Does the Plaster in Walls Made Before 1975 Contain Asbestos? UK Construction Concerns Explained

In the UK, construction materials such as plaster used in walls before 1975 were highly likely to contain asbestos. Asbestos was widely utilized in various building materials, including plaster, due to its remarkable fire-resistant and durable properties. The extensive use of asbestos in building materials gradually ceased when the UK implemented a complete ban in 1999.

What Kinds of Plaster Contained Asbestos?

Before 1975, plaster used in walls in the UK often included asbestos as a key ingredient. The mineral was favored for its insulating and fireproof qualities, making it an ideal choice for building materials. However, the risks associated with asbestos led to a gradual phase-out of its usage. This phase-out reached its culmination in 1999 when the UK banned the use of asbestos in all building materials.

Common Plaster Types

In pre-1975 UK construction, plaster typically consisted of either gypsum, cement, or lime. Common forms of plaster included:

Gypsum Plaster: Comprised of gypsum and water, gypsum plaster was popular due to its easy application and drying capabilities. Cement Plaster: Made of cement, sand, and water, cement plaster was known for its strength and durability. Lime Plaster: Seasoned for centuries, lime plaster was valued for its breathability and ability to adjust to humidity changes.

Artex and Asbestos Concerns

Artex, a textured coating applied to render walls, was a popular feature in many homes, particularly in the 1970s and 1980s. While Artex itself is not plaster, it often posed asbestos risks if used over walls that contained asbestos-containing materials. Sanding or disturbing Artex layers can release asbestos fibers into the air, posing a significant health hazard.

Assessing and Testing for Asbestos

If you suspect that your walls may contain asbestos, it is highly advisable to have them professionally tested by a qualified expert. Asbestos testing involves collecting samples from the suspected material, which are then analyzed in a laboratory. This process helps to identify the presence and type of asbestos, enabling you to take appropriate safety measures.

Common Misconceptions About Asbestos in Plaster

Several misconceptions exist regarding asbestos in plaster:

General Plaster: Regular plaster, made of sand and cement or gypsum, rarely contained asbestos. The misconception likely arises from confusion with specialized products like Artex or textured finishes that might have contained asbestos. Older Plaster with Horsehair: Some older plaster mixes included horsehair to improve strength and durability. However, this type of plaster is not a significant risk for asbestos exposure, as the risk was more associated with occupational exposure long before 1975. Artex: Although Artex itself is not plaster, it often overlaid walls that contained asbestos. Thus, sanding or disturbing Artex layers can lead to the release of asbestos fibers.

To ensure the safety of your home and family, it is crucial to be aware of these facts and take the appropriate steps if you suspect the presence of asbestos. Consulting with a professional testing service can provide you with the necessary information to make informed decisions and maintain a safe living environment.