mildly alkaline, around pH 7.5–8 — close to the safety range of plain water, but still effective at breaking down oily film and pollutants.
What it suits
- ✔ Curtain wall glazing
- ✔ Marble, granite, sandstone
- ✔ Metal cladding — aluminium panel, stainless steel
- ✔ Tile and mosaic
- ✔ Reinforced concrete and coated facades
Why it matters
No corrosion, no etching, no hazing of glass, no discolouration of metal.
That is particularly important on tall buildings, because:
- Most facade materials are expensive
- Once chemically damaged, they are very hard to restore
- Premium residential and commercial buildings hold high standards on appearance
A green formulation turns facade maintenance into upkeep rather than damage.
3. What biodegradable agents actually remove
There is a common assumption that a gentle formulation cannot clean properly. The opposite is true.
What they lift
- 🎯 Urban atmospheric deposits
- 🎯 Oily film on glass, traffic exhaust residue
- 🎯 Mould, algae, moss
- 🎯 Water marking and mineral deposits — efflorescence, scale
- 🎯 Metal oxide staining
- 🎯 Bird droppings and other biological soiling
Where they fit
Which makes them well suited to:
- Commercial curtain wall glazing
- Premium residential stone facades
- Facades that have gone a long time without cleaning
- Solar panel surfaces — neutral, and harmless to the modules
Cleaning power is not the same as a violent chemical reaction. Cleaning power is the right formulation applied the right way.
4. Traditional versus green cleaning
| Strong acid / alkali | Biodegradable | |
|---|---|---|
| Damage to materials | High — can corrode stone, metal and glass | Very low — no corrosion, protective layers intact |
| Environmental impact | Can harm planting and watercourses | Breaks down naturally |
| Odour and toxicity | Can irritate airways and skin | Low odour, low hazard |
| Operational safety | Higher exposure risk to the crew | Safer and easier to protect against |
| Long-run maintenance cost | High — materials age faster | Lower — less damage, less repair |
In one line
Green cleaning is not about saving on chemicals. It is about protecting the building, the environment and the people.
5. In an ESG era, how a building is cleaned has to keep up
ESG is not a slogan. It has real effects on:
- How a property is operated
- How much residents trust the management
- How investors value the asset
- What goes into a corporate sustainability report
What green cleaning delivers
✅ Lower environmental load
No polluting run-off, no chemical residue.
✅ Longer material life
Lower corrosion and erosion risk, extending the facade's service life.
✅ A safer working environment
Better for the crew, for residents and for passers-by.
✅ ESG and green building alignment
Which matters particularly to large enterprises, commercial offices and operating real estate.
What building operations will be judged on
Not merely whether the building came out clean, but whether the method was:
clean, sustainable, low-risk, and defensible.
6. Our position: efficient and sustainable together
Every cleaning agent we use is:
- ✅ 100% biodegradable
- ✅ Mildly alkaline and non-corrosive
- ✅ Suitable across facade materials
- ✅ Effective against a wide range of soiling
- ✅ Low-odour and low-hazard
- ✅ Aligned with current ESG expectations in property operations
What we believe
Safe, clean and sustainable is the floor for building maintenance, not the ceiling.
Frequently asked questions
Q1: Do environmentally sound agents clean well enough, and do they cost more?
A: Modern formulations have been refined to the point where their cleaning power matches traditional strong acids and alkalis, while protecting the building materials and extending their life — which makes them cheaper over the long run. The unit cost may be slightly higher, but because they cause no damage and reduce the frequency of repair, the total maintenance cost is lower. More on drone facade cleaning.
Q2: Which facade materials do biodegradable agents suit?
A: A mildly alkaline formulation at around pH 7.5–8 suits curtain wall glazing, marble, granite, sandstone, metal cladding in aluminium and stainless steel, tile, mosaic, reinforced concrete and coated facades — very nearly everything. It does not corrode, does not etch the material, does not haze glass and does not discolour metal, which turns maintenance into upkeep rather than damage.
Q3: Does green cleaning help a company meet its ESG targets?
A: Yes. Adopting green cleaning can be recorded in a corporate sustainability report as a demonstration of environmental and social commitment. Environmentally sound agents reduce environmental load, extend the life of the building materials and create a safer working environment, meeting corporate ESG and green building requirements — which matters particularly to large enterprises, commercial offices and operating real estate.
📌 Closing: cleaning is evolving, and green is where it is going
Facade cleaning is no longer simply a matter of getting a surface clean. It is professional work bearing directly on a building's service life, on environmental protection and on public safety.
Moving to green, non-corrosive, biodegradable cleaning is an upgrade every urban building now has to face.
Worth reviewing
If you manage property, own a building, or hold responsibility for ESG in your organisation, the question is straightforward:
Has the way your buildings are cleaned kept up?
Biodegradable agents, mildly alkaline formulations and ESG alignment — those three together are what make green cleaning the mainstream choice in modern building maintenance.
🚀 Arrange a green cleaning assessment
Want to understand how to bring green, safe and efficient cleaning to your building?
What we provide
- A building assessment — establishing which approach fits
- A green cleaning programme — using biodegradable agents
- A full outcome report — before-and-after comparison with recommendations
- Documentation for ESG reporting — supporting your sustainability report
📞 Phone: +886-2-7733-7678 📧 Email: contact@drone168.com 🏢 Coverage: Taiwan-wide service · Taipei office only
Get in touch to arrange an assessment.
General Drone Service Co., Ltd. — professional drone cleaning in Taiwan, committed to sustainable practice
Last updated: 4 December 2025
