How Long Will A Treated Fence Post Last In The Ground?

Is 2 feet deep enough for fence posts?

The minimum depth that you should dig your fence post holes for panel sections is 2 feet.

A general formula is to dig the holes one-third to one-half of the post’s aboveground height.

The deeper you dig the holes, the more stability your fence has, but you must also purchase longer posts..

Should I use 4×4 or 6×6 fence posts?

6×6 is overkill for sturdiness. 4×4 is the standard. And if you do it as a privacy fence, 6×6 posts stand out and make it look more substantial.

What is the difference between #1 and #2 pressure treated wood?

Typically wood that is two or more inches thick is graded only for strength, denoted by #1, #2 and so on. And because stronger lumber has fewer and smaller knots, it’s typically more attractive. So the general rule of thumb for lumber grades is this: the lower the number, the more strength and better appearance.

How long will pressure treated wood last outside?

40 yearsPressure-treated lumber is ideal for outdoor construction as it has a long, useful life span and is much less expensive than alternatives. Treated wood can last more than 40 years.

Do fence posts rot in concrete?

Simply setting the posts in concrete does create a condition that will accelerate rot in the bottom of the posts. With pressure-treated posts, the rot will be slow. … This allows any moisture that gets between the concrete and the bottom of the post to percolate through the gravel and away from the bottom of the post.

Is it better to stain or paint pressure treated wood?

Because of the pressure-treating process, exterior paint is less likely to adhere to pressure treated wood and more likely to peel. Some experts advise staining or sealing over painting, but paint can be successfully applied by following extra precautions.

How many bags of concrete do I need for a 4×4 fence post?

Mix two 50lb bags of concrete with water in a mixing tub or 5-gallon bucket. Add concrete into the hole and around the 4” x 4”. Depending on your climate, let concrete set up for 24 – 48 hours.

How do you keep fence posts from rotting in the ground?

Tamp down the gravel. You can use concrete, if desired, but the moisture in the concrete can sometimes cause wooden posts to rot more quickly, while the gravel allows water to drain quickly away from the fence post and into the soil.

Will pressure treated wood rot if buried?

Pressure-Treated Wood Makes the Grade Pressure-treated wood in contact with the ground needs the most protection, and will rot in just a few years if you use the wrong grade. … If your wood will touch the ground or be buried, you should get the highest grade you can, up to .

How do you protect wood from dirt?

One way to protect wood is to use a wood preservative, which forms a tough barrier to for moisture and rot to break down over an extended period. You can apply wood preservative using a paint brush, use a solid insect repellant like creosote or weather sealer.

Should I use concrete for fence posts?

Concrete is the most secure material for setting fence posts, especially if you have sandy soil. … Using premixed concrete rather than dry concrete will ensure ultimate security. While concrete is sturdy, it lacks the drainage of gravel and can trap moisture, ultimately leading to rot.

Can you burn 20 year old treated wood?

Homeowners should never burn any type of pressure- treated wood or preservative-treated wood under any circumstances. The chemicals that are in the most common pressure-treated wood are heavy metals: chromium, copper, and arsenic. Those 3 chemicals may become airborne.

What lasts longer pressure treated or redwood?

Pressure treated wood is excellent, especially on your outdoor wooden structures. This product is not as expensive as the redwood and can last more than 40 years if you can accord it proper and constant maintenance.

How do you protect a wooden post from rotting in the ground?

Treat the Post With Preservatives Soak the bottom of the posts in a wood preservative containing copper napthanate, such as Cuprinol. Note: Available at some paint stores and home centers, this wood treatment is specifically designed for in-ground applications.

Why deck posts should not be set in concrete?

A deck post should always be placed on top of footing, not inside concrete because it can break. … Concrete tends to absorb moisture and wood expands when it gets wet, so these two factors combined will result in the wood breaking the concrete.

How long will 4×4 post last in the ground?

If you find the RV posts I mentioned earlier, they are steel, treated and when put in concrete will last 25 years or more. It will not last long (7 yrs max) if the bottom of the post is wet. If you place stone at the base of the post, it should last 20+ yrs.

How deep should a post be buried?

Dig post hole so diameter of the hole is 3 times the width of the post (i.e., the hole for a 4” wood post should be about 12 inches wide). The depth of the hole should be 1/3-1/2 the post height above ground (i.e., a 6-foot tall fence would require a hole depth of at least 2 feet).

How long do fence posts last in concrete?

around 20 yearsAnother thing to note, damaged fence posts can bring health and safety risks to your outdoor space – a rotting fence won’t stand for long in strong winds, so consider this when deciding on your new fence. Concrete is a durable building material and can last for around 20 years with minimal maintenance.

How long will pressure treated posts last in the ground?

3) A deck built with pressure treated wood will last a long time. Promotional literature promises lifelong performance for pressure treated wood. The Forest Products Laboratory and other research groups have shown that treated wood stakes placed in the ground for more than 40 years remain rot-free.

Why do fence posts rot at ground level?

Fence posts rot where the post exits the soil. … of soil contains millions of microbes. The soil builds up around the base of the post and acts like a sponge to retain moisture. The moisture and soil is fuel for fungi and the oxygen fuels the rot.

Can pressure treated wood sit on the ground?

Pressure-treated wood is softwood lumber, typically southern yellow pine, that’s been chemically treated to resist rot, decay and termites. Lumber treated to “Ground Contact” has a high chemical retention level and can be placed directly on or in the ground with better protection against rot or decay.