Roof Restore Toledo Report post Posted March 25, 2019 Hello. I have been cleaning roofs for a few years and have had good success doing so. Today I just landed my first cedar shingle job and was wondering if the solution I use is ok to use on such materials. I use 30/70 SH/H2O and slomo surfacant. If not, could sombody please let me know what I need to use? The job is this Thursday the 28th. Thank you in advance. Share this post Link to post Share on other sites