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Thread: Help with compound angles
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7th October 2018, 06:46 PM #16The person who never made a mistake never made anything
Cheers
Ray
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7th October 2018, 07:40 PM #17Intermediate Member
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thanks
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7th October 2018, 08:10 PM #18
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7th October 2018, 09:44 PM #19Intermediate Member
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just to enable this thread to help someone else maybe.... i did a mock up of the same corner that i took a photo of before you can see why the flashing is the shape it is.......
20181007_103906744_iOS.jpg
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7th October 2018, 09:57 PM #20The person who never made a mistake never made anything
Cheers
Ray
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3rd November 2018, 10:48 AM #21Intermediate Member
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wonder if you guys can offer some advise here
so ive replaced the fascia all good - but the flashing that covers the top edge of the fascia has been previously secured to the fascia through the top edge with a nail and covered with silicon
this sort of feels wrong as that creates a possible entry hole for water
how would you normally secure the flashing?
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3rd November 2018, 01:05 PM #22
Oddly enough, a bead of Sikaflex along the top edge also works nicely as an adhesive... provided you can ensure the flashing will sit flat in place while it cures enough to bind. ie. Not a practical alternative in windy areas.
Just out of curiosity, what profile flashing are you using? Some flashings have a lip which wraps over the fascia and can be tacked through the front... I've always custom ordered mine to suit the job at hand. (Many Reece's can bend flashings to spec if you give 'em enough notice.)
- Andy Mc
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3rd November 2018, 02:10 PM #23Intermediate Member
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thats exactly what this is but it has been previously secured through the top edge
and its interesting at this end (see the photo) they have done exactly as you suggested - but the other end where there was enough room to come from the top they secured vertically
i guess i do as per the photo on the sections down further and seal the old holes with sikaflex??
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3rd November 2018, 06:32 PM #24
Not sure what happened to the reply I made earlier
Roofing screw with a rubber washer is most common.
If you are screwing thru the roof profile beneath the flashing line your screw up with a high point on the roofing
DaveTTC
The Turning Cowboy
Turning Wood Into Art
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3rd November 2018, 06:59 PM #25Intermediate Member
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think these photos show exactly what my fear is on the way the flashing has been secured
20181103_074306781_iOS.jpg20181103_074309250_iOS.jpg
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3rd November 2018, 07:01 PM #26
Help with compound angles
Is it a tile roof?
I don't normally see metal flashing with tiles like that
DaveTTC
The Turning Cowboy
Turning Wood Into Art
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4th November 2018, 09:04 AM #27Intermediate Member
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4th November 2018, 11:24 AM #28
So a barge tile something like this
Or the tiles over hang the barge board and filled with mortar something like this
Or instead of mortar like this one the tiles have a scribing fillet (timber board cut to fit under the tile and nailed to the barge board) under them
Dave TTC
The Turning Cowboy
Turning Wood Into Art
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4th November 2018, 08:54 PM #29
That 2nd pic quite nicely shows one of the disadvantages of pointing with mortar this way... it lifts from the timber introducing a gap water can sit in, rotting the top of the timber.
If you look at some of the older heritage buildings, copper, lead or even [gasp] galv iron was used as flashing/capping over the timbers, before the tiles were laid. Doesn't stop the mortar from lifting but does enhance the timbers' lifetime significantly.
Of course, houses aren't built to last anywhere near as long nowadays. (Then again, many of the lesser quality older buildings didn't last as long as a modern one will either! )
- Andy Mc
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