I'm wfp(14 months) and just switched to a vikan hi-low brush straight filaments the non fluffy one.
Had a few leaded windows to do this week and leads been peeling off thankfully been able to push back in place has anyone else experienced this is it a case of the brush being
1. too course ( dosen't feel that stiff

)
2. im pushing to hard.
3. does the pure water eat away at the glue on modern leaded windows?
4. it just happens as it did when clening trad with scrim?
I'm just concern if customer see's it will get blamed on me and my wfp system.
also has anyone had a grilling from people with wooden windows i.e they'll rot away, i just say that if the windows are in condition it won't harm them it is only water and it's less harmfull than rainwater.
any opinions anyone thanks lee