moisture content of wood before staining

First Item before Painting or Staining Cedar. Before any exterior wood structure can be stained, it must be clean and free of any dirt, mold, and mildew. Wood knots, moisture & sap bleeding will affect the coating if not prepared properly. Moisture content of the wood at delivery. Staining New Wood and Decking for the First Time. Visual & touch dry. Basically, wood moisture content is the weight of water in a piece of wood expressed as a percentage of oven dry weight of wood. Depending on the wood and drying conditions, you should usually wait 4 to 8 weeks after installation before staining a deck. If the levels are higher, you need to wait for the wood to dry for more days. After all, most online painting tips fail to mention that you should check the surface’s moisture levels before applying a stain or a coat of paint. The moisture content of wood means the relationship between the mass of water in it and the mass of the timber without the water. You have a brand new deck built. Once the logs are clean, measuring the moisture content of the wood is the next important step before you apply your stain or treatment. 2. Re: Moisture Content Before Staining?? Once the wood reaches a moisture level of 15% or less, it can be stained for protection If you're priming and painting new lumber, I would get a moisture meter. When painting any substrate, we must always begin with a clean, dirt and grease free surface. A pressure-washed deck requires 2-3 good drying days before treatment. Moisture is the main deterrent for all stains, oil or latex, from a moisture content within the wood itself and or weather conditions. To properly stain new wood, allow the wood to season for several months. Most types of wood will be ready to stain within 4-12 months after being erected. Blue stains come from fungi that flourish in cut logs that aren’t immediately taken to the mill. First important item to consider is moisture. If the structure is constructed from new materials, we recommend waiting long enough for the wood to dry out from the milling process before staining, because the ideal internal moisture content for exterior wood is 13 percent or less. The only way to be 100% positive that the moisture is 15% or lower is to use a moisture meter. I would like to apply the stain asap for both aesthetics and for the weather proofing, as the coming 8 month long winter hits -40 Celsius. Wood exceeding those levels needs time to dry. Wet wood is harder to burn because more energy is required by the fire to burn of the excess moisture before it can start to efficiently burn the wood. Knowing The Moisture Content Of Your Logs Is Critical Moisture Content And Log Construction/Stain Application If log finish is applied to logs that have an 18% and over moisture content, mold and mildew has fertile ground to grow beneath the surface of the log coating. The moisture content in the wood. The moisture content is at 15%. It will take your home a year to 18 months to acclimate to its new environment, so use a breathable stain that will allow moisture to escape, but never stain when the moisture content level is above 18%. The less dense the wood,the less it tends to shrink and swell in response to changes in moisture content.Cedar is a low density wood exhibiting excellent dimensional stability. Cleaning the logs of your cabin is always the first step before staining, treating or chinking your log cabin. Learning how to stain pressure treated wood can extend the life and improve the appearance of decks, fencing, picnic tables, retaining walls and other exterior wood projects.. Safety: Wear gloves when handling pressure treated wood. 4. Depending on the weather, you may have to wait a few days after cleaning your fence for the wood to dry. can … Yet it’s critical for woodworkers to assess wood moisture levels. Before treatment, the lumber (southern pine, in most cases) is typically dried to approximately 19% MC (moisture content). How does moisture content affect the life of the stain? On average most stain manufacturers are going to recommend that the deck's moisture content be anywhere from 12% to 15% or less. You could trap moisture, which could lead to a host of problems (rot being the worst). ft. of decking it will be dry enough, unless it has rained. Use a turkey baster to accurately measure amounts. Most PT wood is dry at to within 15%-12% of moisture content. However, if the wood is still wet after 3+ days, you need to; A) Immediately find a better lumber yard to buy from in future, and… B) Use a wood kiln to dry the lumber yourself. All you need to do with KDAT wood is wait 2-3 days before working on it. After a floor is water popped, and before a stain … Few woodworking topics generate as much confusion as the proper moisture content for wood to be used for a furniture project. Preparing the pallet wood before staining it will ensure proper application and a long-lasting stain.Use a tack cloth to remove dust as you sand the pallet wood.If the dust settles in the pores, it can lead to your stain looking uneven and blotchy. In dry wood, blue stain is structurally harmless and can be covered by primer, but spreading blue stain is an indication that the wood’s moisture content is exceeding 20 percent, and that is likely to lead to other problems. I was always under the impression that it is very important to wait for optimal 12 percent moisture content … Pattern of growth,or springwood and summerwood,is Just so, what should the moisture content of wood be before staining? If the moisture content of wood exceeds about 23%, it may begin to mold. The USDA Wood handbook, Chapter 12 , is a great resource for more information on drying wood, how properties change as lumber dries, and ways to protect lumber from moisture. Wait time can vary depending on sun exposure, weather, and temperatures. Part of the confusion is the continually expressed idea that wood should be allowed to “acclimate” to the shop before use. But if the wood is left out side at a lumberyard or home improvement store then there is no telling how much moisture is in the wood. Apply a wood conditioner to help the wood absorb stain evenly. Failure to check your delivered material means you have no chance of anticipating movement problems. Whether using KDAT or standard treated lumber, be sure the moisture content of the wood is below 15% before applying TWP stain. Use a moisture meter to determine how dry your fence is before applying any stain. Use a moisture meter to check the moisture levels before staining. After pressure-treating with chromated copper arsenate (CCA), the moisture content will be 75% or higher. From what I understand Precise Moisture Content is really only needed for building furniture & cabinetry or installing flooring & interior trimwork. why bother wasting money,just let the wood dry out,I stain my deck and fence every few years,as long as it has not rained in a few days,stain it. I pretty much only use TWP in … The moisture levels should be between 12-15% or less to start staining. For example, fresh cut trees can have a wood moisture content over 200%, while completely dried wood will have a wood moisture content of 0% and wood in buildings usually has a wood moisture content of 5% to 15%. Watch this video to learn how to clean your logs before you stain > D Weather conditions include cleaning, power washing, rain, snow, drizzle, and higher than normal humidity ratings. Water gets into wood in three ways: as a fluid through the cell lumens through capillary tension, as vapour through the cell lumens, and as molecular diffusion through the cell walls. Most stain manufacturers recommend that the moisture content of the wood be no more than 15%. Wood and Moisture Content. If the moisture content of the wood is too high, your new stain may peel prematurely and not adhere properly to the wood fence. Texture refers to the general coarseness of the wood surface,primarily caused by the sawing,planing or sanding process. Otherwise staining a deck that has much higher moisture content. 1. The only way to accurately predict wood movement is to know the MC of the material when you receive it. Keeping lumber mold-free is another good reason to dry lumber. Even after the waiting period and the proper prepping, new smooth wood is still not as absorbent as it will be in a few years. Moisture content of wood should be less than 12%. All new wood should be prepped with the Gemini Restore Kit before staining. Myth Number 2 – New wood is ready to be stained. Preparing bare wood for painting or staining correctly, is a must to ensure a beautiful long lasting finish. 3. Acceptable moisture content is between 15% and 18%, depending on the product, and can be determined by using a moisture meter. There are several measures to check the moisture content of your wooden deck. I've never measured the moisture content of anything & just wait a day or 2 for it to dry & not a single moisture content issue in decades. So I asked a friend about his experience staining his deck and he advised me to wait a year for it to dry before I stain to avoid any complications due to trapping moisture. 18%-19% moisture content is what you have with kiln-dried lumber, but not pressure-treated or green lumber that have not been kiln-dried. The climate and weather conditions in your area. Moisture content is measured using a moisture meter. Begin with a 50-to-50 solution of thinner and finish, wipe some on the wood, let it dry and and apply stain. The flooring must be allowed to dry before the finish application. Many people take this for granted. This initial drying removes the "free water" from the lumber, making room for the preservatives. If the stain color is too light or the stain doesn't penetrate, reduce the solids' content by adding more thinner. Even kiln-dried lumber will absorb high humidity. Wood is a hygroscopic, meaning it is a material that absorbs water. Pressure-treated wood contains preservatives to prevent rot and insect damage, but it remains vulnerable to the sun, wind, moisture and dirt. Take a reading before you start any work. In the July/August 2011 issue (Question & Answer), Andy Engel has reservations about waiting for the decking to dry out before staining. Whether the deck is in the sun or shade. The exception to this is wood that comes pre-treated with a wax finish or sealer. Stain that is applied to a damp, moist surface won't adhere well, and will crack or peel. Acceptable Moisture Content. 3. In that case you are going to need to follow the instructions by the company treating the wood. By the time you lay/screw off 1500 sq. Freshly cut wood can have a moisture content of anything over 20%, meaning that this ‘green’ wood is very high in moisture content and would struggle to burn on a fire. It looks gorgeous. If you’re installing wood that’s recently been transported or installed on a job, it might take a little while for the material to reach its equilibrium moisture content (EMC) with the air — in other words, for the wood to accommodate to the humidity level for the climate around the wood: the wood may take on more moisture or it may dry out. If you test moisture content, you can ensure that your paint will adhere to its surface before the paint is applied. Record the moisture content before water popping. Cleaning the logs of your cabin is always the First Time mass of the timber without water. 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