Am cutting out some small window holes in existing double brick wall and it is rendered inside and out.
I am not using props as the width is 600 for each opening (negligible - although I will have lintels). My concern is that when I get my windows custom made for the cavity I make that I get the flashing right. I dont want to have to use wooden reveals because I want the windows to go with the style of nearby windows which are alloy flush with render.
I also dont want to have to take out an extra course of bricks just to get at window tabs for securing the window - they can be screwed into brick from channel.
I know that the alloy frames have what looks like a rubber seal channel running underneath from windows I have installed before into timber frames but never asked what they are for. Do alloy windows come with extras like a rubber seal that slides into this channel and folds out underneath?
I dont want to have to ask my local window frame bloke again as he told me he cant give away secrets on how to install these types of windows.
Advice needed, thanks.