Well I have been building a garage at my house this summer. It is time for siding and I am looking for anyone knowledgable about painting and staining. I am going to be using pine shiplap installed vertically. I will be nailing the siding onto horizontal furring strips on the sheathing with spacers behind the strips to create and breathable rain screen to dry any moisture at makes its way around the siding. I will be using a solid red stain on the siding. My question is about covering of the backside of the siding. I know that it is highly advisable to finish all six sides so that the moisture diffusion is equal on all sides of the wood to keep from cupping. Since I am using a solid stain should I just straight stain all six sides or should I use a primer only on the backside and stain the rest?