Moisture Meters: The Essential Tool for Water Damage Restoration

What starts as a leak under your sink, condensation around your window, or runoff in your backyard might end with you tearing out rotting drywall and moldy carpet, and replacing your swollen wood framing. It just goes to show why water damage restoration is so important.

Fortunately, the sooner you address the problem, repair the leak, and restore the damage, the less damage you’ll have to worry about in the long run.

The pros in the restoration industry do this by replacing unsalvageable materials, using HVAC systems to dry the building, and sanitizing areas that have mold or mildew.²

But before they do any of this, they have to find where the excess moisture is located.

Some problem areas are more noticeable than others—standing water, mold, and musty smells are a dead giveaway of moisture issues.

Unfortunately, most moisture problems are more than meets the eye. You need a special tool—a moisture meter—to identify it.

Learn more about moisture meters and their crucial role in water damage restoration as you uncover:

• The Difference Moisture Meters Make
• When, How, and Where To Use Them
• What To Look For in a Meter
• Where To Find Quality Meters

First, let’s look at what makes moisture testing so important.

What Difference Do Moisture Meters Make?

Moisture isn’t just harmful—it’s sneaky. What starts as a small leak can grow into serious moisture damage, all without you noticing.

But with a moisture meter, you don’t have to be in the dark. It shines a spotlight on moisture problem areas you would have otherwise missed or dismissed, helping you save your home, your wallet, and your health.

Failing to detect and address moisture problem areas can lead to:

• Warping
• Swelling
• Water stains
• Floor delamination
• Rot
• Mold
• Pest infestation

On top of requiring expensive repairs, these problems can threaten the structural integrity of your home and jeopardize your health (especially where mold is concerned).³

But with a moisture meter, you can catch these problems earlier to minimize damage.⁴

Overall, moisture testing helps:⁵

1) You find moisture problem areas, so you know what needs to be dried
2) You plan your drying process (and evaluate its progression)
3) You get hard evidence to show your insurance company for water damage claims
4) You prove your problem areas have reached the right moisture level

But before you can do that, you need to understand what moisture meters can do, where they’re limited, and what best practices you need to follow for thorough inspection.

When, How, and Where To Use Them

Restoration contractors use moisture meters to locate high-moisture areas and evaluate their drying progress.

They take moisture readings at least three times:⁶

1. During initial inspection
2. Throughout the restoration process to monitor drying progress
3. During the final inspection, after drying and remediation are complete

Restoration professionals use wood moisture meters in two ways—to find the moisture content of wood and to locate high-moisture areas in non-wooden materials.

Wood moisture meters are specifically designed to measure the moisture content of wood. They will give you moisture content values expressed as a moisture content (MC) percentage. If the readings of your hardwood floors or wood paneling are above acceptable moisture limits for indoor materials (6-9% MC), you’ll need to dry them.

But what about materials like gypsum drywall, concrete, carpet, and laminate? How can you tell if they contain too much moisture?

Well, wood moisture meters aren’t designed to measure moisture content in non-wooden materials, but some can take readings on a relative reference scale.

This means, instead of giving you a moisture content percentage (how much moisture is in your wood), it’ll give you a moisture level on a relative scale (how wet one area of your material is compared to the rest of that material).

Let’s say you’re trying to get a read on your drywall. First, you’ll switch your meter to relative mode. Next, you’ll measure a dry piece of drywall as your reference. After that, you’ll measure the rest of the drywall. If any of those readings are substantially higher than the dry reading you took, you’ll know you’ve found a high-moisture area that needs to be dried to mitigate further moisture damage.

Relative mode can also be used to measure other non-wooden materials like OSB and concrete.

But with a whole building to search for moisture damage, where should you start looking?

You’ll definitely want to investigate any areas that bear signs of moisture damage, like:

• Warping in wood floors
• Water stains
• Mold and mildew
• Musty smells
• Damp carpet

Checking these problems will help you confirm and locate high-moisture areas so you know what has been affected by water and needs to be repaired.

Besides checking these areas, you may want to do a wide sweep of various rooms, taking multiple measurements in large areas of the floors and walls to get a general picture of the moisture condition of each room. This will help you avoid missing any moisture hotspots.

It’s also a good idea to check areas where leaks and moisture intrusion could occur. This could help you find the source of your moisture problem so you can fix it or seal it up before continuing with repairs. Common problem areas include:

• Bathrooms
• Kitchens
• Laundry rooms
• Attics
• Basements
• Around doorways or windowsills
• Around HVAC systems
• Around plumbing
• Outdoor siding
• Roofing

Once you locate high-moisture areas, you’ll want to keep testing them with a moisture meter to see how they respond to your drying efforts. You’ll want to wait until they’ve reached the appropriate moisture level (typically within 6-8% MC for indoor materials, or, if you’re measuring on a relative scale, just make sure there aren’t substantial discrepancies in material moisture levels) before making repairs.

Finally, you’ll want to test these areas once more after completing repairs to make sure that moisture problems haven’t resurfaced.

As you test, keep the limitations of moisture meters in mind.

While they can help you locate high-moisture areas where mold could occur, they can’t actually detect mold itself. They also can’t measure deep into materials, so if you’re trying to get a good idea of how much moisture is in a concrete slab, you might want to follow up with in-situ relative humidity testing.

You’ll also want to remember that moisture testing is only as good as the moisture meter you’re using.

That’s why you’ll want to find a quality moisture meter, one that can tackle moisture problems accurately and efficiently.

Moisture Meters for Water Damage Restoration Should…

If you’re looking for a meter that’s well-suited for water damage restoration, you’ll want one that:

• Is accurate
• Is durable
• Is fast
• Is pinless if you’re measuring areas that require non-invasive testing (so, most of the materials you’ll encounter when testing a residential or commercial area)
• Is easy-to-use
• Measures in relative mode
• Measures moisture conditions at different depths
• Comes with useful attachments

Let’s start with the most important quality—accuracy.

Be Accurate

The whole point of using moisture meters is to get an accurate understanding of how moisture has affected a building.

Accurate meters will show where moisture problems are and tell when they’ve been fixed, but inaccurate ones will be misleading, making you overestimate or underestimate the dryness of your materials, or miss high-moisture areas altogether.

You can’t fix problems you don’t see, so inaccurate meters will cost you more in the long run when it misses moisture damage that could have been addressed and minimized sooner.

Be Durable

Accidents are more common than you think. All it takes is letting your moisture meter slip out of your hand while you’re climbing a ladder for it to crack or dent.

That’s why it’s important to have a durable meter that can take a tumble without getting damaged.

Look for a meter with a durable build made of strong, quality materials. And if the meter comes with a protective carrying case? Even better!

Remember, durability helps you:

• Maintain accuracy: Meter calibration can be thrown off if you drop or damage it. The more durable your meter is, the less likely this is to happen.
• Prolong longevity: More durable meters don’t have to be replaced as often as flimsy ones.

Durability paired with good meter upkeep will ensure peak moisture meter performance.

Be Fast

Restoration professionals typically have a lot of ground to cover, so it’s important they have a moisture meter that can get quick readings.

Be Pinless

Unlike pin-type meters, which use pins (or electrodes) to measure moisture, pinless meters use a non-damaging sensor plate.

While pin meters can be a great choice for some applications (like if you need to measure into a rough or uneven surface), pinless meters are a better inspection tool for the simple fact that they don’t leave behind pinholes you need to repair. This is especially true if you’re measuring drywall where holes and patchwork will be noticeable.

Not to mention, pinless meters are much faster and easier to use. With a pinless moisture meter, you can skip the hassle of driving in and removing pins and instead get readings at the push of a button.

Be Easy-To-Use

If you’re inspecting an entire building, you’ll be doing a lot of testing. You won’t want a meter that’s so complicated you have to whip out the instruction manual every time you want to use it.

The more simple and straightforward your meter is, the better. The buttons and display should be clear. The meter should be easy to carry. It should have a backlit LCD screen so you can see your readings even if you’re in a dark attic or crawlspace.

Some meters even come with a hold function that keeps your readings on the screen so you have more time to record your data.

Measure in Relative Mode

Water damage restoration isn’t limited to wood. Besides checking the moisture content of wooden floors and panels, it’s equally important that you examine the drywall, carpet, and so on.

That’s why it pays to have a meter with a relative mode so you can get relative readings on any of these non-wooden materials.

Measure at Different Depths

The thickness of the building materials you need to measure may vary, which is why you’ll want a meter that can adjust to different depths.

If you’re using pin meters, all you have to do is switch out your pins for a longer or shorter size.

Some pinless meters have a special setting you can select to measure at a different depth.

Come with Useful Attachments

Some meters come with handy attachments to make your life easier.

Some come with extenders that allow you to place your meter in hard-to-reach places without hurting your back or forcing you to climb a ladder.

Another helpful attachment to look out for is a calibration verification reference. This device helps you verify the accuracy of your meter by making sure the calibration hasn’t been thrown off.

In general, the faster, easier, and more accurate a moisture meter is, the better, faster, and more thorough your water damage restoration efforts will be.

Find Quality Moisture Meters Here

Moisture testing takes the guesswork out of identifying moisture damage and helps you develop a game plan for drying and restoring a damaged building to its former glory.

Choose Bessemeter for all of your moisture testing needs.

Our meters:

• Are accurate, fast, and easy to use
• Come with a protective carrying case
• Have adjustable species settings
• Have the option of adding a calibration verification reference
• Have a relative mode
• Offer different depth mode options (including a dual depth meter that allows you to take shallow and deep moisture measurements)
• Have a hold function to make data recording easy
• Have a bright digital display

1. “Water Damage Is the Most Common Insurance Claim in the U.S.,” EMC Security. (↑)
2. “Key Steps in the Water Damage Restoration Process Explained,” Restoration Experts, Aug. 25, 2025. (↑)
3. Ibid. (↑)
4. Allura, Syed, “How Restoration Technicians Use Moisture Meters During Cleanup?” NSH Home Services, Nov. 13, 2025; “Residential Moisture Mapping,” ATI Restoration. (↑)
5. Allura. (↑)
6. “How the Different Parts of a Moisture Meter Work in Water Damage Restoration,” PDQ Restoration. (↑)