Note dark patches, salts, peeling old coatings, water after rain and plumbing leaks. These signs justify investigation, but none alone measures vapor emission through the slab.
Look for warning signs
Note dark patches, salts, peeling old coatings, water after rain and plumbing leaks. These signs justify investigation, but none alone measures vapor emission through the slab.
Ask about testing
A qualified installer should explain what moisture test is appropriate, what it measures, and the product limit it will be compared against. Review the coating manufacturer’s requirements and any mitigation recommendation in writing.
Fix water sources first
Address leaks, poor drainage and water entering at the garage door before coating. Do not apply a coating over a wet slab or assume a primer can solve every moisture condition.
Utah seasonal context
Snowmelt and seasonal water can expose garage drainage issues. Evaluate the slab when conditions are representative and disclose any prior moisture or coating failures during the estimate.
Common questions
Can an epoxy coating stop water from coming through concrete?
Do not assume so. Moisture vapor management is system-specific and may require testing and a compatible mitigation product.
How long should new concrete cure before coating?
Follow the coating manufacturer’s stated cure and moisture requirements; elapsed time alone does not prove a slab is ready.