Describe the source
Tell us what happened, where the concern appears and what has already been tried. Restrict access to suspected contamination and avoid mixing household chemicals or disturbing unknown material.
Clarify specialist requirements
The material, contamination and setting determine protective measures, handling and disposal needs. Some work calls for qualified specialist services; confirm those arrangements and the scope before treatment.
Connect cleaning and restoration
Where porous materials are damaged, removal or replacement may be more appropriate than repeated surface treatment. Discuss any building repairs and the conditions required before restoring finishes.