Quick Answer: How Long Will A Post Last In Concrete?

Does wood rot in concrete?

With concrete holding the moisture against the wood, wood has no chance and will eventually lose the battle.

Now you don’t have to lose all hope because it’s for certain that the concrete around the post will crack, therefore making it easy to pull out when it starts to rot.

Even worse, the concrete cracks early..

Can I pour concrete around deck posts?

A larger cross sectional area post will do that. Pouring concrete around the post, as long as the concrete is locked onto the post, will do the same.

Should I use 4×4 or 6×6 deck posts?

A short 4×4 can carry an awfully big load, and many deck builders use 6×6 posts as a standard, regardless of the height or load of the deck. … Multiplying that area by the expected load tells you the weight a post is expected to carry.

Are post spikes any good?

Since fence post spikes are topped with a box that secures the base of the fence post just above the ground, you instantly cut the odds of having rot problems. Good spikes hold wooden fence post bases securely with strong bolt-in systems, providing sturdy wind-resistant fencing that won’t sag or lean.

Should deck post be set in concrete?

There are several ways to set deck posts; we recommend attaching the posts to concrete footers above the ground. This helps to prevent wooden posts from rotting. Set footers a minimum of 6” below the frost line for your area to prevent movement during freezing temperatures.

How can I make pressure treated wood last longer?

The best way to protect from pressure treated wood rot is to apply a deck preservative. Like we mentioned earlier, stains, paints and sealants are the best choice to use. You can find these items easily at the local hardware store.

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.

How can I make a 4×4 post without concrete?

Procedure:Find a concrete surface and lightly tamp your digging iron against it. … Remove the turf and topsoil from the site of the post. … Dig the hole putting the displaced earth onto the tarp. … Pour 4 inches of gravel into the hole.Place the post in the hole. … Add another 2 inches of gravel around the base of the post.More items…•

Why is there a shortage of pressure treated lumber?

The coronavirus has caused a shortage of lumber and pressure-treated wood. Lumber mills in the U.S. slowed their production or stopped altogether during the pandemic, resulting in reduced supplies.

Can you put dry concrete in a post hole?

Fast-setting concrete is ideal for setting posts because there’s no mixing—you simply pour the dry concrete from the bag right into the hole, then add water. … Under normal curing conditions, you can apply heavy weight to the post (a basketball backboard, for example) after just 4 hours.

How many bags of concrete do I need for a post hole?

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 concrete?

Caulk around the fence post baseSoak the bottom of the posts in a wood preservative containing copper napthanate, such as Cuprinol. … Place about 6 in. … Pour the concrete so that it’s above the soil level.More items…

How long will a pressure treated post last in concrete?

5 to 10 years4 Answers. A PT post will last a long time in concrete, maybe 5 to 10 years in soil alone. I suggest you embed the post in concrete, trowel a peak around the post so water runs off, and don’t let the PT post come in contact with the ground.

What should I put between wood and concrete?

on top of a foundation wall, there is a barrier (in cold climates, that’s a thin foam called “sill seal”) that separates the concrete from the wood sill. the wood sill should be pressure treated to resist decay.

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 .

Do pressure treated posts rot in concrete?

A: Actually, your point is well taken. 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. … Concrete should be poured around the post – no concrete under the post.

Can I pour concrete against pressure treated wood?

Pressure-treated wood is required whenever you attach framing lumber or furring strips directly to concrete or other exterior masonry walls below grade. Note that this requirement is only for exterior walls, as these may wick moisture onto the lumber.