Replacing cedar trim under Z-flashing

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Old 06-25-20, 09:25 AM
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Replacing cedar trim under Z-flashing

I just bought a house and I need to replace a piece of 1 x 4 spongy cedar trim on a wall over a roof. Does anyone have any tips for bending the z-flashing? The only thing I can think of is to grab it with a hand seamer and bend it carefully. Yeah, I know all about the worthless water diverter.



 

Last edited by PJmax; 06-25-20 at 11:43 AM. Reason: cropped picture
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Old 06-25-20, 11:17 AM
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It looks like you could remove the wood without really affecting the z flashing. You should also be able to tuck in the new piece as well. Hopefully you will find flashing behind the cedar that is actually doing the water protection.
 
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Old 06-25-20, 11:45 AM
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I agree. Use a cats paw to éxtract the nails first, then it should just roll out from under the z flashing.
 
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Old 06-25-20, 02:31 PM
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Pilot, The flashing looks pretty tight to me. But I do hope you're correct. Thanks.
 
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Old 06-25-20, 02:36 PM
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Xsleeper, I'll give it a try. Thanks!
 
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Old 06-26-20, 02:24 AM
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I'd rip the replacement piece so there is a gap under the wood. I'd also prime/paint the bottom edge prior to installation.
 
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Old 06-26-20, 07:58 AM
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Marksr,

Yes, it looked like the current trim has been ripped before installation. When I replace trim I always give it 2 coats of clear penetrating epoxy sealer on all sides before installing; it fills the wood fibers so moisture can never penetrate again. I will paint the bottom edge as well. Thanks and have a good weekend.
 
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Old 06-26-20, 08:03 AM
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The larger the gap is between the shingles and the wood the less you have to rely on paint to keep it dry. Of course a large gap looks unsightly - kind of a balance between looks and function.
 
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Old 06-26-20, 08:08 AM
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Marksr, The area I need to work on is hidden by trees so the gap won't be an problem. My main concern is preserving the trim and keeping water out of the house. The previous owner did not address any of these issues.
 
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Old 06-26-20, 08:25 AM
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More air space under the trim makes it harder for it to absorb rain water and easier to dry out if it gets wet. Some builders would leave an 1.5"-2" gap and have me paint the flashing so it wouldn't stand out.
 
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Old 06-26-20, 10:24 AM
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A 1" gap is the minimum amount that the LP Smartside trim should stay above the shingles, per the mfg. See illustration 2b.
 
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