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Both pressure washing and painting can be effective ways to improve the appearance of wood siding. However, they have different benefits and drawbacks, so it's important to choose the right option for your client's needs.
Pressure washing can remove dirt, mildew, and mold from the siding, which can make it look newer and cleaner. It can also remove old paint, which can be helpful if you want to change the color of the siding. However, pressure washing can also damage the siding if it is not done properly. It is important to use a low pressure setting and to avoid spraying the siding too close.
Painting can also improve the appearance of wood siding, and it can also provide a layer of protection from the elements. However, painting can be more expensive than pressure washing, and it is important to choose the right type of paint for the siding. If the siding is in good condition, you may be able to get away with a single coat of paint. However, if the siding is damaged, you may need to apply multiple coats.
Ultimately, the best way to improve the appearance of wood siding depends on the specific needs of the client. If the siding is in good condition and the client simply wants to freshen it up, pressure washing may be a good option. However, if the siding is damaged or the client wants to change the color, painting may be a better option.