Last updated: 12 Oct 2026 | 4 Views |
Uncle Heng is in his seventies and has served for many years on the committee of a small Chinese shrine tucked into a lane near the old market of Pak Nam Pho, not far from where the Ping and Nan rivers meet to form the Chao Phraya. During the 2026 floods the water crept into the main worship hall until it was almost knee-high, and it sat for several days in the storeroom at the back, which lies a step lower than the hall floor. Volunteers had rushed to lift the small deity statues, the incense urns and the ancestral name tablets onto high shelves, but there was simply not enough time or space to save everything in the storeroom.
On the morning the water finally drained away, Uncle Heng turned the key in the heavy wooden door. The air that rolled out was not the familiar sweetness of sandalwood incense. It was a heavy, damp, sour smell mixed with river mud. The carved wooden base of the main altar table carried a sharp tide line. The lower part of the red walls was speckled with black and green spots that spread outward in rings. In the storeroom, folded red silk banners had grown a grey-white fuzz, and the lion heads and the long dragon costume used in the annual procession gave off such a strong musty smell that he closed the door again almost immediately.
Next door, in the vegetarian hall kitchen, Auntie Lin, a volunteer who has cooked there for more than twenty years, walked slowly past the stoves and pot racks. A thin film of mud covered the floor. A foul smell rose from the drains under the counters. Sacks of donated rice that had been stacked on low pallets were soaked and starting to sour. "The vegetarian festival is coming soon," she said. "So many people come to help and to eat. How can we cook for everyone if the kitchen is like this?"
That afternoon an elderly grandmother who comes to pray every holy day started coughing after only a few minutes in the hall. She said her nose felt blocked and her throat itched. Uncle Heng realized that scrubbing and wiping by hand would not be enough. The shrine and the vegetarian hall needed to be restored properly, without harming sacred objects that the community has cared for across several generations.
This is an illustrative scenario based on the kinds of problems commonly found after floods. It does not describe any specific shrine. Health information in this article is general knowledge; anyone with unusual symptoms should see a doctor.
Many Chinese shrines and vegetarian halls in Mueang Nakhon Sawan sit close to the markets and the riverbank, a pattern that reflects how the Chinese community first settled in Pak Nam Pho as a river trading town. The buildings are often old, with thick masonry walls, tiled or terrazzo floors, carved and lacquered woodwork, gold leaf, painted panels and storerooms that stay closed for most of the year. Each of these features holds moisture for a long time after a flood, and together they create exactly the conditions mold loves: darkness, still air, porous material and plenty of organic matter.
A family home usually has windows that are opened every day and furniture that is moved and cleaned often. A shrine storeroom, by contrast, may only be opened a few times a year, before a festival or a ceremony. Once water has soaked into cardboard boxes, fabric banners, wooden frames and paper offerings, the humidity inside that closed room can stay high for weeks. By the time anyone notices, the mold has already spread from one item to the next.
A large share of the people who visit a shrine every day are elderly, and some live with asthma, allergies or chronic lung disease. Mold spores floating in a closed hall can trigger coughing, sneezing, a blocked nose, itchy eyes and shortness of breath. People with weak immune systems are more vulnerable still. Volunteers who shovel mud and wash floors come into direct contact with water and soil that may be contaminated with bacteria such as E. coli, or with bacteria from rat urine that cause leptospirosis. Any small cut on the hands or feet can become an entry point for infection if it is not protected with gloves and boots and cleaned promptly.
A vegetarian hall kitchen cooks for large numbers of people at the same time, especially during the annual vegetarian festival, which usually falls around September to October. If counters, shelves, cooking pots, cutting boards and drains still carry germs from the floodwater, the risk of diarrhea, food poisoning and vomiting rises immediately. The damage is not only to health. A single outbreak of stomach illness linked to a community kitchen can shake the trust of the people who come to make merit, and that trust takes a long time to rebuild.
Silk banners, festival flags, lion and dragon costumes, lanterns, drums, ceremonial robes, prayer books and gifts donated over decades often have no real replacement. Some were stitched or carved by hand by craftspeople who are no longer working. If mold is left to grow for too long, stains become permanent and fabric fibers weaken and tear. The cost of repair or replacement is usually far higher than committees expect, and some losses are emotional rather than financial: the banner a founding family donated, or the drum that has led the procession for forty years.
A shrine is the spiritual heart of its neighborhood. People want to come back to pray, make offerings and prepare for traditional festivals as soon as possible. Every extra week that the doors stay closed is a reminder that life has not yet returned to normal. Committees are under pressure to reopen quickly, but reopening a damp, moldy hall can expose the most vulnerable visitors to the very health risks the community is trying to leave behind.
Most shrine and vegetarian hall work is done by volunteers who also have their own flooded homes and shops to repair. After a week of shoveling mud, many are exhausted, and some have sore hands, rashes or coughs of their own. Asking the same small group to scrub every carved panel and every folded banner by hand is neither realistic nor safe. Bringing in a professional team for the disinfection and odor work lets volunteers focus on what only the community can do: caring for sacred objects, organizing ceremonies and welcoming people back. It also means the most physically demanding and chemically sensitive tasks are handled by people with the right equipment and protective gear.
What these methods have in common is that they deal only with what the eye can see. They do not reduce germs in the air, in cracks and corners, or inside porous materials that absorbed water. A restoration plan for a shrine needs to treat surfaces and air together, and it needs to do so gently enough to protect objects of faith.
World Health Disinfection (WHD) uses two steps that complement each other. The first is our disinfection fogging service using Chemgene HLD4H, applied through ULV (ultra-low volume) foggers that produce droplets fine enough to reach the carved recesses of an altar table, the space under storage racks and the corners of a closed storeroom. The second is our ozone treatment service. Ozone is a gas, so it spreads throughout a sealed room, helping to reduce mold spores in the air and on surfaces, and breaking down odor molecules rather than masking them.
Fogging is strongest on surfaces that people touch and on floors and walls that sat under water. Ozone is strongest in enclosed air and in places a cloth or a fogger cannot easily reach, such as the inside of folded fabric, the hollow of a lion head or the gap behind a cabinet. Used together, they address both the visible contamination and the invisible smell.
Our team understands that a shrine is not an ordinary building. Before work starts, the committee is welcome to hold any ceremony or offer any words of notice that their tradition requires. Moving deity statues, ancestral tablets and principal incense urns is always done by committee members or people they appoint, never by our staff on their own. We advise which items should be moved out, which should be wrapped completely with cloth or plastic sheeting, and which surfaces must never be sprayed directly, such as gold leaf, antique painted panels and hand-written auspicious calligraphy. We agree the plan with the committee first, and we follow it.
Safety first: High concentrations of ozone irritate the respiratory system. During treatment there must be no people, pets, plants or animals kept on the shrine grounds, such as fish or turtles in basins inside a closed room, in the treated area. All incense, candles and oil lamps must be extinguished before work begins, and the space must be ventilated thoroughly before anyone returns. Electronic equipment, sound systems and items with rubber or leather parts are moved out or covered, and our team keeps the ozone dose no higher than necessary.
For the vegetarian hall kitchen, after fogging we advise rinsing food-contact surfaces such as cutting boards, counters and utensils with clean water in line with the product's directions before cooking resumes. That way the kitchen is not only disinfected but also ready for real use, safely, for everyone who will eat there.
"At first I worried someone would spray chemicals onto the deities. But the team talked to the committee before every step, let us move the important pieces ourselves, and only then fogged and treated the rooms exactly as we had agreed. When we reopened the hall, the grandmother who had been coughing said she could breathe easily again."
— Uncle Heng, shrine committee member, Pak Nam Pho market area
"The kitchen was my biggest worry because we cook for so many people. Once it had been disinfected and the team explained how to rinse surfaces before use, I felt much more at ease."
— Auntie Lin, vegetarian hall kitchen volunteer
Small habits like these protect the investment you have made in restoration. Mold returns wherever moisture returns, so the goal after treatment is to keep sacred spaces dry, bright and breathing.
Q: Do we need to remove the deity statues before disinfection?
A: Not always. Our team assesses this with the committee. Statues that can be moved are moved by committee members according to tradition. Those that cannot be moved are covered completely, and we never spray disinfectant directly onto them.
Q: Will ozone fade red silk banners?
A: High ozone concentrations over long periods can affect some dyes and materials. That is why we control both concentration and duration. Very valuable textiles can be removed or covered, and if you are concerned we can test a small sample first.
Q: Do we have to put out the incense during ozone treatment?
A: Yes. All incense, candles and oil lamps must be extinguished, and no one may stay in the area during treatment. Once ventilation is complete, you can light incense and pray as usual.
Q: When can we cook in the vegetarian hall kitchen again?
A: After ventilating for the time our team specifies and rinsing food-contact surfaces with clean water as advised, the kitchen can return to use.
Q: Will a heavily molded dragon costume look like new again?
A: Ozone helps reduce germs and odors, but it does not repair rotted fabric or remove permanent stains. Badly damaged pieces may still need a specialist craftsperson.
Q: How long does the shrine need to close?
A: It depends on the size of the site and the level of damage. Many shrines choose a period without major ceremonies, or schedule the work for the evening. Our team gives clear ventilation times in advance.
Q: Which areas do you serve?
A: Mueang Nakhon Sawan, Pak Nam Pho and nearby districts, as well as other flood-affected provinces. Contact us on LINE @whd268.
Book a site survey for your shrine, vegetarian hall or sacred storeroom in Pak Nam Pho and Mueang Nakhon Sawan.
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See Disinfection Service – Click Here
Call 065-556-6294 · LINE @whd268 · Email worldhealthdisinfection@gmail.com
Health reference: World Health Organization (WHO): Floods · Department of Disease Control, Thailand
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Keywords: Chinese shrine mold removal after flood, vegetarian hall flood cleanup, sacred storeroom mold, dragon costume mold, controlled ozone treatment for shrines, vegetarian kitchen disinfection, Pak Nam Pho, Mueang Nakhon Sawan 2026