Structural protection · Asbestos in sprayed protection
Can old sprayed fire protection on structural steel contain asbestos?
Yes. Sprayed coatings applied to steel between roughly the 1930s and the 1970s were often asbestos-based, and fire protection of beams and columns was one of their main uses. Appearance alone cannot tell you. Because sprayed coatings are friable, the safest assumption on a building of that era is that the material is asbestos until an assessment says otherwise.
What changes the answer
- building age and construction date
- whether an asbestos register exists and what it records
- any previous survey or sampling
- whether the protection has been replaced or overcoated since
- the condition of the material and whether it has been disturbed
- what work is proposed near it.
What to check on site
- Check the building's asbestos register. Look at construction records and any refurbishment documentation. Photograph the condition from a distance, without contact. Note where the material is damaged, delaminating, or has been disturbed by other trades.
- Do not scrape, sand, drill, brush or take a sample. Do not have anyone patch it, paint over it, or fix services through it. Do not run work nearby that could disturb it before the material status is settled.
What to do next
Resolve the material question through the appropriate assessment process, then plan the fire-protection scope around the outcome. They are two pieces of work with separate requirements, and trying to run them as one job is where these projects come unstuck.
General information only. A conclusion about a specific condition requires the actual construction, the evidence behind it and the site condition to be reviewed.