Concrete cover

What concrete cover does

Concrete cover protects reinforcement from corrosion, fire exposure, mechanical damage, and aggressive moisture. It also helps the reinforcement work in the intended position within the structural element.

Why cover errors are expensive

Cover problems are hidden after the pour. If steel is too close to the surface, corrosion risk rises and repair can require scanning, breakout, patch repair, coating, or structural review.

Common mistakes

• Cover blocks are missing, crushed, or displaced during the pour.
• Reinforcement cages sag because they were not tied rigidly.
• Corners, openings, and edge beams lose cover first because they are harder to hold.

What to inspect

• Spacer type, spacing, and stability before the pour.
• Steel position at edges, corners, penetrations, and formwork faces.
• Photo evidence before concrete hides the check.