Log Home Restoration – The Facts About Media Blasting

Media blasting is accepted as a means of removing coatings from almost any surface. In log home restoration, it works well at removing old stains and finishes to prepare the wood for a new sealer. Like any tool, it has its place but sometimes is overused.

Media Blasting or Abrasive Blasting is the process of using compressed air to propel abrasive particles from a blast machine or blasting pot, through a hose, and onto a surface at a high rate of speed in a way as to remove the existing coating and to be an effective cleaning treatment. Media Blasting for surface preparation removes unwanted coatings and leaves a clean surface ready for re-coating or other types of finishing.

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refinished logs and log home chinking

Used in log home restoration, many contractors use it to remove any type of coating, oil, or latex or just for cleaning to remove grayed-out wood, dirt and mildew. Because of the nature of the process, it is more expensive than the basic chemical strip and requires some specialized equipment.

An industrial type air compressor capable of producing at least 185 cubic feet per minute of air volume must be used. Some contractors own their own, but most rent one as needed. Also a special "blasting pot" designed to dispense crushed glass, baking soda, and ground corn cob media is used. It is similar to a sandblaster but modified to handle different media. Along with this special equipment, several thousand pounds of the media itself is needed. Three to four thousand pounds is not unusual.