Cleaning and Resealing Sisson ‘D’ Tongue and Groove Pine Logs

I have just bought a small 800 sq ft log cabin in the north georgia mountains. It was built in 2004 using sisson ‘d’ tongue and grove pine logs. the logs are in good shape but need a good cleaning. can i pressuse wash the logs. is there a cleaner that I should spray on first. i probably will need to reseal logs in the next year or so. thanks