How to repair decking

If during your annual inspection you find that you have a problem the first thing to do is identify the issue and rectify it. Below are some situations that you may encounter.

An area of your deck has sunk.
This can be for a variety of reasons but the most likely is to be a problem with the joist underneath the decking or one of the posts that the joists are connected to.

Firstly, you need to remove a couple of boards in the area where the problem has occurred and see what has caused the problem. If the post has sunk but otherwise appears in good condition it may be possible to put some additional concrete around the post to prevent it sinking further and attach the joist further up the post to restore the deck to its original level.

Another issue may be that some of the joints have worked loose, or screws have come out or were not fixed properly. In this case it may also be possible to reaffix the joist in the correct position.

Rot.
You may experience the issue above or you may have a deck plank that is spongy and can easily break. In this instance one of the problems could be rot. Generally, this would only happen if your wood had been untreated or incorrectly covered. In this instance you will need identify any causes (for instance a water leak or a place where water is gathering without dispersing). You will need to work out a way to ensure that the water does not continue to collect here. Either by digging a drain away if it is below the deck level or possibly installing a gully for water to drain into if it is on the decking level.

Once you have established the cause and rectified this then you will need to replace the wood. This may involve removing decking boards if the joist needs replacing. If it is a post, it may be easier to put new posts either side of the one that needs replacing. Doing this may save the need to remove a large area of decking to replace one post.

Woodworm.
Generally, woodworm tends to prefer dry wood and typically is more often found inside rather than outside. However, in the rare event you have an outbreak of woodworm in your decking boards or your joists it is recommended that you identify the area that needs treating. You should identify which type of parasite is affecting your wood by using online guides and then purchasing the correct treatment for that woodworm online. If the boards and joists are generally still solid you may just need to treat these however if any have become brittle these should be removed and replaced.

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