Why epoxy coatings peel on factory floors

Peeling can result from weak previous coating, inadequate cleaning, poor mechanical profiling, unsuitable application conditions or moisture-related pressure at the slab. A coating that looks intact in one corner may behave differently near external walls or wash-down zones.

Before prescribing another coat, examine the failure pattern. Blisters, exposed powder, oily patches and damp edges may each suggest a different cause and repair strategy.

Moisture cannot simply be painted away

A visibly wet slab or one receiving moisture from below may be unsuitable for a standard impermeable overlay without further treatment. The right decision depends on moisture test methods, the system’s tolerances and whether an active water source can be corrected.

In Bangalore industrial sheds, check leaks, drains, wash areas and slab-edge water paths, especially around rainy periods. Do not describe a coating as universally waterproof or moisture-proof without a relevant product specification.

How to approach an old peeling coating

Loose, chalking or poorly bonded layers normally need removal until a suitable sound base is reached. Grinding, shot blasting or another specified preparation method can expose whether the remaining substrate is strong enough for new work.

Defects such as cracks, damaged patches and depressions may then need repair or levelling with an appropriate material. Re-coating a failing film without correcting the underlying failure can reproduce the problem.

When a new overlay can be considered

Once the substrate is sound, sufficiently dry for the selected system, properly profiled and appropriately repaired, a new industrial overlay may be considered. Interior Semi Gloss or PrimeShield Heavy Load could fit different traffic conditions, but neither should be selected before those checks.

Request the contractor’s documented surface preparation, moisture acceptance criteria, adhesion expectations, weather constraints and cure-time plan. This is especially important when the project is urgently timed around production.

Practical steps for moisture · peeling · adhesion

Use this sequence as a planning guide. The contractor should adapt the method to test findings, product instructions and actual factory operating conditions.