Photograph cracks, deposits, drains and change over time.
V16 — system diagnostic
Pyrite, pyrrhotite and iron ochre
Distinguish fill swelling, concrete deterioration and drainage clogging before choosing a repair.
Checked: 2026-08-22
Pyrite, pyrrhotite and iron ochre are different mechanisms; diagnosis should not rely on appearance alone.
Structural cracking, deteriorating concrete, major heave or repeatedly clogged drainage: expert/laboratory assessment.
Useful tools / data
- Dated photos and simple gauges
- Lab/expert reports
- Drain/sump history
What the professional checks
- Sample/identify material where required
- Separate structural and drainage mechanisms
- Define replacement, maintenance or monitoring
Sources and limits
Requirements depend on location, building, product and scope. RenoAtlas helps prepare the decision; it does not replace required analysis, permits, laboratory work or professionals.
Explore: Building interfaces to diagnose before enclosure or replacement
Building interfaces to diagnose before enclosure or replacement
These tools connect structure, water, air, frost, wind and mechanical systems so repairs do not hide the cause.