What Excel tests

Renovation, repair, demolition, or maintenance work brings existing materials into question, and appearance alone cannot confirm what they contain.

Older or deteriorating painted surfaces often raise questions before repainting, repair, or other work that would disturb them.

A leak, water intrusion, or growth on a surface prompts a closer look at the specific area and the moisture behind it.

An affected area may need conditions documented before work begins, and clearance information once that work has been completed.

An occupied space develops an air-related or ventilation-related concern and needs data about the conditions in that space.