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how long should pine dry before building

by Taurean Kub Published 3 years ago Updated 2 years ago
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The traditional rule of thumb is to let the lumber air-dry for one year for each inch of thickness, but this is only a general rule and close monitoring of the lumber, especially with the help of a moisture meter, provides more flexibility.Aug 27, 2008

Full Answer

How long does it take for pine wood to dry?

Time required to dry pine is subjective to air flow and humidity. In a moist climate, green pine can take up to a year to dry to 19 percent. If you're drying milled pine for furniture, trim work or cabinets, the time required to bring it down to 12 percent can be as little as a few days or as long as a few weeks or more.

How long does it take for logs to dry before building?

You should seal the ends within minutes after being cut down; you should not wait hours, and definitely not days! The drying time will vary depending on the wood species and thickness of the logs, but they will take at least one to two years to dry – the longer you can leave them before you start building the better.

How long does wood need to dry before building furniture?

You should consider the project and for things that will be exposed to the weather or high humidity, wet wood is OK, just heavy to work with. Two years of drying would only be required if you are building fine furniture, and hopefully you're not using Pressure treated stuff for that.

Is your pine not dry enough?

If you're concerned that your pine may not be dry enough, there's a fool-proof way to test it. If it fails the test, employ drying techniques that bring the moisture down to an acceptable level.

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How can I make pine wood dry faster?

0:575:26How I Dry Wood Fast // Tips and Tricks - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd free fans blowing to maximize airflow and facilitate the drying. It is also good practice toMoreAnd free fans blowing to maximize airflow and facilitate the drying. It is also good practice to flip the wood every seven to ten days to help minimize warping as well.

How dry should wood be before building?

In order to be usable for a construction project, wood must be kiln or air-dried to a moisture level of 19%. But wood that is intended for indoor use— that is, wood intended to be used for woodworking— must have a moisture content level that is less than half that amount, at only 9%.

How long does pine need to cure?

The length of time it takes to cure pine depends on the season and local climate. A dry summer will cure pine more quickly than a humid one, but generally pine takes three to four weeks to cure between May and September in temperate areas.

How long does white pine take to air dry?

Table 1 displays average air-drying time for lumber of various species with one inch thickness....Table 1.HardwoodsBig leaf mapleDrying Time (Days)Drying Time (Days) 60-180SoftwoodsSoftwoods White pineDrying Time (Days)Drying Time (Days) 60-20011 more columns

Can you build with fresh cut lumber?

Building with green lumber for timber frame construction can save time, money and energy. With green timber, you can begin building right away without having to wait for the wood to dry, or having the added cost for kiln drying, which uses environmentally damaging fossil fuels during the drying process.

How do you know if wood is dry enough?

If you don't have a moisture meter, here's how to work out if your firewood is dry enough. FEEL the weight of the wood – drier wood is much lighter. THROW a small piece of firewood onto hot glowing coals – if it catches fire on the top and sides within one minute, it's dry.

How long can you leave pine logs sit before milling?

As a rule of thumb, there will be a measurable loss in four to six weeks of warm (over 50 F) weather. It is just a rule of thumb.

Does pine wood crack easily?

Because pine lumber has a low moisture content, its spaces fill with air as the wood dries out during seasoning. This makes the wood less dense and easier to split. It's why pine and other cone-bearing trees are considered softwood.

How do you dry rough cut pine?

0:343:34Wood Tips - Air Drying Fresh Cut Lumber - YouTubeYouTubeStart of suggested clipEnd of suggested clipBut. But airflow is key airflow air dried wood to dry air flow is absolute key so you've got a greatMoreBut. But airflow is key airflow air dried wood to dry air flow is absolute key so you've got a great-looking pile of wood here if coated your ends that. Helps. Keep the ends from checking.

How long does rough cut lumber need to dry?

Depending on the species and your climate, it can take from 2 to 12 months to bring 4/4 lumber from green to air-dry (12- to 20-percent moisture content, depending on your location). Air-dry isn't dry enough for indoor use. If you're planning to use the lumber for outdoor projects, airdrying outdoors is fine.

How can I dry wood fast without cracking it?

Lean the slice against a wall or prop it up on its side in a warm, well-ventilated location such as a garage, basement, or shed. Let it dry for up to a week so the solution can evaporate and the wood can dry without cracking.

How long should fresh cut lumber dry?

The traditional rule of thumb is to let the lumber air-dry for one year for each inch of thickness, but this is only a general rule and close monitoring of the lumber, especially with the help of a moisture meter, provides more flexibility.

How long should logs dry before sawing?

Depending on the thickness of the lumber and where you live, weather and time of the year, it will take anywhere from 6 weeks to 4 months. Most lumber is in the 1” to 2” thickness and the time above applies to thicknesses.

How do you get moisture out of wood?

Place a dehumidifier in the center of the room once all of the standing water is removed. Set it to the highest extraction setting possible. Turn it on and leave it running for at least 24 hours to pull moisture from the boards. Place fans blowing across the surface to further aid in drying the wood out.

How do you treat wood before bringing it inside?

Borax and Water Spray Mixing a little bit of borax and water and throwing it into a spray bottle is a great way to spray the wood for bugs. It will not only kill any insects that are currently living in the wood, but it will also prevent any new bugs from taking refuge in your reclaimed wood.

What happens when wood is dried too quickly?

This is the most critical stage of drying, and during this time surface checking will occur if the wood is dried too quickly (checking does not occur when wood is dried too slowly) and internal checking (honeycomb) will occur if the drying speed is so excessive that surface hardening occurs.

How long does it take for a 2" slab to dry?

Here at 53N in the magnificently mountainous Fraser River valley, that means that a 2" slab should be ready to work in a year. . . . bet on two years to be certain.

What is the safe drying rate for 8/4 lumber?

Drying rates are typically listed for 4/4 lumber, with 8/4 lumber having a safe drying rate being around .4 of the rate of 4/4.

How much moisture is needed for a drying process?

In general, you can divide the drying process into three stages. These are 1 – from green down to 35% moisture content, 2- from 35% MC down to 25% MC, and 3 – from 25% MC down to final MC (typically 6% - 8% for indoor projects and 14% or so for outdoor projects or framing lumber).

What are the two categories of drying related degrade?

Drying related degrade (damage) can be loosely divided into two categories – physical and aesthetic.

What are the factors that determine the drying rate of wood?

Each species of wood has a maximum safe daily drying rate, and this rate varies based upon three factors: 1 – the species of wood, 2 the thickness of the wood, and 3 – the moisture content of the wood.

Why do people air dry lumber?

One of the reasons that many experienced people who air dry like to harvest and mill their lumber in the fall and winter is because the cooler temperatures typically prevent the occurrence of aesthetic degrade, and by the time that summer arrives and the temperature rises, the wood has dried enough so that the surface MC% is below that required for the degrade to occur.

How much moisture does dry lumber give?

Since we are planning to use these resources, the idea is to air-dry the lumber until it will give up no more moisture without assistance, and then look at different ways to complete the drying process. Typically, you can achieve a moisture content of 10-15 percent by air-drying alone, although this will vary according to your local climate. Arid regions of the Southwest can easily achieve a moisture content of 8 percent by air-drying, whereas humid areas such as coastal Maine or Oregon will be at the other end of the spectrum. The goal for commercially dried lumber is 6-8 percent, but it isn't necessary to achieve that number with your lumber.

How long has lumber been dry?

The first thing you need to understand is humans have been successfully drying lumber for thousands of years, long before the advent of modern dry-kiln technology, which has really only been around on a broad scale for the last century or so.

When will it be dry?

Once the lumber is properly stickered and covered in a good location, all you have to do is let time and the elements work on your lumber, occasionally checking the piles for any sagging. The traditional rule of thumb is to let the lumber air-dry for one year for each inch of thickness, but this is only a general rule and close monitoring of the lumber, especially with the help of a moisture meter, provides more flexibility. If your heavier lumber is cut into squares and can dry evenly from all sides, you can definitely speed up the process, but wide thick planks will pretty much take the required time, and your local climate also will have an effect. I would recommend putting 4/4 and 6/4 lumber on sticks in the spring and leave it on sticks until the following fall. Then dismantle the piles after a spell of dry weather to minimize the moisture in the lumber.

How to air dry wood?

The most common method used to air-dry lumber is to lay narrow sticks perpendicular to the layers of lumber to create an air space between each layer so the moisture can escape. A good foundation is critical to successfully drying wood.

Why do we dry wood?

The object is to reduce the moisture content of your wood to the relative content of the climate where the wood will reside, while trying to keep the lumber from distorting, checking, honeycombing, etc. The good news is that, like solar and wind power, Mother Nature provides the means to accomplish the task using those two sources: temperature and air movement.

How many sticks do you need to dry 4/4 lumber?

If you are drying a thousand feet of 4/4 lumber and planning to use 1' centers, you will need 275 sticks for that lumber. If you have different stacks of lumber drying for various lengths of time, your needs will be in the thousands.

Why do I overhang a wood pile?

Lumber dries better in warmer conditions. The heat gets those water molecules up and dancing and easier to move off the wood, but direct sun can cause damage, especially in the height of summer. This is another reason for overhanging the tops. If I feel there is too much exposure to sun and wind, I might use a commercial screening like Shade-Dri attached to the sides of the pile to deflect some of the sun, wind and rain.

What are the benefits of kiln drying?

A benefit of kiln drying is that the process dries the wood quickly and also “sanitizes” your logs by killing fungi or insects.

Why do logs crack when dried?

There are a number of manufacturers that kiln dry their logs – this method can dry them so rapidly that when large diameter logs are dried , the moisture is forced out faster from the outside than the center and causes cracking (checking.)

How many logs will you need?

Before you even think about ordering logs, or felling trees, you need to know how many logs you will require.

Why cut logs in winter?

Cutting logs in the winter will also reduce the likelihood of cracking and splitting as the cooler temperatures allow for a slower drying time. The cold weather also minimalizes the likelihood of them becoming insect-infested and subject to both fungal growth and mildew.

Why do you need to fall a tree in the winter?

One of the benefits of felling a tree in the winter is that the ground is hard and icy making the logs easier to move.

How big should a log be?

Depending on your preference, your logs should be around eight to ten inches in diameter, with only minor tapering, for example in a sixteen foot long tree, the tapering should be no more than 2 inches.

How many trees should I cut down for a sandbox?

I would recommend cutting 3 or 4 extra trees down as a backup plan – in case some split or are infested.

Can you mill a log truck load of dead pine trees?

I just milled a log truck load of large diameter dead pine trees. The checks (cracks) killed the usable volume. Many nice boards with an angled check right up the board. You will get the best value and best recovery if you mill them sooner rather than later.

Can you use bright wood?

Many users can use bright wood (unstained). Some users will settle for stained lumber but they want a discount. Yes, there is a small group that think "denim pine" is special. I have milled thousands of board feet and find the variability in blue pine massacres its utility.

How does drying wood work in cold weather?

In cold weather, drying proceeds slowly but uniformly, thus allowing the wood elements to adjust themselves with the least amount of rupturing. In summer, drying proceeds rapidly and irregularly, so that material seasoned at that time is more likely to split and check.

Why does wood dries faster in summer than winter?

Wood dries more rapidly in summer than in winter, not because there is less moisture at one time than another, but because of the higher temperature in summer. This greater heat is often accompanied by low humidity, and conditions are favorable for the rapid removal of moisture from the exposed portions of wood. Wood dries by evaporation, and other things being equal, this will proceed much faster in hot weather than in cold.

Why is there less danger of sap rot when trees are felled in winter?

There is less danger of sap rot when trees are felled in winter because the fungus does not grow in the very cold weather, and the lumber has a chance to season to below the danger point before the fungus gets a chance to attack it. If the logs in each case could be cut into lumber immediately after felling and given exactly the same treatment, for example, kiln-dried, no difference due to the season of cutting would be noted."

When to buy logs that I spalt?

Logs that I spalt I try to buy the same time of year. I have found that buying logs in those two months produces the best product. Also trees with a left hand twist should be left for firewood.

What is the layer between bark and wood called?

These layers, called the cambium layer, make new cells on the outside that become bark and new cells on the inside that become wood.

What type of timber is used in Montana?

Here in Montana I have worked with both dry and fresh timbers, usually ponderosa pine or Douglas fir. I have found that the sooner the better - the joints only get tighter from shrinking.

Does sapwood respond to seasonal changes?

Sapwood might reasonably be expected to respond to seasonal changes, and to some extent it does. Just beneath the bark there is a thin layer of cells which during the growing season have not attained their greatest density. With the exception of this one annual ring, or portion of one, the density of the wood substance of the sapwood is nearly the same the year round. Slight variations may occur due to impregnation with sugar and starch in the winter and its dissolution in the growing season. The time of cutting can have no material effect on the inherent strength and other mechanical properties of wood except in the outermost annual ring of growth.

What is the best thing about penetrating stain?

Best thing about penetrating stain is that all you have to do is re-apply never have to scrape or worry about peeling etc.

Does green wood split?

In my experience, green wood tends to split less than seasoned or KD wood, so you should be good.

Can you split wood with two nails?

With two nails, the shrinkage will split the wood. It is also a good idea to have the side of the board that was toward the center of the log facing outward. If it tries to cup as it dries, the edges of the board press against the stringers. Think of it as the growth rings trying to straighten out as it dries.

Can you paint wet wood?

Well Hawk, wet wood will shrink and crack. So for board and batten style you would want to have your batten wide enough so when it shrinks it will cover the space between the boards. Also I would not paint I would use a penetrating stain only after the pine has dried one year, in the weather up here in the north. Just a thought!

How long does it take for wood to dry?

Unless you have a kiln to dry wood in, drying wood in a standard environment takes a really long time (if you buy firewood, usually you want ~2yr old wood!). I don't know that leaving it out for a couple weeks would dry it if it were so saturated that there is visible water coming out of it. It is recommended to let wood used for hardwoods sit a couple weeks to get accustomed to the environment as far as humidity goes, but it is not being dried any further.

How long does it take for furniture to dry?

Two years of drying would only be required if you are building fine furniture, and hopefully you're not using Pressure treated stuff for that. In building construction, there are times when you want to minimize the shrinkage (primarily in board width) so there are not excessive gaps.

How to ship PT lumber?

All PT lumber comes wet. They put it under pressure and force chemicals into it. Then they palletize it tightly so it won't warp in transit and ship it. I usually lay the boards out on a flat surface stacked up in criss cross layers with air space between each board. I put some cinder blocks on top to keep the top layers from warping. In the summer in Oklahoma they dry and shrink n a couple of weeks. I only do this on boards where I care about the appearance. If you put deck boards in wet you are supposed to put them on pushed completely t and then they will shrink about 1/4" in width. However when the shrink they tend to split along the grain where the screws are because the screws won't let the board shrink so it splits instead. If the deck boards do warp before installing you can use a couple of wedges to force them straight but it is a PITA.

How long should I store wood for warping?

If the project under consideration will suffer with that kind of gap, store the wood for a couple of months on a level surface using "stickers" to allow air flow. I have weighted and clamped stacks of wood in attempt to keep the warping to a minimum.

Can you dry treated wood?

Yes, let it dry. Working with wet treated wood is a very bad idea unless you like shrinkage, cracks, gaps, squeaks, etc. Let your framing and decking dry out first.

Can pressure treated wood be rained on?

Most likely you got wood that had sat out in the weather and been rained on. Since this is pressure-treated wood it will be fine.

Can pressure treated lumber split?

TheSean, you're actually working with that pressure-treated lumber in its IDEAL condition for working. After it dries, it'll become much much harder & more prone to splitting. Right now it's very resilient, and every fastener you drive into it "wet" will become tighter as the wood dries out.

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