There are a couple of things that come into play when guessing the time that wood would take to rot.  First, the wood should be submerged in water for a while to produce results. Second, it depends on which type of wood are you talking about. The chemical makeup of each type would have an effect on how long will it take to rot or if it will be able to resist rotting altogether.

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The Type of the wood

Oak is known for its sturdy nature making it a very popular choice for constructions that would need long-term use. Oak is particularly strong when in contact with water. A lot of the time, these are used in shipbuilding and construction of bridges because they can endure harsh conditions.

Another fact about oak is that it is full of tannin which helps protect the wood from decaying easily. It might take up to six months for the oak wood to rot.

Is the wood treated?

There are a lot of ways to protect the wood from rotting. The most common is the use of paint, varnish, and stain. If you were to take a very moist wood and then coat it in varnish or paint, it would be able to delay rot for quite some time. Treated oak can take up to six months to rot

Is the wood submerged in water?

A lot of materials can resist rotting when it is untouched by water. However, wood that has been submerged underwater for long periods of time will start to break down after just a few months. The rate at which the wood decays would depend on the type of wood and if it has any chemicals used in protecting it.

For untreated oak, it might take up to six months for it to rot. A treated oak can last for two years of being submerged in water before the structure starts to wear down.

Different factors affect the rate at which wood rots, but these are some of the most common that you have to consider when estimating how long will it take before a certain piece of wood rot.

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