On my travels today I passed this building. Do you notice the off color between the windows? If you don't, stay out of the brick business. Just kidding. Everytime I have encountered a brick complaint like this job, I spend half the time convincing the customer that nothing is wrong with the brick, the problem is with the mortar. This is a great example showing this situation. Mortar accounts for roughly 18% of the color your brain receives from the building. Mortar colors change from several reasons. One reason could be the quality of the mortar. A couple of other reasons could stem from the manufacturing process, wrong bags, changed the process, different person mixing the batches..... Things on the job that could change mortar color are, Initial rate of absorption (IRA) of the brick, change of people who mix the mortar on job site, strike mortar too soon, strike mortar too late. These factors could change the color of the mortar drastically. There are ways to tell which of these cardinal sins have been violated.
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