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I was prepared to buy cob media 20/40 at $32. per 40lb bag for blasting however I was told that a local company was getting much better results from using Glass Oxide at $8. per 50lb bag. Should I cob or glass blast an original 1920's hand hewn cabin in NC, also the cabin has a chinking made up of a portland cement recipe.


You should be able to get the cob for about $10-$15 per bag. I'm not a big glass fan.

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Posted By Mark Hudon
My scandinavian scribed log home had pink insulation applied between the lobg during the erection process. The insulation was left untrimmed for 5 months and got sooked. I have since trimmed it all back and finished the building. I have natural gas forced air heating and all seems very dry. However, at 3 areas, about 14" long there is a very hard white fungus between the logs. It has not changed in the last 2 1/2 years and does not seem to be growing. Do I have a serious problem?