I have a cedar log home. Curently there is a semi-transparent and I believe a light solid over that. I would like to sand, but it is taking for ever. If I sandblast do I need to sand afterwards and is the post sanding very time consuming? Is sikkens semi-transparent reccomended for stain? I have also buit an extension and the logs I used were srtipped and they have been up for two years now. Do I need to sand or can I apply the stain directly?