Bricks, Masonry, Asphalt and Concrete - Cleaning brick

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03-30-01, 08:38 AM
We have an older home - built in the 40's. It has accumulated a blackish layer over the outside red brick - I am assuming from dirt, pollution, and other time related stains. What can I use to safely clean it?

2000
03-30-01, 10:01 PM
Diedrich Technologies is a leading supplier of masonry cleaning and restoration chemicals. Toll free 1-800-323-3565. Web Diedrich (http://www.execpc.com/~diedtech/) See: 101G

Other cleaners can be purchased at a masonry yard.

An old formula:
1 part vinegar
1 part ammonia (strong fumes)
1 part borax
Remember: always wet masonry before applying any cleaner and always do a test patch.