Keep painted, treated, glued, contaminated, wet, or deteriorated wood out of a residential fireplace. These materials can release harmful substances, create excessive smoke, or contribute to creosote buildup. Burn only clean, dry, seasoned firewood; the U.S. Environmental Protection Agency (EPA) says moisture below 20 percent is best.
Wood and other materials to keep out of your fireplace
EPA guidance for residential wood burning identifies several materials that are unsafe or unsuitable. When you cannot tell whether a piece is treated, coated, or contaminated, do not use it as firewood.
Painted, coated, or pressure-treated wood
Do not burn painted or coated lumber, or wood treated with preservatives. Smoke and ash from these materials can contain harmful chemicals. EPA specifically warns against burning creosote-treated and other preservative-treated wood in residential settings because people can inhale toxic chemicals; its warning includes chromated copper arsenate (CCA)-treated wood. See EPA’s best wood-burning practices, its creosote guidance, and its CCA guidance.
Plywood, particle board, and glued wood products
Keep plywood, particle board, and other manufactured wood products that contain glue out of a fireplace. A clean appearance does not make construction scraps equivalent to untreated firewood. EPA includes these materials on its do-not-burn list.
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- ✅【Accurate & Trusted Measures, Identify Moisture Level】With accurate & trusted performance, Mecurate moisture meter can detect moisture content from wood to building material. A reliable must-have tool for home owners, woodworkers, painters & architects to detect moisture level and spot hidden damage, which would save potential expensive repairs.
- ✅【2 Mode 8 Scale,Guaranteed Accuracy】With 0.1% resolution, the moisture meter has 2 mode : wood and building material. Wood mode has 8 calibrated scales for different wood types with full list on manual. Integrated with "Self-Testing" Aid on protective cap, users can calibrate the tool before use.
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- ✅【Packed for Convenience】Comes with a water resistant carry pouch. A "Wood Type Quick-Search Index Table" printed on back of the device, help adjust setup quick-and-easy.A full wood list on user manual to help quick identify correct scale.
Ocean driftwood
Do not burn ocean driftwood in a residential fireplace. EPA lists it among materials to avoid; choose ordinary clean firewood instead. EPA’s guidance does not recommend treating beach-collected wood as fireplace fuel.
Wet, green, or unseasoned wood
EPA’s advice is direct: “Do not burn wet or green (unseasoned) wood.” It produces more smoke, and that smoke can leave more creosote in the chimney. EPA best practices and its wood-burning appliance FAQ explain the risks.
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- HUMIDITY SENSOR: Our handy meter tool can quickly determine what level of remediation is needed to keep your family safe from black mold. High levels of dampness that go untreated are the leading cause of harmful fungus growth in the home.
- WATER LEAK DETECTOR: Finding the moisture content in your wood or drywall is the first step in early prevention. Continuously check and test suspicious water stains around the house so you can determine whether the area is wet or has already dried. Low, medium and high moisture tones and on-screen icons, Reading HOLD button
- MOISTURE READER: The mold test features large 0.3" high digits in a backlit LCD for quick and easy detecting. Our mildew scanner includes extra 8mm stainless steel pins, a protective cap that doubles as a calibration checker, and a “9V” battery.
- MOLD TESTER: For an accurate test read, stick the stainless steel pins into the surface of what you're measuring. The gauge has a broad range of 5 - 50% for wood and 1.5 - 33% for building materials such as concrete and drywall.
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Rotted, diseased, or moldy wood
Do not use wood that is rotted, diseased, or moldy. EPA lists these conditions as unsuitable for burning in a wood-burning appliance. Check EPA’s material guidance.
Household trash and printed or synthetic materials
A fireplace is not a waste incinerator. Do not burn household trash, including cardboard, plastic, foam, or colored printed materials such as magazines, boxes, and wrappers. EPA warns that burning these materials can release harmful pollutants. See EPA’s full do-not-burn guidance.
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- FIND HIDDEN WALL MOISTURE EARLY — Check suspicious drywall and building surfaces after a leak, water stain, or other moisture concern. Detect abnormal moisture before a small issue develops into more extensive damage and costly repairs
- CHECK BEFORE YOU REPAIR — Don't rely on a wall looking or feeling dry. Use the moisture meter to check questionable areas before painting, repairing, or covering the surface, helping you make decisions based on actual moisture readings.
- CHECK FIREWOOD BEFORE YOU BURN — Test firewood before placing it in your fireplace or wood stove. Knowing the moisture level of your firewood helps you choose wood that is ready for burning and avoid relying on appearance alone.
- PIN-TYPE TESTING FOR DIRECT MEASUREMENTS — The contact pins penetrate the material to measure moisture inside wood and building materials. This makes it useful for checking areas where surface conditions may not tell the whole story.
- ONE TOOL FOR TWO IMPORTANT HOME CHECKS — Keep it ready for two practical jobs: checking walls for hidden moisture and checking firewood before burning. A simple way to make informed decisions before a moisture problem becomes expensive or wood goes into the fireplace.
How to check whether firewood is dry enough
Use clean, seasoned firewood with moisture content below 20 percent, the EPA’s stated best target. A firewood moisture meter is a practical way to check rather than relying on appearance alone. EPA’s moisture and safety guidance recommends checking wood with a meter.
Moisture matters because a fire must spend energy evaporating water in wet wood. That leaves more smoke, and as smoke cools in the chimney it can deposit creosote. Creosote is combustible residue; if enough accumulates on chimney walls, it can lead to a chimney fire. EPA explains this in its creosote FAQ.
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- Easy to Read with Large LCD Screen: This wood moisture meter is easy to get an accurate reading from the surface of materials and displays accurate moisture readings on the 2.25" big screen. Use this handheld meter to check the moisture content in firewood or drywall, it can stand up on the table, the moisture content is displayed with a bar graph and percentage (_%RH) on the screen. Date Hold and Max/Min function is used to freezes readings, useful for writing down data
- Tricolor Backlight Display, Easy to Use: TopTes Moisture Meter TS-630 features an HD tri-color backlight to easily know if the wood/wall humidity is Dry, Moist, or Wet. Green backlight for Low moisture, orange backlight for middle moisture, and red moisture for high moisture. After selecting the mode, and putting pins into the firewood, easy and quick to get a visible alert from the clear screen
- Seven Calibration Scales, Two Material Mode: It is designed with built-in characteristic parameters of 7 calibration scales for wood and building material, ranging from 0.0% to 57%. This humidity meter is perfect for woodworking, water damage restoration, building construction, and home renovation. Easily Check and test suspicious water leaks around the wall/floor so you can quickly determine what level of remediation is needed
- Pin Type & Battery Operated: TopTes TS-630 moisture meter is a pin-type moisture meter and operates on batteries. With a high precision multi-material sensor, DON’T need calibration. It’ll support an accurate reading after inserting the stainless steel pins into the surface of the wood or building materials. It will auto shut off after 10 minutes of non-use to help save energy. A low-battery indicator will appear on the screen when the battery is running out
- What's in the Box: One TS-630 Moisture Meter, three AAA Batteries, one User Manual, one Carry Pouch, one Pair of Test Pins, one Mini Wrench
What to do with questionable or treated wood
- Do not test-burn it. If you cannot establish that scrap wood is clean, untreated, and free of coatings or glue, leave it out of the fireplace.
- Follow local disposal directions. Rules for treated wood disposal vary; consult local waste guidance. EPA’s creosote information includes disposal guidance for treated wood.
- Use fireplace-ready fuel. Choose dry, seasoned, clean firewood and follow the appliance manufacturer’s instructions.
Reduce smoke and protect the chimney
For wood that is appropriate to burn, EPA recommends a hot fire with good airflow rather than allowing it to smolder. Keep the appliance door closed except when loading or stoking a live fire, and follow the manufacturer’s instructions. Observe local air-quality advisories and burn restrictions.
Arrange an annual inspection and service by a certified professional, and have the chimney cleaned annually by a certified chimney sweep, as EPA recommends. Smoke inside the home is a sign that something may be wrong; stop treating it as normal and arrange an inspection. EPA’s service and safety guidance covers these steps.
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1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteHandle fireplace ashes safely
Put ashes in a covered metal container and store it outdoors on a nonflammable surface. Keep a fire extinguisher handy. Do not assume ashes are cold because the fire appears to be out; follow your local disposal instructions.
How current is this guidance?
This is U.S.-focused advice based on EPA pages accessed October 7, 2026. EPA says its Burn Wise program ran from 2009 to 2025 and that the website is now a historic record, with content no longer updated after October 30, 2025. EPA’s pesticide pages also provide guidance on creosote- and CCA-treated wood. Local disposal requirements and burn restrictions can differ, so check local authorities as well as your appliance instructions.
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