Mold is something many homebuyers worry about. I understand why. Mold is a sign that moisture is present. It can damage the home. It can affect your comfort and possibly your health. And in New Jersey we have a lot of basements. We have crawlspaces. We have humid summers and cold winters. All of these conditions can create the perfect environment for mold growth if the home is not kept dry.
During a normal NJ home inspection I look for visible signs of moisture or staining. I look for musty odors. I look for areas that are vulnerable. But mold is not always visible. Sometimes the air in the home holds the only clues. Mold can be hidden behind walls, under carpet, inside HVAC systems, or on the underside of roof sheathing in the attic. If you cannot see it, you cannot judge the severity.
This is why a mold inspection or air testing can be a smart choice before buying a home. It gives information that you cannot get from a visual inspection alone.
If you would like more information about home inspections in New Jersey, you can visit my website where I explain NJ home inspection services and what NJ home inspectors look for in a home.
Mold problems start with moisture
Mold cannot grow unless there is moisture. So if mold is present it means water is present or has been present. The key is figuring out the source. Some common moisture problems include:
Attic condensation due to poor ventilation
Roof leaks that were never fully corrected
Basement drainage issues
Bathrooms without proper exhaust ventilation
AC systems with clogged or untrapped condensate lines
Crawlspaces with exposed soil and high humidity
Plumbing leaks inside the walls
Ice dams in winter causing moisture in ceiling cavities
Moisture does not always show itself immediately. A leak can drip inside a wall or ceiling for a long time before it becomes visible. By then the repair may be significant.
Mold can impact daily comfort and well-being
Everyone reacts differently to mold. Some people notice it immediately. Others do not feel anything. Someone in the home may have:
Sinus irritation
Itchy eyes
Headaches
Coughing
Tight chest or trouble breathing
Fatigue
People with asthma or mold allergies may feel much worse. A home should be comfortable to live in. You should not worry every day about the air you are breathing.
Repairs can become expensive if mold is ignored
When mold is found early the fix might be simple. Clean it up. Improve ventilation. Control humidity. But in homes where the issue has gone on for years, repairs can be costly. I have seen homes where all the drywall in a basement had to be removed. I have seen attics where most of the roof sheathing needed to be replaced because the mold was widespread.
Testing gives you a chance to solve the issue early before it becomes a large project.
Air sampling looks for what the eye cannot see
During mold testing I collect indoor air samples from different areas of the home. I also collect an outdoor control sample. A certified laboratory compares the indoor levels to the natural outdoor levels. If the indoor levels are higher or if certain mold types show up inside that are not outdoors, then the home has elevated conditions that should be addressed.
The lab report will identify:
Which molds are present
How much of each type is present
Whether the indoor levels are considered elevated
Whether there is likely a hidden moisture source
This gives you valuable information about the current indoor air quality.
Mold testing strengthens the overall inspection
A home inspection is visual. It gives you a strong overview of the home’s condition. But mold air testing gives you an even deeper understanding. It answers one of the most important questions buyers ask:
Is the air in this home acceptable for us
If someone in the family has allergies or sensitivities, this becomes very important. Even if nobody has symptoms now, you want to avoid hidden problems that could show up later.
When should you consider mold testing
These are good situations to add mold testing:
The home has a basement or crawlspace
There are visible stains or musty odors
The home has been vacant for a long time
The home is older
There was a past water leak or flood
Bathrooms do not have working exhaust fans
Someone in the family has allergies or asthma
If any of these apply, air sampling will give you important information before you finalize your investment.
Mold is not the end of the world
Mold can sound scary. But it is manageable once you know where it is coming from. The important part is knowing. If a home has a moisture issue you can fix it. If you do not know about it you live with the problem every single day without realizing it.
I find mold related concerns in many homes throughout New Jersey. The sooner you know what is happening inside the walls and in the air the easier it is to correct.
If you have concerns about mold or moisture during a NJ home inspection, I am always here to help answer questions.
About the author
My name is John Martino. I am a Board Certified Master Home Inspector and owner of LookSmart Home Inspections in New Jersey. I have inspected thousands of homes over the past 25 years. My job is simple. I help you understand the home you are buying so you can make a confident decision.