Caulk is a ‘do-it-all’ material that finds its use in the building industry as an all-purpose sealant. It seals cracks and fills gaps in any joints. It can easily be used on any surface ranging from skylights, windowpanes, and plumbing fixtures, to tiles, concrete, sidings, and plaster walls. By the very nature of its functionality, caulk has to be durable, weatherproof, waterproof, and heatproof. A good caulking material is one that does not expand or contract with temperature, thus reducing chances of crack.

Before the 1970s, asbestos was mixed with various other products to make caulking material. Caulking material thus produced, was resistant to heat, and was most prevalent in places where a fireproof seal is needed, such as an oven or fireplace. Asbestos reinforced caulk was commonly used for sealing holes in service ducts, joints of pipes, brickwork, flue ceiling, and boilers.

Caulk containing asbestos is dangerous because the asbestos content in it is close to 100 percent. Before 1970, all kinds of asbestos was used in caulks. After 1970, the use of asbestos was restricted to Chrysotile. Chrysotile has one advantage over the other forms of asbestos - it is less friable because its individual fibers are longer and more malleable. Of the six varieties of asbestos, this is by far the least friable.

Asbestos-containing materials become harmful the moment they release fibers into the air. Sealed within walls, attics, or skylights, they pose little threat to you if they do not have the ability to release fiber.

However, when the bonding material is old or cracking, the fibers are exposed and are free to break away. Water damage, aging, physical impact, drilling, grinding, boring, cutting, sawing, or breaking can break down the caulking material, thus releasing fibers. Storing or handling large amounts of un-bonded material poses a major risk.

Evidence suggests that asbestos exposure can lead to several disorders of the lungs, pharynx, esophagus, kidney, stomach, and colon. Workers involved in renovation and reconstruction activities are at maximum risk. Residents and consumers who are exposed to renovation, repair, or demolition work are also vulnerable, particularly because they are unaware of the danger they are in.

Asbestos exposure can make you eligible for insurance claims, contact an asbestos law firm to learn more.