What to record
- Identify the feature and its function from existing records where possible.
- Show the surrounding concrete, any prior patch and visible water marks.
- Do not disturb an unknown pipe or concealed service to obtain a better picture.
The decision to discuss
Ask which trade needs to identify or protect the feature before concrete work begins. A surface repair should not promise to correct an unknown plumbing, gas or structural condition. Define the concrete work and any referral separately.
Why the surrounding context matters
Joints can serve different purposes in a concrete assembly. The work should identify the actual junction and how the retained surfaces relate to it. A filled line and a functioning joint are different observations; ask for the intended detail before approving the finish.
Further background: NRMCA: joints in slabs on grade. This general background does not diagnose your property.

Send the town, approximate size and access details with wide views and close-ups. Photos help us route the inquiry; we confirm the project scope before booking.