Hi,
Long story short, we have exhausted our options for getting a roof plumber to fix our roof leak, so we have decided to DIY.
The upper story of the roof is painted concrete render on brick veneer.
The lower level is colorbond standing seam roofing with two large skylights (which make the work area difficult).
The existing apron flashing has leaked several times (sealant visibly separated from wall) so we are wanting to add an over flashing.
All roof plumbers we had come out to inspect said they would not chase in an over flashing as the cut would be too close to the edge of the bricks and the render would likely continue to crack / crumble over time. Basically they didn't want to do it and wouldn't warranty it.
The area that needs an over flashing installed in approximately 9.3m long
We have two 5m lengths of colorbond over flashing that was purchased previously. If this turns out to be the wrong option we are more than happy to start from scratch.
We have been recommended to use Sika 702 neutral curing silicone to attach the pressure over flashing
We've looked over the VBA recommendations:
https://www.vba.vic.gov.au/__data/asset ... 5-Roof.pdf
Our questions:
What fasteners should we use?
What would you do in our situation?
Any advice (never done this before, so please go easy).
This is a photo of a section of this roof. The upper valley of sealant has failed multiple times, this is the ingress point.
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This is the over flashing that had been previously purchased for this job.
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Browse Forums General Discussion  19 Aug 2021 185 Bronze Member Re: Rendered brick wall to colourbond roof over flashing 2Mar 20, 2024 7:49 pm Nylon anchors, because of corbel probably best to take 100mm above Only option, as to remove previous sealant would most likely damage render and create big area to patch up. Re: Rendered brick wall to colourbond roof over flashing 4Mar 21, 2024 4:44 am  YmousHi, Long story short, we have exhausted our options for getting a roof plumber to fix our roof leak, so we have decided to DIY. The upper story of the roof is painted concrete render on brick veneer. The lower level is colorbond standing seam roofing with two large skylights (which make the work area difficult). The existing apron flashing has leaked several times (sealant visibly separated from wall) so we are wanting to add an over flashing. All roof plumbers we had come out to inspect said they would not chase in an over flashing as the cut would be too close to the edge of the bricks and the render would likely continue to crack / crumble over time. Basically they didn't want to do it and wouldn't warranty it. The area that needs an over flashing installed in approximately 9.3m long We have two 5m lengths of colorbond over flashing that was purchased previously. If this turns out to be the wrong option we are more than happy to start from scratch. We have been recommended to use Sika 702 neutral curing silicone to attach the pressure over flashing We've looked over the VBA recommendations: https://www.vba.vic.gov.au/__data/asset ... 5-Roof.pdf Our questions: What fasteners should we use? What would you do in our situation? Any advice (never done this before, so please go easy). This is a photo of a section of this roof. The upper valley of sealant has failed multiple times, this is the ingress point. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ This is the over flashing that had been previously purchased for this job. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Ymous That corbel is a real challenge. I can sort of understand why your roof plumbers have not wanted the job. I think there are only two viable options: 1. You need a custom flashing that wraps over the top of corbel and probably is recessed at least 200mm above the corbel. But with due respect to your skills this is not a DIY job. There is no way that you are getting another flashing to sit in that corbel. The bricks will break. 2. I am a massive fan of Consolidated alloys Byute tape from Bunnings. It will 100% keep the water out permanently. I used it on my own home where I had a really tricky flashing detail and nearly 5 years on, this stuff is working like new. It is used a lot in the USA and will stick to any dry surface. I just wouldn't use it in a highly visible location, but you could probably spray paint it to blend in. We also use it for window flashings sometimes. here is a link: https://www.bunnings.com.au/consolidate ... lsrc=aw.ds Cheers Simeon Architectural Homes & Duplexes - specialising in custom designing homes to your budget Get a Free Onsite Consultation Today or send a PM for information, questions or advice. Re: Rendered brick wall to colourbond roof over flashing 6Mar 22, 2024 2:34 am YmousHow would you use that product on this job? It is so simple. It's just like applying sticky tape. here is a video https://www.youtube.com/watch?v=GwL_t6X7860 Architectural Homes & Duplexes - specialising in custom designing homes to your budget Get a Free Onsite Consultation Today or send a PM for information, questions or advice. 20 Mar 2024 6 Junior Member Re: Rendered brick wall to colourbond roof over flashing 7Mar 22, 2024 7:34 am Cheers. The painted render is a bit chalky to the touch. To prepare the surface for best adhesion, what would you recommend? Also, given that there must be some movement in the apron flashing (that's why the sealant has come away from the render), would there be a trick to applying the tape you suggested? Is the tape stretchy at all? 20 Mar 2024 6 Junior Member Re: Rendered brick wall to colourbond roof over flashing 8May 07, 2024 10:43 am Coming back to this.... When installing a pressure flashing, what fixings would you use (please give a link) ? Above Pedro said nylon anchors. Anyone have a preferred product they can share? Thanks mate, is there a standard off the shelf type breathable product I can apply DIY? Thanks 2 10424 Surely your designer has answers to all your questions? If so, it would be nice to include their answers here so we can all learn something. (Of course, always good to get… 4 5455 AFAIK, flashing is a minimum standard. Out of curiosity is your window glass stamped with AS requirements in any of the corners of each pane? Im almost certan if theyre… 2 7533 |
