Asbestos in acoustic panels is a risk that particularly applies to public sector buildings, offices and industrial sites. Acoustic panels were widely installed in the 1960s-1980s on ceilings, partitions and sound insulation structures. Many of them were made of asbestos fiber or contained asbestos as a supporting material. Acoustic panels installed before 1994 must always be treated as possibly containing asbestos, and interior renovations require an asbestos survey before starting work.
What are acoustic panels and why did they contain asbestos
An acoustic panel is a sound insulation and decoration panel that is typically installed on the ceiling or walls to dampen the echo and improve room acoustics. Asbestos was added to the sheets because it improved fire resistance, strengthened the sheet structure and offered good sound-absorbing properties. Asbestos-containing acoustic panels were also inexpensive and easy to work with, which made them popular in large buildings.
Typical manufacturers and products
on the Finnish market asbestos in acoustic panels specifically related to the following products and manufacturers:
- Eternit, acoustic panels and ceiling panels, made of asbestos cement
- Paroc, old mineral fiber boards that may have contained asbestos
- Minerit, acoustic ceiling panels for public spaces
- Sprayed acoustic coatings, where asbestos was bound with an adhesive
- Perforated acoustic panels in the office ceilings
Not all ceiling tiles of this era contained asbestos, but visual differentiation is not possible. Certainty can only be obtained through laboratory analysis.
Typical locations and building types
Acoustic panels containing asbestos were especially installed in rooms where there was a lot of noise and fire safety was emphasized. Common locations include:
- Office false ceilings and conference rooms
- Schools classrooms, corridors and ballrooms
- Industrial halls ceilings and control rooms
- Office buildings and hospital partitions
- Business premises and store ceilings
- Sports halls and acoustic panels for swimming halls
In buildings of the 1960–1980 category in the public sector, there are often hundreds of square meters of acoustic panels in one location, which makes them a large survey and demolition site.
Risks in connection with renovation and demolition
An acoustic plate in place without damage usually does not cause significant exposure. The risk arises when boards are drilled, sawed, sanded or dismantled. Fixing screws and shocks during installation cause a small fiber emission, but the actual dismantling releases significantly more into the air. The fibers floating in the air land on furniture, textiles and ventilation ducts, from which they can re-emerge into the air long after removal.
Survey before interior renovation
Finnish legislation requires an asbestos survey before all repair and removal work on premises built before 1994. Replacement of acoustic panels, demolition of the false ceiling, partition changes and ventilation repairs are always included in this. The surveyor takes samples from different board types and the laboratory confirms the asbestos content. Based on the report, the contractor plans the work, bid price and schedule correctly.
If you plan to renovate the interior of your office, school or business property and the building is from the 1960–1980s, order an asbestos survey before the start of the renovation. In this way, you ensure safe working conditions, compliance with the law, and avoid costly contamination that occurs afterwards.