i may have made a wrong assumption with my garage roof. I have a thick flat concrete roof that was leaking like a sieve and couldnt seem to stop by adding more bitumen. The roof was lumpy with minimal run off, so decide to build a new glassfibre sheeted roof on top.with a wood and block frame. That seems to have gone well and now finished, but notice some condensation, i assumed that it wouldnt be problem with glassfibre only with metal? Is the condensation only because the concrete roof was wet and sodden and will stop when dries out? If not suggestions? I have left the bottom edge of sheets nsealed as i thought airflow would be good?
jon
jon
