Could anyone help me with some pictures of the correct placement of flashing for an old sash window frame that is being put into a 1910 weatherboard?

It is a sash window from a brick house and will be installed from the inside. There is no plaster on the wall on the inside and the weatherboards can be taken off as I need to put sarking up too at some point.

I was intending on using aluminium (as I have plenty) and I am particularly interested in how the flashing is cut and overlapped correctly and where in relation to the architraves it is.

Could anyone also make recommendations on gaps around the window? I have seen some referenced to leaving 10mm under the sill to allow drainage.

The only way I think it can be fixed to the frame is top and bottom as the weights are running down the sides.

Thanks for any help ...



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