You had Concrete work done a while back and now the cracks that were very small and almost impossible to notice at first are opening up. You never discussed a warranty with your Contractor but it kinda seems like there should be one? How do you go about addressing this and what can you expect?

Concrete has only a few issues that normally trigger a warranty. Cracking, settling and spalling. Cracking and settling are the most common in AZ.

Too much water added to the mix, improper sub-grade compaction or plant mix ratio errors are the main culprits in cracking. Your warranty covers replacement of the cracked section(s) ONLY if a crack opens wide enough to fit a dime into within your warranty period. Fine cracks are cosmetic only and do not qualify for replacement.

Improper compaction leads to settling. If your concrete pour settles it will most likely crack as well. Your warranty will include replacing concrete sections that have settled only if they cause a drainage problem, tripping hazard, cause cracks that open up wider than a dime or if it was designed for a level structure to be built on, making it difficult or impossible to build on.

One form of spalling is caused for a common reason in AZ… water splashed onto the surface as a finishing aid. It dilutes the cement and makes for an easily eroded or de-laminated surface. A Flawed mix design can also be the culprit for surface issues causing a silica alkali reaction (concrete cancer). Unfortunately the spalling doesn’t normally show up until the after the ROC warranty is expired. If you received a 5 year warranty, from BST, any sections affected will be replaced.

When you check the status of your Tucson Contractor’s License, check out more warranty specs on the AZ Registrar of Contractors website.

We offer  a minimum 2 year warranty here at BST with a 5 year option available on most and up to 10 years available on a select few types of projects.

Thank you for taking a look

Jon Molden

BST Concrete