Dry Ice Blasting

Utilizing dry-ice blasting technology does not alter the mould-cleaning process very much. Take the example of a second floor residence with no attic and having drywall on walls and ceiling being infested with mold. First, the second floor needs to be isolated from the first floor. Next, negative pressure needs to be created using a HEPA-filtered air scrubber. If there is any severely damaged carpeting and drywall, it should be double bagged and discarded. For the sake of this example, we will say that one half of the ceiling and all exterior wall drywall needed to be stripped and removed.

At this point, dry-ice blasting can be utilized to clean the plywood and support beams. The blasting gun can easily be managed to target the desired mark. Specific nozzle types best suited for cleaning wood can be utilized, e.g. a fan-shaped nozzle, creating a pattern several inches wide, can be used to “sweep” up and down boards and beams. The dry ice being fired on the wood can typically remove mold in a way that is clearly visible and in a methodical manner. Once the blasting phase is complete and all surfaces have been vacuumed and cleared of sawdust and other debris, mold remediators should follow up by applying an antimicrobial spray to re-mediated areas to inhibit future growth.

“Dry ice blasting is similar to sand blasting, plastic bead blasting, or soda blasting where a medium is accelerated in a pressurized air stream to impact a surface to be cleaned or prepared. But that’s where the similarity ends. Instead of using hard abrasive media to grind on a surface (and damage it), dry ice blasting uses soft dry ice, accelerated at supersonic speeds, and creates mini-explosions on the surface to lift the undesirable item off the underlying substrate.

Dry ice blasting has many unique and superior benefits over traditional blasting media.

Dry ice blasting:

• Is a non-abrasive, nonflammable and nonconductive cleaning method
• is environmentally-friendly and contains no secondary contaminants such as solvents or grit media
• Is clean and approved for use in the food industry
• Allows most items to be cleaned in place without time-consuming disassembly
• Can be used without damaging active electrical or mechanical parts or creating fire hazards
• Can be used to remove production residues, release agents, contaminants, paints, oils and biofilms
• Can be as gentle as dusting smoke damage from books or as aggressive as removing weld slag from tooling
• Can be used for many general cleaning applications

Dry ice blasting uses compressed air to accelerate frozen carbon dioxide (CO2) “dry ice” pellets to a high velocity. Pellets are made from food grade carbon dioxide that has been specifically approved by the FDA, the EPA and the USDA.”

The information above was extracted from the Cold Jet LLC website -
(http://www.coldjet.com/en/information/what-is-dry-ice-blasting.php)

For more information regarding CO2 Dry Ice Blasting and its environmental benefits please visit http://www.coldjet.com/en/environmental/facts.php

For more information regarding various industries and applications where CO2 Dry Ice Blasting can be utilized please visit http://www.coldjet.com/en/environmental/facts.php

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