We have a new scribed log home [white pine] that we are trying to stain the exterior. Because of discoloration, we had it cob blasted. Do we have to sand before staining? It is somewhat rough after the cob blasting. Do most people sand too and are there advantages in doing this?
waterloop Changed status to publish April 2, 2024
Depends on what you want to end up with. If you want a smooth glossy finish you will have to sand it. I will tell you that the stain will hold up better on the corn cob blasted surface since the wood fiber has been raised and gives the stain better adhesion, but it will be more of a ”matte” finish.