Gentlemen,
This is hard to explain, but let me try anyway. If I could work out how to attached photographs here, I would, so anyone who can tell me that bit will save confusion. Anyway ....
I have a window in a wall above a tiled roof (slope about 30 degrees). The window (fixed light) is triangular as its top edge is horizontal, and its bottom edge follows the line of the roof below. Imagine a triangle on its side, about 2000mm along the top (horizontal) edge and 1000 along the vertical, with the top corner a right angle. Butting to the vertical of the window frame (i.e. down the lower roofline) is a brick wall, to which the lower roof also attaches. The lower roof forms a right angle with the window, i.e. is in the horizontal to the window. Ahhh, architects!
The house is 40 years old, and my guess the window has ALWAYS leaked in one way or another. There are generations of silcone and extra tin and /or lead flashings up there. We have owned the house for about a year, and the first thing I did was replaced most the existing aluminum flashings with 400mm lead, a great improvement.
The problem is that the window is recessed into the brickwork about 80mm, forming a step at its lowest corner. Water runs down the window/roof flashed junction and naturally hits this corner.
As I want to replace the window with a double-glazed composite window, now is the time to re-do this mess of flashings. The question is, using what, and how? It seems to me that the best way would be a fabricated lead flashing, soldered to form a complex lower corner. Say that to a roofer in Australia - did I mention that bit - and get blanks stares. I guess the alternative is Aluminium flashing, no idea if silicon and rivets will form a durable waterproof junction in such light material.
So, suggestions from the experts? No, bricking up the window is not a choice.
Duncanr
Photos now below. Breezer, you sound like you know what you are doing, tell me if you can see 'em, then someone can fix the problem.
http://i91.photobucket.com/albums/k306/Duncanr/PICT0051.jpg
http://i91.photobucket.com/albums/k306/Duncanr/PICT0050.jpg
http://i91.photobucket.com/albums/k306/Duncanr/PICT0049.jpg
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This is hard to explain, but let me try anyway. If I could work out how to attached photographs here, I would, so anyone who can tell me that bit will save confusion. Anyway ....
I have a window in a wall above a tiled roof (slope about 30 degrees). The window (fixed light) is triangular as its top edge is horizontal, and its bottom edge follows the line of the roof below. Imagine a triangle on its side, about 2000mm along the top (horizontal) edge and 1000 along the vertical, with the top corner a right angle. Butting to the vertical of the window frame (i.e. down the lower roofline) is a brick wall, to which the lower roof also attaches. The lower roof forms a right angle with the window, i.e. is in the horizontal to the window. Ahhh, architects!
The house is 40 years old, and my guess the window has ALWAYS leaked in one way or another. There are generations of silcone and extra tin and /or lead flashings up there. We have owned the house for about a year, and the first thing I did was replaced most the existing aluminum flashings with 400mm lead, a great improvement.
The problem is that the window is recessed into the brickwork about 80mm, forming a step at its lowest corner. Water runs down the window/roof flashed junction and naturally hits this corner.
As I want to replace the window with a double-glazed composite window, now is the time to re-do this mess of flashings. The question is, using what, and how? It seems to me that the best way would be a fabricated lead flashing, soldered to form a complex lower corner. Say that to a roofer in Australia - did I mention that bit - and get blanks stares. I guess the alternative is Aluminium flashing, no idea if silicon and rivets will form a durable waterproof junction in such light material.
So, suggestions from the experts? No, bricking up the window is not a choice.
Duncanr
Photos now below. Breezer, you sound like you know what you are doing, tell me if you can see 'em, then someone can fix the problem.
http://i91.photobucket.com/albums/k306/Duncanr/PICT0051.jpg
http://i91.photobucket.com/albums/k306/Duncanr/PICT0050.jpg
http://i91.photobucket.com/albums/k306/Duncanr/PICT0049.jpg
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