When you walk into a newly built home or unwrap new furniture and smell that “new” scent, you’re often breathing in chemicals released into the air — a process called off-gassing. While it’s invisible, off-gassing can have long-lasting effects on your home’s indoor air quality and your health.
Understanding what it is, where it comes from, and how to minimise it can help you create a safer, healthier living environment.
What Is Off-Gassing?
Off-gassing is the slow release of volatile organic compounds (VOCs) and other chemicals from everyday products and building materials. These emissions occur as chemical compounds break down, and they can last for weeks, months, or even years depending on the material.
Off-gassing doesn’t just come from obvious sources like paint — it hides in the building blocks of your home:
- Furniture & Upholstery: Pressed wood furniture, foam cushions, and fabrics treated with flame retardants.
- Flooring: Carpets, vinyl, and laminate flooring bonded with adhesives.
- Paints, Sealants & Adhesives: High-VOC paints and varnishes.
- Engineered Wood Products: MDF and particleboard often contain urea formaldehyde, a chemical linked to respiratory irritation and long-term health risks.
- Plastics & Electronics: New plastics and electronics emit chemical byproducts, especially when heated.
Why Off-Gassing Matters
The effects of poor indoor air quality aren’t always immediate — but they build up over time.
Short-term symptoms may include:
- Headaches, dizziness, and fatigue
- Eye, nose, and throat irritation
- Allergic reactions
Long-term risks may include:
- Respiratory issues and asthma flare-ups
- Neurological effects from prolonged exposure
- Increased cancer risk (formaldehyde is a known carcinogen)
Children, the elderly, and those with pre-existing conditions are particularly vulnerable.
How Builders Help Minimise Off-Gassing
Homeowners often think managing air quality is something to worry about after construction. In reality, builders can significantly reduce off-gassing during the planning and building process.
Here’s how:
- Guiding Smarter Material Choices
A good builder helps you select low-VOC paints, adhesives, and finishes, solid wood or phenol-formaldehyde plywood (instead of MDF/particleboard), and natural flooring options. These choices drastically cut down the chemical load entering your home in the first place.
- Managing Installation Practices
How products are installed matters. Builders can:
- Use moisture barriers to reduce dampness (which worsens VOCs and mould).
- Allow adhesives and finishes to cure fully before sealing the home.
- Store materials in ventilated spaces before installation to let them off-gas early.
- Improving Ventilation Design
Builders can design airflow into your home:
- Cross-ventilation through windows and openings.
- Mechanical systems (HRV/ERV) that keep fresh air circulating year-round.
- Properly placed exhaust fans in kitchens and bathrooms.
- Educating Homeowners
Builders can walk you through how your finishes affect indoor air quality and provide tips on maintenance — like choosing natural cleaning products to avoid reintroducing VOCs.
- Testing and Verification
Forward-thinking builders may use thermal imaging, moisture checks, and even IAQ monitors to confirm your home’s air is safe and healthy before handover.
Off-gassing may be invisible, but its effects on your health and comfort are very real. The good news? With the right builder and smarter choices, you can drastically reduce exposure and create a home that supports your wellbeing for years to come.
At Locspec, we see health and performance as non-negotiables. From the materials we specify to the systems we design, we take every step to minimise off-gassing and give you peace of mind that your home is safe, durable, and built for the future.
👉 Planning a new build or renovation? Let’s talk about how our pre-construction process helps you make healthier choices from day one.