How to repair glass brick mortar?

deeian

I want to fill in the joints that cracked and chipped away on my glass block window in the laundry room next to a sink and also in the bathroom next to a bathtub. I'm just wondering if I can use the Mortarfil caulking tube to fill these joint gaps. If so, do I need to break away the old fillings (mortar?) before applying the Mortafil?

Also, on the edges of my bathtub, there is a grout-like sealant instead of silicone, which I'm not sure if it's the appropriate sealant for a wet environment. There is also a gap in one area of the bathtub edge and I'm wondering how I should seal it.

  

Jewelleryrescue

Hi @deeian 

That  gap in your laundry might be best covered  by a  timber strip/moulding  there are also plastic striips avaliable at  Bunnings.  Timber looks nice and some are pre undercoated simply use a  little liquid nails will glue it in place is the simlpest option. A plastic strip will never  rot as a  functional option.

Measure the gap you want to cover so you can look at the best cover up trim be mindful about how wide the trim is to i would aim at 10mm width.

The bathroom you allready have a chalking gun buy a  bathroom silicon white and tape along the walls and bath egde  for a neat job and fill the tile to bath  gap  Use a  bathroom silicon as it is usually more mould resistant apply it on bone dry surfaces.