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Prompt Testing. Effective Remediation Protocols.

Water Damage Assessments

Independent, Test-Only Mold & Moisture Testing After Leaks, Plumbing Failures, or — El Niño Rain Storms.


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Your Friendly Test Only Inspector - Tanjun Mold Inspections

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24–48 Hour Window Matters

Why Test For Mold After a Leak?

Mold can begin growing within 24–48 hours of a water leak — often in hidden areas like walls, ceilings, or under flooring.

Even when mold isn’t visible, it can potentially:

  • !Impact indoor air quality and health
  • !Weaken or damage building materials
  • !Lead to more extensive and costly repairs if left undetected

Early testing helps identify whether mold is present, direct proper cleanup and remediation, and provide documentation that may be required for insurance claims or property records.

Visual Checks. Moisture Readings. Lab Sampling.

Post Water Damage Mold Testing

1. Mold Investigations

Black Mold on baseboard. Inspection reveals visible mold growth on the surface.

After water damage is discovered, we inspect for visible mold growth.

At times, mold growth may become visible on the surface of building materials. Sometimes, the mold can be found behind baseboards or under floor panels.

Surface samples may be collected for analysis by a certified laboratory to confirm and assess the extent of the mold growth problem.

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2. Moisture Testing

High moisture content (MC) reading on building materials. Tanjun Mold Inspections inspector performing MC testing during a Water Damage assessment.

Moisture inspections help identify areas at risk for mold growth.

Signs of water damage include stains, discoloration, bubbling, or deformation of building materials.

We use professional moisture meters to identify elevated moisture levels that may indicate ongoing intrusion or favorable conditions for mold growth.

Moisture Testing Info

3. Indoor Air Quality (IAQ)

IAQ (Indoor Air Quality) Testing. Tanjun Mold Inspections inspector performing indoor air quality testing during a Water Damage assessment.

Air Testing For Mold After Water Damage. Mold can begin growing within 24–48 hours after water damage, often without visible signs. Indoor air quality (IAQ) testing can be an effective method for detecting hidden mold growth.

Air samples are collected and analyzed to determine whether mold spore levels inside the property are elevated compared to outdoor levels. Even low concentrations of certain mold species — such as Chaetomium or Stachybotrys — can indicate an indoor mold problem requiring further investigation.

IAQ Testing
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EDUCATOR. NEIGHBOR. SPECIALIST.

Why Customers Choose
Tanjun Mold Inspections

Educator

Your Friendly Tech Interpreter

Your Friendly Test Only Inspector - Tanjun Mold Inspections

"Takes Time to Teach..."

We take time — to provide a friendly and understandable explanation of the inspection findings and the technical details of the report to customers — who are not lab techs.

Neighbor

Your Local Small Business

Your Friendly Small Business - Tanjun Mold Inspections

"Opposite of Corporate..."

Since we're not a chain or franchise — we are not under pressure to meet corporate sales quotas. Instead, we invest in the time and personal attention needed for each unique job.

Specialist

Your Certified Lab Service

Your Certified Lab Service - Tanjun Mold Inspections

AIHA Certified

All air and surface samples are logged and processed utilizing trusted, independent AIHA-accredited laboratories with secure chain-of-custody protocols. Reliable data — means informed decisions.

The 3 Vital Methods To Assess Fungal Ecology

Why We Often Combine 3 Methods

Since each inspection method has limitations, relying on just one may miss important details.
Each method answers different mold and water damage questions — Combining all three contributes to a more thorough investigation — both before and after mold remediation.

Method 01

Visual Inspection

Purpose

Checks for visible mold growth, signs of water damage (like stains or bubbling), condensation, and moisture intrusion (such as by windows, sinks, and ceilings)

Limitations

Eyes cannot detect microscopic spores in your air — nor can it see inside walls or under floors. A room can look clean — but have elevated mold spore counts in the air. Surfaces can look dry — but retain high moisture.

See How We Solve This

Combine with Moisture Testing — to detect moisture behind walls or flooring and utilize Air Sampling — to measure invisible airborne spore levels in the breathing zone. Wall Cavity air sampling may be useful if hidden mold growth is suspected behind the walls.

Method 02

Moisture Testing

Purpose

Uses moisture meters to check for high moisture content (MC) such as in walls or flooring. Since mold needs moisture, checking for moisture is key.

Limitations

Moisture meters cannot detect (1) elevated mold spore counts in the air (2) remaining mold from past water damage or (3) if the moisture is trapped deeper into the wall cavity or building materials — even if there is mold growth.

See How We Solve This

Combine with a Visual Inspection — to check if there is visible mold on various building materials. If mold colonization inside walls or flooring causes spores to travel into the ambient air, Air Sampling may be able to detect it. Wall cavity air sampling may be able to detect mold growth behind the walls.

Method 03

Air Sampling

Purpose

Detects (1) mold types and (2) spore counts in the air — helpful for assessing fungal ecology for pre-remediation and essential for post-remediation clearance testing.

Limitations

Although elevated mold spores typically are found close to the growth source, air samples cannot identify the source of the leak. Mold spores may stay inside walls or flooring. Also, heavier and stickier spores may not become easily airborne.

See How We Solve This

Combine with Visual Inspections & Moisture Testing to check for areas at risk for mold growth or to trace elevated spore counts back to the source of the moisture intrusion.

Industry Standard: IICRC S520 Fungal Ecology

Can Visual Checks and Moisture Meters Alone Verify a Condition 1 Status?

No. Since mold spores are not visible when airborne, lab testing is required to assess fungal ecology. Under professional IICRC S520 guidelines, a home's fungal condition falls into three Conditions that eyes and moisture meters alone cannot verify:

Clearance - Post-Remediation Verification (PRV) Passing Clearance means the environment has returned to a Condition 1 status. Practically, this requires performing air sampling inside the containment in order to check the mold types and spore counts detected.
Pre-Remediation Inspections During an inspection where water damage has been experienced, or where there is risk of mold growth, a visual inspection should be combined with moisture content testing and where appropriate, air or surface sampling should be performed to assess the fungal ecology.
● Condition 1 — Normal Fungal Ecology An indoor environment that reflects a normal fungal ecology.
● Condition 2 — Settled Spores An indoor environment that is contaminated with some settled spores.
● Condition 3 — Actual Growth An indoor environment that is contaminated with actual mold growth and associated spores.
AIHA LAP Accredited Laboratory Logo Badge

Samples are sent to an AIHA (American Industrial Hygiene Association) accredited laboratory that specializes in environmental microbiology.

ENVIRONMENTAL MICROBIOLOGY


Lab Reports

What Kind of Information is Contained in Lab Reports?

They provide very technical and detailed information that we analyze and summarize so that it is more friendly and useful to our customers.

The lab analysis will report on any mold found, the amount and the mold types detected (such as Aspergillus/Penicillium, Stachybotrys, Chaetomium, Ulocladium). We determine whether the sample indicates:

  • NORMAL FUNGAL ECOLOGY An indoor environment that reflects a normal fungal ecology
  • SETTLED SPORES An indoor environment that is contaminated with some settled spores
  • ACTUAL GROWTH An indoor environment that is contaminated with actual mold growth and associated spores
FUNGAL DICTIONARY

What are common mold types found indoors?

Select a mold genus below to review its environmental characteristics and common indoor substrates.

Lab technician holding petri dish with mold growth analysis
Alternaria

Alternaria is one of the most common molds and is abundant worldwide. This genus contains around 40 to 50 different species, only a few of which are commonly found indoors. Alternaria spores are easily dispersed through the air by wind. Alternaria can grow on a variety of substrates indoors when moisture is present.

Cladosporium

Cladosporium is an abundant mold worldwide and is normally one of the most abundant spore types present in both indoor or outdoor air samples. This genus contains around 20 - 30 different species. Cladosporium produces dry spores that are formed in branching chains. Spores are released by twisting of the spore-bearing hyphae as they dry. Thus, the spores are most abundant in dry weather. Cladosporium can be found anywhere indoors, including textiles, bathroom tiles, wood, moist windowsills, and any wet areas in a home. Some species of Cladosporium grow at temperatures near or below 0(C) / 32(F) and can often be found on refrigerated foodstuffs and even frozen meat.

Penicillium / Aspergillus

Penicillium / Aspergillus are two separate genera of molds that are so visually similar that they are commonly discussed together as a group. Together, there are approximately 400 different species of Penicillium / Aspergillus. Penicillium / Aspergillus produce dry spore types that are easily dispersed through the air by wind. These fungi serve as a food source for mites, and therefore can be dispersed by mites and various insects as well. Penicillium / Aspergillus are found throughout the home. They are common in house dust, growing on wallpaper, wallpaper glue, decaying fabrics, wallboard, moist chipboards, and behind paint. They have also been isolated from blue rot in apples, dried foodstuffs, cheeses, fresh herbs, spices, dry cereals, nuts, onions, and oranges.

Chaetomium

Chaetomium is a common mold worldwide. This genus contains around 80 - 90 different species. Chaetomium spores are formed inside fruiting bodies. The spores are released by being forced out through a small opening in the fruiting body. The spores are then dispersed by wind, water drops, or insects. Chaetomium can grow in a variety of areas indoors, but is usually found on cellulosebased or woody materials in the home. It is very common on sheetrock paper that is or has been wet.

Stachybotrys

Stachybotrys is ubiquitous in nature. This genus contains about 15 species. Stachybotrys produces wet slimy spores and is commonly dispersed through water flow, droplets, or insect transport, less commonly through the air. Stachybotrys is common indoors on wet materials containing cellulose such as wallboard, jute, wicker, straw baskets, and other paper materials.

FAQ

Mold Frequently Asked Questions

Our Credentials


MICRO Certified Mold Inspector CMI # 86294

InterNACHI (International Association of Certified Home Inspectors) Certified Mold Inspector

Member # NACHI25081826  |  Certificate # 1755634505

IAC2 Certified, IAC2 Mold Certified (International Association of Certified Indoor Air Consultants)

Certification ID: IAC2-95070

Friendly Communications. Lab Backed Data.

Our Process

Tanjun Mold Inspections performing- Professional Performing Visual Inspections

Visual Inspections

We start with performing a visual inspection of the property, focusing on areas where there may be water damage, moisture issues or suspected mold growth.

Tanjun Mold Inspections - Advanced Tools for Taking Environmental Measurements

Environment Readings

With the help of specialized tools we may take environmental readings such as Moisture Content (MC) or humidity levels in order to identify any potential issues.

Tanjun Mold Inspections - Lab Analysis for Mold Samples

Lab Testing & Analysis

Surface and Air samples may be recommended depending on the inspection findings or customer concerns. Such samples are sent to an AIHA Accredited Lab that specializes in identifying and analyzing mold.

Tanjun Mold Inspections Providing a Comprehensive Findings and Recommendations Report

Findings & Recommendations

Once all of the data is collected, we provide a report of our findings. If a mold growth problem is identified, a Remediation Protocol is outlined.

CONTACT US

Our Process - Advanced Tools for Taking Environmental Measurements

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Let Us Know Your Situation!

PHONE Call (818) 964-1533

EMAIL tanjunmold@gmail.com

SERVICE AREAS

Los Angeles County, CA

Ventura County, CA



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Dig Deeper • Educational Guides

Tanjun Knowledge Library

Plain-language guides on mold science, indoor air quality (IAQ), hidden moisture signs, and the test-only process.

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