Formaldehyde Removal Explained: Safety, Methods and When You Need It
Formaldehyde is one of the most common indoor pollutants found in newly renovated homes across Singapore. Although invisible and odourless at low levels, it can linger for months after renovation works — especially in spaces with new carpentry, flooring, paint or furniture.
Many homeowners only realise something is wrong when they experience discomfort after moving in: headaches, throat irritation, a persistent “new house smell”, or a general feeling of stuffiness.
This guide explains what formaldehyde is, where it comes from, how it is removed, and when you should consider professional treatment, so you can move into your renovated space safely and confidently.
What Is Formaldehyde and Why Is It Present in New Homes?
Formaldehyde is a volatile organic compound (VOC) commonly released from renovation materials. It is not unique to Singapore — it appears in modern housing worldwide because it is used in many building materials for durability and cost efficiency.
Common sources include:
New carpentry, especially plywood, MDF and particle board
Fresh paint and varnish
Laminates and vinyl flooring
Construction adhesives and sealants
New furniture such as wardrobes, beds and cabinets
Foam mattresses and textiles
These materials release formaldehyde slowly over time — a process known as off-gassing. Without proper ventilation or treatment, levels can remain elevated for months after a renovation.
How Do You Know If Your Home Has Formaldehyde?
Many homeowners notice issues only after moving in. Although formal testing kits exist, the signs of poor indoor air quality are often obvious:
Persistent “chemical” or “new house” smell
Eye, nose or throat irritation when staying in the room
Feeling unusually tired or uncomfortable indoors
Headaches that improve when you leave the house
Strong smell coming from carpentry or flooring after opening cabinets
If you experience these signs after renovation, a formaldehyde check or professional treatment is recommended.
Why Formaldehyde Lingers in Singapore Homes
Singapore’s hot and humid climate makes formaldehyde off-gas more aggressively. Higher temperatures and moisture accelerate the release of trapped chemicals from carpentry and flooring.
This is why many homeowners still notice strong odours weeks after moving in — even with windows open daily.
Additional factors include:
Rooms with limited ventilation
New built-in carpentry across the home
Floors newly overlaid with vinyl
Heavy renovation with adhesives or varnishes
Because new homes today contain more built-ins than ever, formaldehyde presence is increasingly common.
Common Methods of Formaldehyde Removal
There is no single “one size fits all” method for removing formaldehyde. In most homes, especially newly renovated ones, the most effective approach involves combining several techniques to speed up off-gassing and improve indoor air quality. Below are the four main methods commonly used in Singapore.
1. Ventilation and Air Circulation
Ventilation is the first and most natural method of reducing formaldehyde levels. Keeping windows open for several hours a day allows fresh air to dilute VOCs, and using fans helps push stale air out more quickly. While this method works well in mild cases or during the initial post-renovation phase, it is often insufficient on its own—particularly in homes with significant new carpentry, enclosed layouts, or poor airflow.
2. Activated Carbon Filtration
Activated carbon filters are frequently used to capture VOC molecules from the air. They are commonly found in modern air purifiers and can help reduce lingering smells associated with renovations. For this method to remain effective, the filters must be replaced regularly, and the purifier must operate continuously. It serves as a helpful supplement, especially in bedrooms or smaller enclosed rooms, but it may not fully resolve strong formaldehyde presence.
3. Air Purifiers with HEPA and VOC Filters
Air purifiers that combine HEPA filtration with VOC-absorbing filters offer broader protection. HEPA filters remove fine dust and airborne particles, while the VOC filter captures chemical pollutants such as formaldehyde. Although this improves daily air quality and reduces exposure, it does not eliminate formaldehyde entirely. Instead, it provides ongoing support for households with children, elderly members, or individuals with sinus sensitivities.
4. Professional Chemical Neutralisation
For homes with persistent chemical smells or high levels of new carpentry, professional formaldehyde neutralisation is often the most effective option. Trained technicians apply a safe chemical treatment onto surfaces such as cabinets, walls, flooring, carpentry interiors and built-in furniture. The solution breaks down formaldehyde molecules, accelerating the off-gassing process and significantly improving air quality. This method is ideal for homeowners who need to move in quickly or who experience discomfort when spending time indoors.
When Do You Need Professional Formaldehyde Removal?
DIY ventilation helps, but professional removal becomes important in the following situations:
Strong smell persists for more than 2–4 weeks
You experience discomfort at home
There is extensive new carpentry or built-ins
Newborns, elderly or sensitive individuals are moving-in
You want to move in quickly
How Eminence Cleaning Group Can Help
Eminence Cleaning Group provides formaldehyde removal tailored for Singapore homes.
Our service includes:
On-site assessment
Targeted neutralisation of formaldehyde on all affected surfaces
HEPA extraction
Optional steam cleaning for furnishings
Post-treatment airing and ventilation guidance
Safe, non-corrosive solutions suitable for homes with children and pets
Our goal is to make your space safe, fresh and comfortable for move-in.
