Among the list of the most important jobs to be done at the beginning of the season, there is always the maintenance of the hull at the top.
Every year it is always the same story: before launch, the hull must be redone by removing the old antifouling layer and applying a new one.
However, the time comes when it is necessary to carry out total restoration work on the hull, removing all the layers of antifouling that have been applied over the years and which negatively affect the consumption and performance of the boat.
For very performing boats – both motor and sailing – the zero treatment must be performed with greater frequency since the finish of the hull affects performance.
It is advisable to bring the hull back to zero also to be able to check for any structural damage to the hull or to check for osmosis.
The evaluation of the timing of how often to do this job depends on the number of overlapping antifouling layers, how the hull was treated before the periodic annual refurbishment, and/or if you decide to use a completely different antifouling product.
Warning: Always remember that removing all the antifouling is a very accurate operation, it is important to leave the boat in professional hands. It is about performance and safety in navigation.
From a practical point of view, the steps to restore the hull are as follows:
– Thoroughly clean the hull: this operation is carried out using a hydro cleaner, useful for removing the layers of vegetation and dog teeth formed during the period in the water.
– Remove the layers of antifouling: depending on the condition of the hull, a mechanical (with a sander) or chemical (with the use of a paint remover) method can be used to remove the antifouling residues layers deposited over the years. It will be the professional in charge of the work to evaluate the correct technique.
– Prepare the substrate: antifouling paints need a surface to “cling” to, so a primer must first be applied. Usually, two or three coats of the product are passed.
– Apply the new antifouling: at this point, the hull is ready for the new antifouling, which will prevent the formation of organisms on the hull.
Now the hull will be like new, ready to sail under the best conditions.
For an evaluation of the condition of your hull and for a quote: