Older cement-based siding, panels, boards, and transite products may contain asbestos. These materials can appear durable, but cutting, drilling, breaking, or demolition can create dust.
Where are asbestos cement products found?
They may be used as exterior siding, wall panels, soffits, roofing components, utility panels, flues, pipes, and other durable building products.
When should exterior materials be tested?
- Before siding replacement
- Before drilling for windows, doors, or attachments
- Before demolition or storm repair
- Before cutting panels or boards
- When broken pieces are discovered
Why does condition matter?
Intact cement products may release less dust than damaged or mechanically altered material. The work method and planned disturbance remain important.
What happens if the material tests positive?
The contractor can plan appropriate handling, removal boundaries, waste management, and sequencing before exterior work proceeds.
Frequently asked questions
Can asbestos siding remain on a building?
Intact material may sometimes remain when it will not be disturbed. The decision depends on condition and the planned project.
Is pressure washing suspect siding a concern?
Aggressive cleaning can damage older surfaces. Evaluate suspect material before abrasive or high-impact work.
Does every cement board contain asbestos?
No. Laboratory testing is required to confirm the sampled product.