Wanting to update and repaint the timber railing around our upper balcony and the railing and decking on the small one. Have never done anything like this before. Obviously they all need a solid clean down but then I’m unsure if I need to sand and paint with a primer first or if there’s one product that will cover that. The existing paint is in good condition ie not peeling or lifting. Planning a dark heritage style blue on the railings but wanted to use a different colour for the decking. Unsure if there’s one product that will work for both or if I need a different product for the decking. All advice welcome. Not wanting to sand back and stain/oil the decking. Pics attached and can take more if it’s helpful

