Concrete repair or replacement: what needs assessment?

Cracking, flaking, settlement and pooling are different observations and can occur together. Note where each appears, whether it is changing and any effect on access or use.

Photos and a questionnaire help explain the problem, but they cannot establish the entire condition, support or structural suitability of a surface.

Crack/joint treatment, surface repair or resurfacing, slab lifting and removal/replacement address different aspects of a project. Ask what the proposed method can improve and what it leaves unchanged.

A lifting method is not automatically a remedy for a deteriorated surface. A new slab does not by itself prove an underlying drainage or support issue has been corrected.

• What is the assessed cause or concern?
• What can this method reasonably change?
• What conditions make the method unsuitable?
• Which underlying issue still needs attention?

NRMCA’s educational material describes scaling and factors associated with it. The cause at a particular property still needs qualified assessment. A photo of flaking concrete is not a universal mix specification or diagnosis.

Ask the assessor to distinguish the observed symptom from its proposed cause, then explain how the repair scope addresses both where appropriate.

A useful recommendation explains the observations, alternatives and limitations. Ask why a proposed repair or replacement is appropriate for this surface and what could change the decision.

If the provider does not perform one method, that limitation should be disclosed. Availability of a replacement service is not proof that every repairable surface needs replacement.

Prepare safe overall and close condition photos, an approximate affected-area sketch, known repair history and actual water observations. Include uncertainty rather than forcing the information into a method category.

The interactive guide can organize your questions. A qualified site assessment remains the path to a construction decision.