#tar consistency

[tarfyi]

Can Tar Go Bad?

Tar can go bad in the practical sense even if it does not rot like food. Bad storage can make it lumpy, contaminated, overly thick, skinned, separated, or unsuitable for the job. Tar is not a normal perishable material. Bacteria and mould are not usually the main issue in a sealed tin of tar. The more common problems are physical and chemical changes: evaporation of lighter parts, oxidation at…

[tarfyi]

How Tar Behaves In Cold Weather

In cold weather, tar usually becomes thicker, stiffer, slower to spread, slower to settle, and less able to flow into small surface cracks. Cold makes tar less mobile. A product that brushes easily on a warm day can become thick and reluctant in a cold workshop or shed. This happens because the heavy oily and resinous parts of the tar flow more slowly as temperature drops. Cold application can…