Installing decktight on steel corrugated iron

Blackbox · Aug 05, 2024 3:24 pm

Hi,
I have put a range hood in my BBQ area, I just need to install the deck tight to secure it from rain water,
This seems like a simple question but how should i go about getting it sealed in the low ridges given the weird profile of the iron roof?
Taking into consideration the inside will be visible from the BBQ area, so would rather not have the back of tek screws or pop rivets visible.

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Pulse · Aug 05, 2024 7:57 pm

I think you would normally over flash that pan from the ridge so water doesn’t pool where you have blocked that pan, then a red decktite, wait for a real roofer answer though

chippy · Aug 05, 2024 8:28 pm

Pulse

I think you would normally over flash that pan from the ridge so water doesn’t pool where you have blocked that pan, then a red decktite, wait for a real roofer answer though

It's a bit hard to get an overall picture but from what I can tell I'd agree with Pulse. It looks like a low pitch roof with a deep profile. You can't put a dektite on that as it will effectively make a dam that will leave standing water in the profile.
You would need to do what pulse said and flash from the ridge down to and over the flue so water sheets off.
Have you got a more wide angle shot showing the entire roof and sheet profile including angle of pitch?

Blackbox · Aug 11, 2024 8:34 pm

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chippy · Aug 11, 2024 9:26 pm

You are definitely going to have to flash that from the start of the flat roof and down over the flue. You can then dektite that to prevent water penetration.
You'll need to get it bent up as it won't be an off the shelf flashing.
If you try and put a dektite on as is you will end up with a huge puddle of standing water backed up behind the flue.