What cold joint means
A cold joint forms when fresh concrete is placed against concrete that has already started to set, so the two do not bond as one.
Where it matters on a concrete job
Late trucks and big pours cause unplanned cold joints, which can leak or crack. Schedule trucks close enough and plan where a construction joint goes if the pour has to stop.
What it costs
Jobs that involve cold joint are priced in the concrete slab cost guide: about $5,100 typical, usually $2,800 to $7,350. The guide shows its sources and what moves the price.
Work it out
- Cost guide: Concrete slab cost
- Tools, templates and guides: Free concrete resources