How often should a house need to be cob blasted?
There is no exact answer to this question. If a house is properly cared for and maintained and finish is applied as directed, blasting should not be needed for many, many years. Unfortunately, finishes do sometimes fail. Whether the finish itself is poorly manufactured or whether it is applied inappropriately or at the wrong time. Any of these factors can cause a finish to fail on a log home. Once a finish begins to fail, the only way to really fix the problem is to take the logs back down to bare wood and start over again.
