Last updated: 2 Sep 2026 | 16 Views |
Seven consecutive nights of services, two hundred mourners each, in a single hall with no gap between them. That is what a mid-sized urban temple faces every week - and it is precisely the condition pathogens favour.
Somboon manages the crematorium and funeral halls at a mid-sized urban temple: three halls, a body preparation room, the crematorium itself, and eleven permanent staff.
In the busiest month of the year all three halls are booked every night. Some run seven consecutive nights with no free day at all, and each night brings an average of 180 to 220 mourners.
The middle hall is the most requested, he says, because it is the largest and it is air conditioned: about 320 square metres, fully enclosed, filled with rows of plastic chairs, with doors opening and closing constantly as guests come and go.
That particular week ran seven nights straight.
The first two nights passed normally. On the third, a group who had travelled from another province attended, several of them coughing throughout the service - an entirely ordinary sight nobody thought twice about.
Temple staff have to be present throughout: arranging chairs, receiving guests, serving water, managing the sound system, and clearing up after the service ends, usually between ten and eleven at night.
On the eighth day the first staff member called in sick. On the ninth, two more. On the tenth, another. Four of eleven - and one of them a 61-year-old senior staff member who spent three nights in hospital with pneumonia.
Somboon says the temple still had five more nights booked and he was down to seven people. He had to double up duties and ask for help from community volunteers.
What troubled him most was not the staffing. It was the question he asked himself: if four of our staff are ill, what about the mourners?
Guests at a funeral service are not a typical crowd, he points out. They are largely older relatives, elderly people paying respects to a contemporary, and family members who have just spent months caring for someone through a terminal illness and are physically exhausted.
He walked the hall one morning after a service and found that what the team did as routine was: sweep, mop, wipe the altar table, stack the chairs, and open the doors to air the room.
The 220 plastic chairs guests sat in every night were wiped only where a mark was visible. The chair covers were laundered monthly. The aisle carpet was vacuumed weekly. The air conditioning was serviced once a year. And the toilets used by 200 people in a single evening were cleaned twice a day.
The body preparation room - technically the highest-risk area on the site - received only a floor wash with detergent after use.
Somboon put it to the temple committee this way: we have always managed the ceremony beautifully, but we have never managed the hygiene of the space systematically - while receiving two hundred people a night, seven nights running.
Funeral halls and crematoria carry several risk conditions simultaneously, and it is a subject almost nobody discusses.
Services usually run three to seven consecutive nights, with a large number of people in an enclosed, air-conditioned space together for two to three hours at a time.
Unlike a reception where people circulate, mourners sit still for long periods, facing the same direction, very close together.
With no free day between services, the space never rests and never receives a deep clean all week.
Funeral services draw a markedly higher proportion of older people than other gatherings, because they are the contemporaries and senior relatives of the deceased.
Another group is family members who have just spent months caring for a terminally ill relative, typically sleep-deprived, under sustained stress, and with reduced immunity.
The World Health Organization and Thailand's Department of Disease Control both note that older people and those in a weakened state face substantially higher risk of respiratory illness progressing to pneumonia.
The body preparation room carries the highest risk of contact with body fluids anywhere on the site, yet in many temples it has the lightest procedures.
Staff who work in that room are frequently the same people who go out to receive guests in the hall afterwards - a direct path from the highest-risk area to the most densely occupied one.
The floor, walls, working table, sink and room air all need more than a routine detergent floor wash.
Families arrive at the most emotionally vulnerable moment of their lives. The sense that a place is clean and cared for means more to them than most people realise.
Conversely, a musty hall, chairs that feel tacky, or unclean toilets are exactly what a family will remember and repeat to others.
For a temple with several halls, its reputation for care of the premises is one of the factors families weigh - and it affects the income the temple applies to its other community work.
Somboon tried what could be done immediately first, and found each approach had a clear ceiling.
What Somboon needed was a method covering the entire hall in a short window after the service, achievable by the existing staff, without taking the hall out of use for a single day.
ULV - Ultra Low Volume - fogging answers that precisely. It releases an enormous number of micron-scale disinfectant droplets to travel throughout the hall, into the gaps between chairs, under seats, across seat backs, chair covers, aisle carpet and air conditioning vents, settling on surfaces from every direction.
The Airofog U260 is a German-built ULV fogger producing 15-30 micron droplets - well suited to a funeral hall, because they are fine enough to disperse across 320 square metres in minutes and dry fast enough not to leave chair covers and carpet damp enough to go musty.
Speed matters. A 320 square metre hall takes roughly 20 to 25 minutes, which can be done straight after the team finishes stacking chairs at eleven at night, leaving the hall ready for the following night with no closure at all.
This is the same model Thai Airways and Bangkok Airways use for aircraft cabin disinfection and the State Railway of Thailand uses on trains and in stations - environments closely comparable to a hall: enclosed, densely occupied, full of fabric, with a tight cleaning window.
Wiping chairs individually is beyond a small team finishing at eleven at night. Micron droplets from the U260 cover every chair - seat backs, undersides and the gaps between - in one pass.
Covers and carpet hold both pathogens and odour, but cannot be laundered often for want of spare sets. Droplets of 15-30 microns lay down a thin, fast-drying film, so they can be treated without dampness or the mustiness that follows.
This is the biggest constraint for a temple booked every night. A 320 square metre hall takes 20 to 25 minutes straight after the chairs are stacked, and the hall is ready the next morning - so bookings are never affected.
The preparation room needs more than a floor wash. A ULV pass covers the floor, walls, working table, sink, shelving and the room air - a standard actually proportionate to the risk level of that space.
Hall mustiness comes from moisture accumulating in covers, carpet and upholstery that never fully dries during consecutive nights. Regular fogging removes the cause, and families notice the difference the moment they step inside.
Vents and air conditioning grilles are accumulation points that are genuinely hard to clean and get done annually. The 50 cm gooseneck hose lets staff fog directly into them weekly, without dismantling anything.
Temples have limited staff working late. A light machine means one person can treat all three halls, the toilets and the preparation room in one round without stopping.
The hall, with fabric and carpet, needs a lighter, fast-drying application. The preparation room, with hard surfaces and higher risk, tolerates a heavier one and a stronger chemistry. One machine handles both.
When the local health authority inspects or the committee asks about measures, the Airofog U260 carries certification from Thailand's Department of Medical Sciences, Department of Health and the Faculty of Medicine at Mahidol University, plus WHO, TUV Rheinland and IPARC.
Mourners attend one night and go home. Temple staff are in that hall every night of the year. Theirs is the highest cumulative exposure, and it is the strongest reason of all to invest.
Somboon says the last row is what families comment on most - something he never set out to fix, but which people register the moment they walk in.
Temples that make this work build the pass into the nightly close-down, so it becomes part of clearing the hall rather than an optional extra.
Step 1: Attach the pass to the post-service close-down
Run it immediately after the team has stacked chairs and mopped, and make it a signed line on the nightly close-down checklist so it is not skipped on a tiring night.
Step 2: Spread the chairs before fogging, do not stack them first
If chairs are stacked into tall columns before the pass, droplets reach only the outermost ones. Space or spread them for one pass, then stack afterwards.
Step 3: Use a separate pass and chemistry for the preparation room
The preparation room should be treated after every use, with a chemistry appropriate to a high-risk area - distinct from the gentler product used in the hall where fabric is a concern.
Step 4: Fog into the air conditioning vents weekly
Use the gooseneck hose into return-air vents and grilles once a week, because these are only genuinely cleaned once a year.
Step 5: Always work from the hall toward the preparation room
Start with the cleanest hall, then the toilets, and finish in the preparation room, so staff never carry anything from the highest-risk area back into a treated space.
Step 6: Log it, and tell families discreetly
Record date, hall, chemical and operator in the daily book, and consider a small notice at the hall entrance stating that the space is cleaned and disinfected every night - information families are reassured to see.
Step 7: Review quarterly with the temple committee
Bring staff sick days and family feedback to the committee each quarter, so the value of the investment is visible and the practice continues.
For a funeral hall the decisive specifications are the 15-30 micron droplet size, which dries too fast to dampen covers and carpet, and the 3.4 kg weight, which lets one staff member complete every hall in a single night.
“We have always managed the ceremony beautifully. But when four staff went down together I had to accept that we had no system for hygiene at all, while receiving two hundred people a night for seven nights running.”
“My worry at the start was a strong chemical smell in the hall, which would be entirely inappropriate here. The team helped us choose a product that leaves no odour, and we fog at eleven at night after the service. By morning there is nothing to smell - only a room that feels fresher.”
“Our own staff run it, about twenty-five minutes per hall. We have had no further clusters of illness this year, and several families have remarked that our halls are cleaner than others - without us ever telling them what we do.”
— Crematorium and funeral hall manager, urban temple (name withheld)
People come here on the hardest day of their lives. The least the place can be is as safe as it can be made.
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The World Health Disinfection team is happy to advise you before you decide, at no cost, and can prepare a quotation and the documents your procurement process needs.
Will there be a lingering chemical smell in the hall?
It depends on the product chosen. Select a formulation specified as residue and odour free, and fog at night after the service so there is time to clear before the next one. In practice most users report that pre-existing mustiness reduces rather than any new smell appearing.
How long does a 320 square metre hall take?
About 20 to 25 minutes for one person in practice, including walking every chair row and concentrating on the air conditioning vents - achievable straight after the team clears the hall.
Will the fog damage the sound system or other electronics?
Use the lowest nozzle setting near audio and electronic equipment, or cover it during the pass. At an appropriate setting, 15-30 micron droplets dry quickly and leave no standing water.
How often should the preparation room be treated?
After every use, since it is the highest-risk area on the site, using a chemistry appropriate to that risk level. The team can advise on suitable products and procedure.
Will chair covers and carpet be damaged or discoloured?
At an appropriate nozzle setting, ULV droplets form a thin, fast-drying film rather than soaking fabric. Test a small area first and choose a chemistry rated for upholstery.
Is it worthwhile for a small temple with a single hall?
Yes. A smaller space means a much shorter pass, and the temple's own staff carry the highest cumulative exposure regardless of the temple's size. Protecting them is the main reason the investment pays.
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Related search terms: funeral hall disinfection, mortuary hygiene, ULV fogger, Airofog U260, body preparation room disinfection, temple hygiene standards, enclosed space disinfection, cold fogging machine
See full details and pricing for the Airofog U260 ULV fogger from Germany - click here