How to Check For Asbestos In Plaster

Asbestos was once a common material used in construction due to its durability and fire-resistant properties. However, it is now known that asbestos poses serious health risks when its fibres become airborne and are inhaled. One common area where asbestos can be found is in plaster. If you suspect that your home might contain asbestos in its plaster, it's important to know how to check for it safely. In this guide, we’ll walk you through the steps to identify asbestos in plaster, based on information from SCH Environmental Surveys.

Understanding Asbestos in Plaster

Asbestos was used in plaster for its fire-resistant qualities and to improve its strength. Plaster containing asbestos can be found in homes built before the 1980s, particularly in older buildings where the material was used extensively. The primary types of asbestos used in plaster are chrysotile (white asbestos), amosite (brown asbestos), and crocidolite (blue asbestos).

Signs That Plaster May Contain Asbestos

Before you start any testing, it's important to know the signs that might indicate the presence of asbestos in plaster:

  • Age of the Building: Homes built before the 1980s are more likely to contain asbestos in their plaster.

  • Appearance of the Plaster: Asbestos-containing plaster may have a rough texture and could look different from modern plaster. It might also have a fibrous or grainy appearance.

  • Disturbed Areas: If plaster is damaged or disturbed, there is a higher risk that asbestos fibres could be released into the air.

Steps to Check for Asbestos in Plaster

  • Do Not Disturb: If you suspect that plaster may contain asbestos, avoid disturbing it. Damaged or disturbed plaster can release harmful asbestos fibres into the air.

  • Conduct Visual Inspections: Look for any signs of wear, damage, or deterioration in the plaster. Note areas that might be at risk of containing asbestos.

  • Professional Testing: The safest and most reliable method to determine if plaster contains asbestos is to hire a professional asbestos surveyor. They can take samples and have them analysed in a laboratory. Here's a general overview of the process:

    • Sample Collection: A certified professional will carefully take a small sample of the plaster using proper safety equipment and procedures.
    • Laboratory Analysis: The sample is sent to a laboratory where it is analysed using microscopy techniques, such as polarised light microscopy (PLM) or transmission electron microscopy (TEM), to identify the presence of asbestos fibres.

  • Do-It-Yourself Testing Kits: While there are DIY testing kits available, they are not always reliable and can pose risks if not used correctly. For safety and accuracy, it’s best to rely on professionals.

  • Asbestos Management: If asbestos is found, it is crucial to follow proper management and removal procedures. Disturbing or removing asbestos-containing materials without proper precautions can be dangerous. Professionals will recommend appropriate actions, which might include encapsulation or removal by asbestos abatement contractors.

Safety Precautions

  • Avoid Dust: Do not attempt to clean or repair plaster that might contain asbestos. This can release fibres into the air.

  • Use Personal Protective Equipment (PPE): If you must handle plaster that may contain asbestos, wear appropriate PPE, including a mask with a HEPA filter and protective clothing.

  • Follow Regulations: Adhere to local regulations regarding asbestos management and disposal.

Checking for asbestos in plaster requires careful consideration and proper procedures to ensure safety. If you suspect that your home contains asbestos, it is best to consult with a professional to conduct a thorough inspection and testing. Taking these precautions can help protect your health and ensure that any asbestos-related risks are managed safely.

For more detailed information, you can refer to resources from reputable organisations like SCH Environmental Surveys, who offer extensive insights into managing and surveying asbestos in various materials.

Remember, dealing with asbestos can be hazardous, so always prioritise safety and seek professional help when needed.