Widespread moisture is a major warning
Localized verified wet areas may be repairable, but broad saturation, trapped moisture, or inaccessible wet layers can make coating an inappropriate way to defer necessary replacement.
Substrate and attachment must be sound
Loose membrane, unstable insulation, failing deck, severe delamination, incompatible existing coatings, chronic blistering, or poor adhesion can prevent a durable restoration.
Details and drainage must be correctable
Persistent ponding, failed edge conditions, deteriorated flashings, incompatible penetrations, and recurring leak pathways may require more than surface coating.
Practical owner checklist
- Verify moisture extent before approving restoration.
- Test adhesion and substrate compatibility.
- Confirm details and drainage are repairable.
- Reject restoration where the assembly cannot provide a stable base.
Frequently asked questions
Can primer fix poor adhesion?
Primer can improve compatibility on suitable substrates, but it cannot make unstable or contaminated material structurally sound.
Can coating solve ponding water?
Some systems tolerate limited ponding better than others, but drainage problems should be evaluated and corrected where practical rather than hidden.