Renovating your home is an exciting step towards creating a more beautiful, comfortable, and functional space. But once the work is complete, many homeowners in Singapore are surprised to discover a lingering issue—indoor air pollution, particularly from formaldehyde.
Formaldehyde is a volatile organic compound (VOC) often found in renovation materials such as engineered wood, furniture finishes, adhesives, and paints. It can cause eye, nose, and throat irritation, headaches, and even long-term health risks when exposure levels are high or prolonged.
In Singapore’s humid climate and tightly enclosed flats or condos, formaldehyde levels can build up quickly after a renovation. Fortunately, there are several effective ways to reduce and remove formaldehyde to ensure a safer living environment for you and your family.
1. What is Formaldehyde and Where Does it Come From?
Formaldehyde is a colourless, strong-smelling gas that’s commonly used in building and construction materials. In newly renovated homes, it can be emitted by:
- Plywood, MDF (medium-density fibreboard), and particle board
- Laminate flooring and furniture
- Paints, varnishes, and sealants
- Upholstery, carpets, and curtains
- Adhesives used in cabinetry and woodwork
This process of gas release is called “off-gassing”, and it can continue for months or even years after renovation.
2. Why It’s a Problem in Singapore Homes
Formaldehyde is classified as a human carcinogen by the World Health Organisation (WHO). Even short-term exposure can cause:
- Irritation of the eyes, nose, and throat
- Allergic reactions
- Respiratory issues like coughing or wheezing
In Singapore, where many residential units are compact and air-conditioned for long hours, indoor air can become stale and polluted if not ventilated properly. This makes post-renovation air purification essential, especially in households with children, elderly residents, or individuals with asthma.
3. How to Remove Formaldehyde After Renovation
Here are effective and practical steps to eliminate or minimise formaldehyde in your home post-renovation:
a) Ventilate, Ventilate, Ventilate
The simplest and most effective way to flush out formaldehyde is by increasing airflow.
- Open all windows and doors daily for at least 30–60 minutes
- Use ceiling fans or standing fans to circulate air
- Consider installing ventilation systems like exhaust fans, especially in enclosed areas like kitchens and bathrooms
Pro Tip: Do this for several weeks post-renovation, especially during the first month when off-gassing is highest.
b) Use Air Purifiers with Activated Carbon Filters
HEPA filters are great for dust and allergens, but for gases like formaldehyde, you need air purifiers with activated carbon or charcoal filters.
- Look for models that specifically list VOC or formaldehyde removal
- Brands like Dyson, Xiaomi, and Blueair have models available in Singapore that target gas pollutants
c) Baking Soda and Charcoal: Natural Absorbers
Both baking soda and activated charcoal are natural deodorisers that can absorb formaldehyde particles from the air.
- Place bowls of baking soda in various rooms and replace weekly
- Use activated charcoal bags (often marketed as air purifiers or odour eliminators) in cabinets, wardrobes, and corners
d) Houseplants That Absorb Toxins
Certain houseplants act as natural air purifiers by absorbing VOCs through their leaves and roots.
Some great options for Singapore homes include:
- Spider Plant (Chlorophytum comosum)
- Areca Palm
- Peace Lily
- Snake Plant (Sansevieria)
Tip: Place a few of these plants in your living room, bedrooms, and near newly installed furniture.
e) Use Low-VOC or Zero-VOC Products
While this is more of a preventive step, it’s worth noting:
- Choose low-VOC paints, adhesives, and sealants during renovation
- Opt for solid wood furniture over MDF or particle board where possible
- Ask your renovation contractor about eco-friendly and formaldehyde-free materials
At our interior design firm, we work closely with suppliers in Singapore who offer certified low-emission building materials for healthier indoor environments.
f) Keep Humidity in Check
Singapore’s humidity can increase the release of formaldehyde. Keeping indoor humidity around 40% to 60% can help slow down off-gassing.
- Use a dehumidifier, especially during rainy seasons
- Avoid drying wet clothes indoors for extended periods
g) Professional Air Testing Services
If you’re concerned about indoor air quality, consider engaging an IAQ (Indoor Air Quality) testing service in Singapore.
- These professionals can measure formaldehyde and VOC levels
- They can recommend further remediation steps if necessary
- This is especially useful before moving in, or if family members experience allergies or breathing difficulties
4. How Long Does It Take for Formaldehyde to Clear?
The duration varies depending on the materials used, ventilation, and climate. With proper ventilation and air purification, formaldehyde levels can significantly drop within a few weeks to a few months.
However, in poorly ventilated homes or where high-emission materials are used, it may take up to a year or more for formaldehyde to fully off-gas.
5. Final Thoughts
Renovation is an investment in your dream home—but it’s just as important to invest in your post-renovation safety. Removing formaldehyde and improving indoor air quality is essential for long-term health and comfort, especially in Singapore’s climate and housing environment.
As experienced interior designers and renovation specialists in Singapore, we believe in combining aesthetics with wellness. That’s why we prioritise using low-emission materials and guiding our clients on post-renovation care for a truly livable home.
Looking to renovate your home? Contact us for a free consultation—and let’s build a space that’s not only beautiful, but safe and sustainable too.