kerdi drain - connections only abs and pvc?
We live in San Francisco, CA and the code here requires us to use iron pipes only for our plumbing (no PVC nor ABS). Can we use the Kerdi Drain/System if the connection only come in ABS or PVC? What would be a good alternative? I was all excited about going Kerdi, but DH husband just pointed this out. Can the Kerdi membrane only be used with the Kerdi drain? I heard the system was build around said drain. Please advise.