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It is not so rare to see bubbles appear on epoxy coating. Bubbles are usually observed to be the size of a pinhead or more than an inch in diameter. You can find them in groups or scaterred around the floor. A phenomenon calle “out gassin” is what causes this. When the epoxy paint starts [...]

During the 19th and early 20th century lead was widely used in major U.S. cities for water pipes because of its durability and malleability. Lead pipes were eventually superseded by galvanized steel and copper, and copper pipe became the predominant material selected for domestic water service and distribution in post-World War II residential construction.