Not many zergs get too many roaches because they know if the protoss responds correctly its not that hard to stop.
I think its important to not panic and throw down forcefields like crazy but you should be precise with them. Once your forcefields are good dealing with roaches is a matter of keeping your immortals alive.
Even the smallest donations help keep sc2sea running! All donations go towards helping our site run including our monthly server hosting fees and sc2sea sponsored community tournaments we host. Find out more here.