Its hard to gauge anything off of a cheapo meter, but if and I mean if, we were to assume it was reading effectively, the numbers are too high. Some of the unfinished wood you see on the market has been kiln-dried to reduce its water moisture content to around 8% so that it wont suffer from moisture-related defects like warping and buckling. Down pour of rain onto underlayment of attached garage. Lay the panels perpendicular to floor joists, allowing 1/4 inch of space between panels and the wall. Hug the ones you love when you see them! My question for you is: after a smallish unheated underground space (similar to a basement, i.e. Should I wait for the slabs to be within that 6-9% to cut and glue? These are the "safest" conditions for most types of woodbetween 60 and 80 degrees Fahrenheit and 30% to 50% RH. Jerry, From a moisture standpoint, water in the basement can over time absorb into your subfloor. However, the company who maintains the dehumidifier said he tested some of the joist which he said only registered 10 on his device. Good luck. Second, would the same pine slab, would it be okay to use for a side table or Kitchen island. Mold and fungus in the crawl space can definitely become a problem, but dont be fooled into thinking that a Borate spray HAS to be applied in EVERY situation. The air vents stay closed year round. Thank You. Your reading of 12.5% tells me it is workable. Finally the question I have is I-used your Wood H2O app and the humidity here (outside) is 55% and the temperature is near 70 (inside)am I correct that 10% is what Is the acceptable moisture of the wood should be for furniture building? I do not have a hygrometer or a moisture meter as I am a hobbyist. As long as the moisture content does not exceed those readings you should be ok. The excess moisture source must be immediately corrected, and the situation carefully monitored until the WMC returns to the 12-16 range. . Best of luck with your project. Once the summer cooling season ends, and the A/C is shut off, and the outside air cools, and the humidity drops significantly, the cool dry air now flowing beneath the home dries out the floor joists. Thanks for any help you can provide! This will stop the wet/dry cycle that exists every year, in every ventilated crawl space containing A/C ductwork in the SE United States, over their lifetime. Wood in buildings usually has a wood moisture content of 5% to 15%. There are two main ways of measuring wood moisture content: oven-dry testing and moisture meter testing. Typical moisture content for furniture in a home is 6-9%. I have an unusual question, if I was to sandwich recycled paper (similar to hardwood floor paper only heavier) between 2 layers of wood as a draft stop what should the moisture content be to avoid the paper absorbing any water and ending up with a mold issue thanks in advance for any info you can provide. Lower differential means slower heat loss. Thank you. Timber framing needs to be dried to acceptable moisture content levels as stipulated in NZS 3602:2003 Timber and wood-based products for use in building. Do you think that heated floor actually help to dry or do they make things worse and more humid! The inspector said his meter reading taken from my basement on subflooring/joists/framing was too high. Colorado is cold and dry. I have a black walnut slabbed up that has been air drying outside for 2 yrs. Wood shrinks or swells as its moisture content changes, but only when water is taken up or given off from the cell walls. Currently reading a 12.5%. WagnerMeters 1.93K subscribers 3.2K views 1 year ago Hardwood Flooring - Tips & Problems Do you work with wood? What is the acceptable water/moisture content in cassia bark?- in south east asia. Yes, it is possible to have a moisture content reading of 99.9%. I was able to get the MC down to 15%. Treated wood is typically still wet when its delivered to the job site. I had a quick looked around the crawl space and didnt notice any structure damage. For example, a 26 Southern Pine joist can span 12'. I think mine is +-3% Is it possible being near the door just means greater humidity and there isnt actually a leak? You can check for moisture by using a moisture meter. info@rlcengineering.com Production, storage, delivery and construction and in-use conditions that will prevent exposure to external or internal moisture or conditions that would allow the moisture content to exceed 18% at any time: Untreated Douglas fir: Framing in a low-risk building and meeting the requirements of B2/AS1 paragraph 3.2.2.2: Where there is a risk of . Be on the lookout for flooring failures such as swelling, buckling, cupping, etc. If a board reads 100% (Difficult to measure accurately) then the weight of the water equals the weight of that wood. The thickness of flooring joists themselves will be determined by what's going on top of them. The plumber said that the floor has an elevated moisture reading and took a photo showing the 99.9% (maximum reading) on the meter while the meter was on the floor. About how long do you think we should allow the new wood to acclimate in the end use environment before installing it? My last Wagner was appropriated by the individual who appropriated other tools out of my old sho. I wanted to know if is there any standard which specifies the acceptable range of moisture content for wood used in packaging industry like pine wood. Thank you. The moisture content of freshly cut wood is typically somewhere between 40-200%. This document describes the meaning and use of readings from a wood moisture meter. . The home inspectors working for fees today seem to have one primary motive in mind: to cover their liabilities. Though on occasion, they are made of 2x10s and tripled for additional . Where floor s have been covered by previous floor coverings acceptable values are up to 3.5% and 80% in-slab RH. provide a good substrate for a wide range of wet area finishes. Hello and thanks for writing in. Wood moisture content is always varying. I live in upstate South Carolina. Logs, siding, shiplap, and T&G must be kiln-dried to stop the wood from shrinking or pulling apart. Very educational! I also applied Boracare (boron) that has stopped minor beetle damage. moisture meter testing a floor joist In this image we measure a reading of 37% in this floor joist. moisture will typically measure 7-10%. I suggested replacing my dehumidifier (Sears brand, bucket collection) which has been inoperable this past year. The manufacturer of the oil-based poly should have a specification on the maximum allowable moisture content of the wood. What % does it have to get down to before it would be usable to make a table top ? We dont know if we still have leaks? It is also a good idea to use a moisture meter after the three weeks just to make sure. Do you have a suggestion? What do you recommend the reader to be at before insulation and drywall on new construction? Maximum Moisture Content Of Concrete This is a nominal value most product manufacturers specify when concrete is dry enough to allow their product to lay down on it. The same study showed a 40% loss in joint strength and concluded that a 20% MC may significantly compromise shear resistance of exterior walls. Should it be less? Position plywood panels at a 2-inch offset from the structural subfloor seams. The cause that may produce this will be discussed in the section "Biodeteration of flood". It is important to have the same temperature and humidity during those 2 weeks that will be maintained after installation. As lumber dries, it may split, cup and warp. My house was built in 1927. I suspect the screws may be skewing the measurements. So the question is are those burrs or fuzzing on the edges?, Wed love to have you give us a call to discuss which moisture meter is best for you. I dont know what type of floor you have, but if it gets wet enough, about 25% moisture content or higher, mold can grow. Should you check moisture levels on a trailor floor on a massive rainy day? I not sure if this is normal, related to the re-shim or need to install a crawl space dehumidifier to slow the progression? . Water was coming out of this outlet and onto the floor? Had fans and dehumidifer running for 17 days starting 2 days after leak. Hi Larry, We are a joinery company and we have a project here in UAE which is located in another part of the emirates and the humidity in that area is very high especially during summer because it is near the coastal area. Joists that sit below end matched joints must be at least 35mm thick. The interior wood moisture level should be 12% or lower before painting. Many of our customers are successfully using our hand held moisture meters on engineered flooring. The crawl space must be a minimum of 18" to the bottom of the floor joists, and the soil in the crawl space covered with a heavy duty plastic moisture barrier, and sealed at the seams. We found the problem and the leak was resolve quickly! Good luck. Am i looking at mold if i dont rip the floor out? Oh no! Use a level to determine if the floor is level within 3/16-inch change per 10 feet. Just press the scanning plate against the woods surface, turn on the meter, and receive the reading. Good moisture content for hardwoods is 6% to 9% moisture. A subfloor needs to be clean, dry, level and structurally sound. They delivered the wood one day, and began to stain and install it over the next two days, finishing on the 6th day. The average RH of the environment where the wood will be used. Squeaks from subfloors The floor installer is often the 'first cab off the rank' when there is a squeaking floor and the problem may The supplier says they dry the wood to an MC of 14%, which is according to them the standard for outdoor furniture. So what do you think is the ideal moisture% I should dry them to before rotary polishing them? Eventually, this internal moisture will evaporate by itself. somewhere. You may be picking up something behind the sheetrock. Im not sure which part of Europe you are from, but typically the Indonesian climate is very humid compared to other parts of the world. It is best to allow the wood to equilibrate to the room environment. 10 14% moisture content is too high. You should be ok as long as the moisture content does not get worse (higher). of water/day/1000 sq. Some wood you buy from a lumber store can be higher than 14% but typically range between 12-14%. I requested the treated lumber be brought in a few weeks prior to build, stickered and put under cover to acclimate and dry it. In March of this year I had new white oak 2 flooring installed. The wood and varnish appear otherwise pristine, uncracked and not bubbled or clouded in any way. I may have missed this already but I have a few quick questions. He added that plastic sheet ground covering that his company laid over my crawl space had been moved in spots and that I no longer had full coverage. Larry: I recently had my annual termite inspection. Ideally Ill wait until reaching final drying but sometimes I need to use wood before that point. We dont know if we still should be having a commercial drying process? These WMC readings are usually provided by pest control operators, and are included in the termite letter (form CL-100 Official South Carolina Wood Infestation Report). On truss/joist spacing of 16" (406mm) o/c or less, the industry standard for single- panel subflooring is nominal 5/8" (19/32", 15.1 mm) CD Exposure 1 Plywood subfloor panels ( CD Exposure 1) or 23/32" OSB Exposure 1 subfloor panels, 4' x 8' sheets. Failure to do this will result in warping, cracking, and other problems after the construction of the wood product. Drying teak hardwood from a humid climate, for use outdoors in a much drier European climate? I gladly obliged. The installer should then check the moisture content of multiple boards and average the results. 16% 20% Readings in this range indicate a possible elevated level of wood moisture. As a result, the normal moisture meter reading for these materials in between 0.5% and 1%. This only occurs when wood changes moisture content below the fibre saturation point. The other thing to consider is examining how water is entering your crawl space. As with the hardwood flooring, it is essential to check the OSB's moisture content using a moisture meter. Softwoods, such as spruce, can have more moisture. This is the standard in the construction industry. The builder's warranty representative came out and measured the moisture levels with a moisture meter. I have a couple questions. We are checking moisture levels in several areas each day. Floor joists transfer loads to the vertical beams of the house. Therefore, in order to avoid post-construction problems, a woodworker building a cabinet for this particular interior environment would need to dry his wood to a moisture content of 8- 9% beforehand and then keep it that dry during the construction process. Timber logs & Lumber into India company remained actively involved in harvesting and sale of Hardwood logs of Indian origin. We also have an Orion 950 moisture meter that will automatically give you EMC (Equilibrium Moisture Content) and other useful statistics. Floors should be: level within a 3mm deviation per 1m for floors up to 6m across (measured at the furthest points across the full width of the floor) a maximum of 20mm out of level for floors over 6m across flat within a 5mm deviation, measured using a 2m straight edge with equal offsets. I built the tables in west Texas, but their final home is in Colorado. Prior to the flooring installation, make sure your subfloor has not experienced leaks or other water damage. Larry Loffer is a senior technician at Wagner Meters, where he has over 30 years of experience in wood moisture measurement. The problem is some of the water made its way under the basmenet bathroom floor which is dricor with electric heating wire on top, then tiles, and unfortunately it looks like some of the dricor wood got wet as well! Should I wait? hL I am presently drying it to around 8%-10% and then rotary polishing it, but I am facing the issue of burrs on the edges.
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