You think a sealer has "failed"?
This discussion applies to all manufacturer's sealers.
First we need to define what you mean. Did the "sealer" fail or did the "seal" fail? The sealer is the product, the "seal" is the condition of the project.
1. Did the "sealer" fail?
If it is a non-Aldon sealer, the answer is maybe. A good quality sealer should not fail, however, there are many lesser quality sealers being sold and they are designed for low price, not long term performance.
If it is an Aldon sealer, the answer is no it did not fail. See below.
2. Did the "seal" fail?
That can happen no matter what sealer was used. This does not mean the "sealer" lost its performance. It can mean the substrate:
Remember - Just because a project has had sealer applied does not mean the job is sealed properly and long term.