I put a small 16"X32" glass block window in my bathroom. This is the first time I’ve worked with glass block and I fear that I waited to long for my final mortar clean up. It’s hard as a rock now and I have quite a bit on the glass face. The sponge is just being shredded by the mortar. Is there anything I can do to clean up the mortar and get it just between the grout lines? Or will I have to rip the glass out and start over and chalk this one up to learning?

Thanks DIYers!
I’m finding that scratching with a flat head screw driver is allowing me to reduce the grout lines and get big chunks off, leaving much less for the clean up. Thanks for the tips guys (and gal!)
More detail. The flathead screw driver worked great. The grout sponge was worthless, but then I started using a green scrubby pad that I use to clean dishes and it worked great. So it’s all clean now.

Thanks for your advice all.

Try a razor blade.

This entry was posted on Thursday, October 28th, 2010 at 10:22 pm and is filed under Window Cleaning Tips. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.