Hi All.
Could anyone tell me what those marks are which appear on sealant around areas in regular contact with water, please? I think they start off yellowish and eventually turn to pitch black.
I am also wondering how they can be a) avoided and b) removed. We have tried Flash (don't know which one) but that didn't remove a bit.
They have totally surrounded the kitchen sink and are found on the bathroom window sill as well. There is also some kind of greyish dusty looking deposits which has appeared on nearly all of the window sills in the house. What is that and how is it avoided/removed?
Thanks.
Could anyone tell me what those marks are which appear on sealant around areas in regular contact with water, please? I think they start off yellowish and eventually turn to pitch black.
I am also wondering how they can be a) avoided and b) removed. We have tried Flash (don't know which one) but that didn't remove a bit.
They have totally surrounded the kitchen sink and are found on the bathroom window sill as well. There is also some kind of greyish dusty looking deposits which has appeared on nearly all of the window sills in the house. What is that and how is it avoided/removed?
Thanks.