Connect with us


Property Inspector: Preventing mold growth in your home



PHUKET: Phuket seems to be the mold capital of the world. We all battle the mold. It surrounds us 24 hours a day in the form of spores in the air and those that have settled onto every surface inside a home.

These spores are time bombs waiting to go off. In almost all instances, they already have two of three of the necessary ingredients to grow and thrive. The temperature inside most homes is almost always sufficient to support mold growth. The surfaces that the mold spores rest upon are usually a source of food for them. Mold will thrive on drywall paper, wood, some paints, fabrics, dust and so on. Soaps and other body-care products that often create a film inside tubs and showers are a smorgasbord for mold.

Mold can also easily grow inside a cold refrigerator. Certain molds thrive on the natural oils found in some deck sealers. That is why it’s best to use synthetic resin deck sealers that do not support mold growth. You name it, a mold will eat it. Did you know that trees and bushes produce a fine mist of sugar spray at certain times of the year? Outdoor molds thrive on this food. This is one reason your deck, patio or other outdoor furniture gets covered with mold.

Water is the third ingredient that triggers the mold spore time bombs. Surfaces that become wet from plumbing leaks, roof leaks, condensation and pet urine can sprout mold growth in a few days.
If the surfaces stay wet for extended periods of time, the mold can grow at an astounding rate.

Relative humidity levels of 50 per cent or more can supply enough moisture in the air that condensation can occur at temperatures close to the actual surface temperature of the object. Forget about stopping mold spores from getting into your home. It’s virtually impossible. But, be warned: common molds can cause health problems, so you need to deal with it quickly.

The key to stopping or halting mold is to cut off its supply of water. Vent dryers outdoors. Install high-quality fans that remove water vapor from baths and kitchens. Make sure all fans are vented to the outside. Many homes I inspect have no fan or windows that open in the bathroom or shower area. The few that have fans vent them into the attic space. Keep the shower door or curtain open when not taking a shower. Get as much water down the drain as soon as possible. Do whatever is possible to keep bathrooms dry.

In Phuket, it’s important to have good ventilation in the shower and the rest of the bathroom. Fix plumbing and roof leaks immediately. You can stop your mold growth by lowering the relative humidity in your home by running the air conditioner, keeping fans going or making sure your new home has plenty of air flow.

Cleaning mold is fairly simple. A solution of four parts water and one part chlorine bleach can be used to remove mold from tiles, concrete, grout and other surfaces that are not harmed by the harsh chlorine.

Fabrics, painted walls, wood and clothing can be cleaned using non-toxic oxygen bleach.

Mark Dietrich is a professional inspector and property builder with a master’s degree in building engineering. He came to Phuket after working for 25 years in the custom home and inspecting industry in the USA, and has been working in Thailand for more than 11 years. Visit, email him at or call 085-809 8755

— Mark Dietrich


Get more from The Thaiger

Join the conversation and have your say on Thailand news published on The Thaiger.

Thaiger Talk is our new Thaiger Community where you can join the discussion on everything happening in Thailand right now.

Please note that articles are not posted to the forum instantly and can take up to 20 min before being visible. Click for more information and the Thaiger Talk Guidelines.

Archiving articles from the Phuket Gazette circa 1998 - 2017. View the Phuket Gazette online archive and Digital Gazette PDF Prints.

Follow Thaiger by email:

Thailand4 hours ago

Thailand News Today | Thais more relaxed about Covid-19

Bangkok4 hours ago

‘Win’ motorbike taxi drivers protest against GrabBike in Bangkok, Thailand

World4 hours ago

China not cod-ing about its zero Covid policy as it tests fish

Sponsored2 days ago

Super luxury villas in Phuket with breathtaking ocean views

Travel4 hours ago

Affordable but stylish hotels in Koh Samui for your next holiday

Thailand4 hours ago

Female soldier seeks help after being abused by senator’s wife

Crime5 hours ago

2 fake monks make up to 40k baht per day scamming villagers in northern Thailand

Join the conversation on the Thaiger Talk forums today!
Crime6 hours ago

Man stabs wife’s secret lover to death in rice paddy in central Thailand

Thailand6 hours ago

Thailand movie legend Sombat Metanee has died, aged 85

Crime7 hours ago

Teen soldier murders cousin for allegedly raping his mother

Video7 hours ago

Thaiger Unfiltered

World8 hours ago

Monkeypox victims told to avoid animals after pet dog is infected

Thailand8 hours ago

Elephant rips mahout’s body in half in southern Thailand

Thailand9 hours ago

2 men on a motorcycle rob a gas station in Chon Buri

Thailand10 hours ago

PM Prayut suggests studying Buddhism to cope with rising electricity bills in Thailand

Thailand10 hours ago

Indian man arrested for smuggling 17 live animals out of Thailand

Thailand11 months ago

Morning Top Stories Thailand | Police to end protests, Human Trafficking | September 14

Thailand1 year ago

Thailand News Today | Thai Airways in rehab, All go for Songkran | March 4

Tourism1 year ago

Phuket’s nightlife. Yes, bars and clubs are still open | VIDEO

Phuket1 year ago

Thailand News Today | Covid passport talks, Thai Airways heads to court | March 2

Tourism1 year ago

Phuket Thai food treats you need to try | VIDEO

Thailand1 year ago

Thailand News Today | Bars, pubs and restaurants ‘sort of’ back to normal | Feb 23

Tourism1 year ago

In search of Cat & Dog Cafés in Phuket Town | VIDEO

Thailand2 years ago

Thailand News Today | Gambling crackdown, Seafood market to reopen, Vlogger challenge | Jan 21

Thailand2 years ago

Thailand News Today | Covid testing for visas, Business impact, Vaccine approval | January 19

Thailand2 years ago

Thailand News Today | Weekend Bangkok bombs, Thailand fires, Covid update | January 18

Thailand2 years ago

Thailand News Today | Stray car on runway, Indonesian quake, 300 baht tourist fee | January 15

Thailand2 years ago

Thailand News Today | Governor off respirator, sex-trafficking arrest, condo prices falling | January 14

Thailand2 years ago

Thailand News Today | Chinese vaccine, Thailand ‘drug hub’, Covid update | January 13

Thailand2 years ago

Thailand News Today | Bangkok may ease restrictions, Phuket bar curfew, Vaccine roll out | January 12

Thailand2 years ago

Thailand News Today | Covid latest, Cockfights closed down, Bryde’s Whale beached | January 11