Tiny bubbles can start below a curing coating
Concrete contains pores. Air escaping while a resin coating cures can create bubbles, pinholes or craters. Sherwin-Williams describes this as outgassing, and notes that substrate conditions and application timing can influence it.
A photo can document the pattern, but it cannot establish the cause by itself. Record when the marks appeared, where they occur and whether the coating is still firmly attached.
Moisture-related blistering is a separate question
Blistering and loss of adhesion can also involve moisture beneath a coating. Treating every defect as a cosmetic bubble risks leaving the underlying cause unresolved.
A professional assessment may consider moisture, contamination, surface preparation, the existing coating and the chosen system. The findings should guide the repair scope and any limits on the expected result.
Preparation and application conditions belong in the estimate
Ask what substrate preparation the proposed coating requires and how the installer will assess the existing surface. Discuss the product’s moisture limits, temperature requirements, cure conditions and compatible primers.
There is no universal primer, extra coat or application schedule that solves every slab. The selected manufacturer’s current system instructions should determine the work.
Before asking for a garage-floor repair
Share clear photographs of both the whole floor and affected areas. Include the coating’s approximate age, when the defect appeared, any known water entry, and the original product name if available.
Avoid starting aggressive removal or chemical treatment before the scope is assessed, especially where older coatings or materials are present. Mago can discuss the intended use of the space and the next evaluation steps for a suitable flooring scope.
A clearer starting point.
- Record whether defects appeared during curing or later.
- Describe water entry, lifting, flaking and affected areas.
- Locate the original coating specification if available.
- Ask for the diagnosis, preparation and coating system in writing.
Sources and scope
This is source-based planning information from Mago Flooring. Manufacturer documents explain particular products and systems; use the current instructions for the product selected for your job. Local officials and appropriately qualified professionals determine project-specific code, tax, legal and regulated-material requirements.
Source review: Nov 11, 2026. Next review due: Dec 1, 2026. Tell us about a correction.