You can find more information about blistering, on this website, by clicking on the following link:

<a href="https://www.house-painting-info.com/blistering.html">Blistering Paint – Causes and Solutions</a>

If you currently have this issue, the paint will have to be removed and then repainted. First make sure that the cause of the blistering is fixed before painting, or it can happen all over again!