CASE STUDY: NEW BUILDING TVOC REDUCTION BEFORE A CUSTOMER AUDIT

New Factory Office: European Customer Wants TVOC Results 9 Days Before Its Audit, Due to a Paint and Glue Chemical Smell

When "new building smell" turns into a line item on an audit checklist, you need more than air freshener. Here is how to approach new building TVOC reduction against the clock, with an ozone paint odor and chemical residue removal service that is measured on site.

The 9-Day Countdown: A Beautiful New Office That Nobody Could Breathe In

This story is a composite based on situations we commonly see; names and places are fictional.

Many manufacturers only realize that new building TVOC reduction is a serious business issue on the day a customer asks to see numbers instead of asking whether the smell is gone. Pimchanok, the EHS and quality systems manager at Thai Metal Precision, a metal stamping plant in an industrial estate in eastern Thailand, learned that lesson the hard way.

The three-storey building everyone had waited for

After more than 15 years in a cramped old office, the company built a new three-storey office of about 2,400 square meters right next to the production lines. The ground floor housed the QC lab with a glossy grey epoxy floor. The second floor was an open-plan office laid with carpet tiles. The top floor held meeting rooms and a 60-seat training room with fabric-wrapped acoustic wall panels, built-in MDF cabinets and brand-new laminate desks.

The contractor handed over almost a month late. The acrylic wall paint, the PU finish on the wooden handrails and the sealant around the glass facade were all finished just days before move-in. The furniture arrived on a Thursday, and 180 employees moved in the following Monday.

Week one: "It will fade on its own"

On the first morning, the moment the glass doors slid open, a sharp mix of paint shop and fresh glue hit everyone in the face. The facade could not be opened, and the central air conditioning ran from 7 a.m. to 6 p.m. Every morning was the worst, because the vapors had built up all night inside a sealed box.

Within the first week, the plant's first-aid room logged 23 employees asking for headache tablets. Others complained of stinging eyes and dry throats. An accountant who was five months pregnant asked to work from the old canteen. A sales engineer with asthma started carrying his inhaler everywhere, and the training room on the top floor became the room nobody wanted to enter.

Wednesday, 3 p.m.: the email that turned a nuisance into a crisis

While the team was still debating whether to buy more air purifiers, an email arrived from a major customer in Germany. It confirmed the annual supplier audit in nine days and attached a pre-audit checklist. One item was unmistakable: evidence of an indoor air quality assessment for the newly constructed building, including TVOC, plus the log of employee health complaints.

This customer accounted for roughly 40% of sales and was reviewing a quote for next year's new model, worth tens of millions of baht. Pimchanok read the email three times, then walked up to the top-floor meeting room where the auditor would hold the opening meeting. One breath, and her heart sank.

Eight days left: every fix hit a wall

The next day she borrowed a handheld meter from a sister company. The readings were high enough to alarm the EHS team, but nobody knew when the device had last been calibrated. No European auditor would accept numbers without documentation behind them.

Purchasing ordered 12 more air purifiers. The housekeepers put charcoal bags on every desk. Someone sprayed lavender air freshener in the meeting room, and the paint-plus-lavender combination left even more people dizzy. The welfare committee raised the issue at its meeting, and an anonymous note in the suggestion box read: "The company cares more about a pretty building than about people."

That night Pimchanok stayed up researching. She needed two things at once: a way to break down chemical vapors quickly across a large building, and before-and-after measurements with a clear, documented source. An auditor does not want to hear "it's better now." An auditor wants evidence.

Why New Building TVOC Reduction Is a Company-Wide Issue, Not Just a Facilities Task

Chemical odors in a new building are often dismissed as temporary. But when hundreds of people work there all day and an overseas customer is watching, the impact spreads in several directions at once.

1. Employee health and sense of safety

• Common symptoms linked to indoor chemical vapors include headaches, dizziness, eye, nose and throat irritation, and nausea.
• People with asthma or allergies may experience flare-ups, while pregnant women, older adults and people with existing health conditions deserve extra caution.
• Long-term exposure is a recognized concern among health and environmental agencies, so "just put up with it" is not an acceptable plan.
• Focus suffers too. Someone with a headache at 8 a.m. cannot give full attention to production planning or document reviews.

2. Money leaking out quietly

• Air purifiers, replacement filters, sprays and charcoal bought as stopgaps, none of which tackle the source.
• Lost working hours from sick leave, frequent breaks and people relocating to any corner of the plant that smells better.
• Higher electricity bills from running air conditioning and fans overnight in the hope of clearing the air.
• The biggest risk of all: a lower supplier score and a new-model contract that may slip away.

3. Reputation and audit results

• Many European customers assess suppliers on quality, environment and occupational health together. A weak spot in one area can drag down the overall rating.
• Findings in an audit report usually come with corrective action plans and follow-ups that keep your team busy for months.
• An auditor who walks into a meeting room that smells of fresh paint naturally starts asking questions about your other management systems.

4. Trust between employees and management

• A new building should feel like a gift to staff. If the smell lingers, the message people hear becomes "management isn't listening."
• Complaints that go through the welfare committee or employee chat groups can grow into a labor relations issue.
• Job candidates and visiting customers remember a building's first smell long after they forget its design.

What Is "New Building Smell" Really, and What Does a TVOC Reading Tell You?

What people call new building smell is actually a cocktail of dozens of volatile organic compounds (VOCs) slowly evaporating from construction and fit-out materials. The process is known as off-gassing: vapors escaping from inside a material over days, weeks or even months.

TVOC (Total Volatile Organic Compounds) is the combined level of those vapors in the air. It does not tell you which specific chemical is present, but it is an excellent overall indicator for tracking trends. A high reading means vapors are accumulating in the room. A reading that falls after corrective work is tangible proof that you are heading in the right direction.

Where the vapors in Thai Metal Precision's building came from

Why factory office buildings hold on to the smell

Modern buildings are designed to be tightly sealed for energy efficiency. Glass facades don't open, and central air conditioning mostly recirculates indoor air with only a limited fresh-air intake. When the system switches off at night, heat builds up and speeds off-gassing while nothing is being exhausted. Walking in the next morning is like opening a box that has been slow-baking the smell all night.

Rushed schedules make it worse. When painting, carpet laying and furniture delivery overlap within a few days, soft furnishings absorb vapors before anyone has even sat down. That is why new building TVOC reduction has to deal with both the air in the room and the chemicals clinging to surfaces, not just cover them with fragrance.

Why the Usual Fixes Can't Beat an Audit Deadline

1. Open the windows, run fans and wait. It does work eventually, but it takes days to weeks, and most glass-facade buildings have no windows that open. Nine days is not enough.
2. Run the air conditioning 24/7. This dilutes the air a little, but with a small fresh-air intake you are mostly recirculating the same vapors, and the electricity bill climbs.
3. Air fresheners, perfume and reed diffusers. They mask the odor rather than remove it, and some products add even more VOCs to the air.
4. Bamboo charcoal and baking soda. Their absorption capacity is tiny compared with thousands of square meters, and they saturate quickly.
5. Home-style air purifiers. They are sized for small rooms, their carbon filters saturate fast under a heavy vapor load, and they do nothing about chemicals soaked into fabric, carpet, gypsum and wood.
6. A big deep clean. Great for construction dust, but VOCs come from inside the materials, so wiping surfaces barely moves the TVOC reading.

What Pimchanok needed was not another pleasant scent. She needed something that could break vapors down quickly, reach every corner of a large building, and be backed by measurements.

The Solution: New Building TVOC Reduction with WHD's Ozone Paint Odor Removal Service

The ozone paint odor and chemical residue removal service from World Health Disinfection (WHD) uses the Master Ozone Generator to tackle acrylic and oil paint odors, epoxy and PU, thinner, lacquer, structural steel paint and industrial adhesives, as well as the smell of new or renovated buildings, new furniture and musty closed spaces.

How ozone works

The generator releases ozone (O₃), mimicking the way nature purifies air. Ozone is a powerful oxidizer, so it reacts with and breaks the molecular bonds of odor molecules, chemical vapors (VOCs) and germs in the air and on surfaces. It destroys the odor at the source instead of masking it.

Because ozone is a gas, it reaches hard-to-access corners: behind built-in cabinets, under desks, above ceilings and into the fabric of acoustic panels. Once the cycle ends, ozone naturally decomposes back into oxygen (O₂), so there is no chemical residue to wipe off afterward.

Before-and-after TVOC measurements with calibrated equipment

Here is the part that matters most for an audit. WHD shows TVOC readings taken before and after treatment at real job sites, using an AM1310 meter backed by calibration documents (a KIMO PT100 SC0110 adjusting certificate and a BR-SMART certificate of calibration). That makes WHD one of the few providers in Thailand that shows customers TVOC reduction results measured on site.

One honest caveat: on-site readings are strong supporting evidence of corrective action. If your customer specifically requires testing by an accredited laboratory to a particular standard, book that separately. Treating the building first means you walk into that test with much better air.

Fast, wide coverage, and safe when done properly

Treatment is carried out by trained technicians in a closed, unoccupied space. People, pets and plants must stay out during the cycle. Afterward, the ozone is allowed to decompose and the area is ventilated before anyone goes back in. Areas are typically ready to use within about 2 hours, so you can treat a building zone by zone outside working hours without shutting the office for days.

Talk to Us About TVOC Reduction

10 Reasons Factories Choose WHD Ozone Treatment Before an Audit

1. It breaks down vapors at the source

Ozone reacts directly with odor-causing molecules instead of covering them up. Once the source is broken down, the smell doesn't come rushing back the moment a spray wears off.

2. Before-and-after TVOC data for your audit file

WHD's chemical residue removal with ozone comes with on-site readings from a calibrated meter. Your EHS team gets real data to support its corrective action report straight away.

3. No chemical residue

Ozone turns back into oxygen on its own. There is no film to wipe off desks, documents or office equipment when the job is done.

4. Built for multi-storey buildings and large areas

The Master Ozone Generator covers large spaces, so the team plans zones by room volume. That works for everything from a small meeting room to an entire open-plan floor.

5. It reaches places hands and purifiers can't

The gas spreads behind cabinets, above ceilings and into acoustic fabric, which is exactly where odors like to hide. A desktop purifier simply cannot reach those spots.

6. Quick turnaround

Areas are typically ready to use within about 2 hours after the process. That suits factories that can't afford to close a building for long before an audit.

7. Many odor sources handled in one job

A new building mixes paint, glue, epoxy and new furniture. An ozone paint odor removal service addresses the whole picture at once, rather than one material at a time.

8. Helps reduce germs and mold in enclosed spaces too

Ozone also tackles mustiness and germs in meeting and training rooms that run on recirculated air. It is a welcome bonus for the working environment.

9. A step-by-step process by trained technicians

Every step, from survey to re-measurement, has a clear purpose. Your safety team can explain to the auditor what was done, how it was done and what changed.

10. Experience across very different sites

WHD's portfolio ranges from condo bedrooms and living rooms to car paint spraying areas, office meeting rooms and chemical industrial plants. Learn more on the ozone chemical odor removal service page.

Before and After Ozone Treatment in the New Office

How the WHD Team Works

1. Site survey and baseline TVOC check. The team assesses each zone's size and volume, identifies odor sources and records starting readings.
2. Clear the area and protect sensitive items. All people, pets and plants leave, and artworks, natural rubber and sensitive electronics are removed or covered as needed.
3. Seal off the zone and set up the Master Ozone Generator. Doors are closed, no-entry signs go up, and the unit is positioned for even distribution.
4. Run a cycle sized to the room volume. Larger rooms or heavier odors get an adjusted cycle.
5. Decomposition and ventilation. Nobody re-enters until the technician gives the all-clear.
6. Re-check TVOC and odor. Results are compared with the baseline, and any remaining hot spots get a recommended next step.
7. Hand the space back. It is typically ready to use within about 2 hours, with readings you can keep on file.

How Thai Metal Precision's Story Ended

On Friday morning, with seven days to go, Pimchanok called WHD. The team surveyed the site, took TVOC readings on every floor, split the building into zones and scheduled ozone treatment for Saturday and Sunday, when nobody would be inside.

After the job, the post-treatment readings in every zone were clearly lower than the baseline. On Monday morning, several employees remarked that the smell was much lighter. Only the training room still had a faint odor near the fabric panels, so the team came back for one more targeted cycle on Tuesday night.

Pimchanok put together an evidence file: before-and-after TVOC readings, equipment calibration documents, site photos, the complaint log with the actions taken, and a longer-term plan to increase fresh-air intake and specify low-VOC materials on future projects.

On audit day, the auditor held the opening meeting in the top-floor room as planned and went through the file carefully. The occupational health section closed with no major findings, just a recommendation to keep monitoring indoor air quality. What made Pimchanok happiest, though, was a short post in the staff chat group: "You can finally breathe in the new building."

Planning Your Next Building So TVOC Never Becomes a Crisis

• Specify low-VOC materials in the tender, including paints, flooring adhesives and composite wood panels.
• Respect the manufacturer's curing times, especially for epoxy and PU floors and wood coatings.
• Sequence the work properly so paint and glue are fully dry before carpet, fabrics and furniture come in.
• Maximize fresh-air intake in the weeks just before and after move-in.
• Schedule ozone treatment and a TVOC check before handover, and make it an item on the contractor's handover checklist.
• Plan backward from your audit calendar so move-in day never lands right before a customer visit.

Frequently Asked Questions

Do we need to leave the area during ozone treatment?

Yes. People, pets and plants must all be out. Treatment is done in a closed, unoccupied space, and you go back in only after the technician confirms the ozone has decomposed and the area has been ventilated.

How long does it take?

It depends on the size of the space and how strong the odor is. Areas are typically ready to use within about 2 hours, and multi-storey buildings are usually treated zone by zone.

Does ozone leave any residue?

No. Ozone naturally breaks down into oxygen, so no chemical residue is left on desks or documents.

What size of space is it suitable for?

Anything from a small meeting room or condo unit to a full office floor, warehouse or factory area. The cycle is calculated from the actual room volume.

Can WHD's TVOC readings support our audit?

They make good supporting evidence of corrective action, because they are taken before and after with a calibrated meter. If your customer requires accredited laboratory testing, arrange that in addition.

Will the smell be 100% gone?

Ozone clearly helps reduce and break down vapors, but some new materials keep off-gassing for a while. A few spots may need a second cycle, combined with good ventilation.

Related Services and Resources

• Ozone Cleaning Service
• Disinfection Spraying Service
• Ozone Disinfection Machines
• US EPA: Volatile Organic Compounds' Impact on Indoor Air Quality
• WHO: Air Quality, Energy and Health

New Building Still Smells, and an Audit Is Coming?

Let the WHD team plan your new building TVOC reduction, with before-and-after readings measured on site.

Call 065-556-6294 · LINE @whd268
Email worldhealthdisinfection@gmail.com
88/268 Kanlapaphruek Rd, Bang Khae, Bangkok 10160, Thailand