seeking information and specs on black window/door manufacturers that would work in multi-seasonal house

Hey all, we have a mid 90's house with a couple of glass brick windows, one of which has started to seep with heavy rain causing the interior sill Gib to crumble. How should I tackle this as I can't see any obvious area where water may be getting in. Cheers

Hi. Our new build has Colorsteel cladding and aluminium joinery both in the colour Flaxpod. The aluminium joinery (from First Windows) looks a lot different from the Colorsteel colour. Our builder has confirmed that the aluminium joinery has been powdercoated in Flaxpod and that the variation in colour is due to the difference in how Colorsteel is coloured and the powdercoating process of aluminium. Is our builder's explanation correct? Thanks in advance.

During the gusty winds lately we have had a tree fall through one of our single glazed sliding windows. A glazier came to cover it up and look at replacing the glass, but has said it has damaged the aluminium window frames beyond repair and to let the insurance company know that the frames will need replacing as he cant fit glass to them. The insurance have requested for a loss-adjuster to come and assess the damage to the frames, and the other damage it has caused, which got me wondering. Are they going to be able to replace the window frame with another single glazed window frame (are these even still a thing and are you allowed to install single glazing anymore?) or will they have to replace it with a double glazed unit? If they will replace it with double glazing, we will likely get a quote from the repairers to replace a few other windows, to the side of the broken one, so they all visually match and for the performance upgrade. I know I can just ask the loss-adjuster when they come but thought someone may have been through this before or have a insight. Thanks