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PVC Coated Aluminum And Copper

 
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Old 06-08-2019, 04:59 PM   #1
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PVC Coated Aluminum And Copper


Landed a huge copper gutter job that has pvc coated aluminum fascia. Think the pvc coating is thick enough to prevent the galvanic reaction? Other options are covering the fascia with I&W or applying it directly to the back of the gutter before putting them up.


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Old 06-08-2019, 05:13 PM   #2
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Re: PVC Coated Aluminum And Copper


Always wondered about this too. Other than cut edges, I have never seen corrosive reaction. If I didn't get a comfortable technical support answer from the aluminum company I would wrap the back of the gutter

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Old 06-08-2019, 05:22 PM   #3
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Re: PVC Coated Aluminum And Copper


Would be pretty easy to stick some zip tape or something like that to the back of the gutter I would think....how many feet of gutter?

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Old 06-08-2019, 05:24 PM   #4
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Re: PVC Coated Aluminum And Copper


I took down a few aluminum gutters a couple of years ago that were only a few years old and there were tons of holes in the bottom. Wooden fascia too.House had copper valleys.

This has me thinking now that since itís the water that essentially creates the reaction that maybe it would work against the pvc aluminum since it would be the back of the gutter. Or maybe just enough moisture could create the problem. ?


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Old 06-08-2019, 05:44 PM   #5
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Re: PVC Coated Aluminum And Copper


Normally the PVC coating is pretty thick on the fascia or coil. I have seen where coil is completely eat up on treated lumber ,but the coating is still complete, eats away from the back side. Am sure the aluminum company is going to tell you to cover it , just to cover their back side.
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Old 06-08-2019, 06:00 PM   #6
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Re: PVC Coated Aluminum And Copper


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Would be pretty easy to stick some zip tape or something like that to the back of the gutter I would think....how many feet of gutter?

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350. Only a roll and bit of a second one of i&w if I cut it up. How many feet in those zip tape rolls I was kinda more just curious about if there would be a reaction


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Old 06-08-2019, 06:26 PM   #7
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Re: PVC Coated Aluminum And Copper


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350. Only a roll and bit of a second one of i&w if I cut it up. How many feet in those zip tape rolls I was kinda more just curious about if there would be a reaction


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Why don't you just one of the 4" rolls of flashing tape.
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Old 06-08-2019, 06:32 PM   #8
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Re: PVC Coated Aluminum And Copper


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Why don't you just one of the 4" rolls of flashing tape.


Yea just looked and I actually have a roll here. Back of gutter is 5Ē though Iím sure the 4Ē would keep it away enough from fascia to work.


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Old 06-08-2019, 06:43 PM   #9
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Re: PVC Coated Aluminum And Copper


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Yea just looked and I actually have a roll here. Back of gutter is 5Ē though Iím sure the 4Ē would keep it away enough from fascia to work.


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No drip edge I take it.
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Old 06-08-2019, 06:52 PM   #10
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Re: PVC Coated Aluminum And Copper


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No drip edge I take it.


Think just on the rakes. Shingles are long enough where wouldnít matter anyway


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Old 06-08-2019, 06:54 PM   #11
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Re: PVC Coated Aluminum And Copper


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Think just on the rakes. Shingles are long enough where wouldnít matter anyway


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that will it easier for you with the added tape.
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Old 06-09-2019, 06:58 AM   #12
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Re: PVC Coated Aluminum And Copper


I wonder if there’s ever been an issue of the copper granules used to prevent mold breaking loose of the shingles and eating away at aluminum gutters?
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Old 06-09-2019, 08:12 AM   #13
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Re: PVC Coated Aluminum And Copper


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I wonder if thereís ever been an issue of the copper granules used to prevent mold breaking loose of the shingles and eating away at aluminum gutters?


When they first came out I thought there would be. Havenít seen any signs at all. Maybe not enough granules to create the reaction?


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Old 06-09-2019, 08:46 AM   #14
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Re: PVC Coated Aluminum And Copper


Also makes me wonder if a strip of copper at the ridge to prevent algae on the shingles would eventually eat at the gutter. Hmmm? I was just thinking about doing this to my own roof.

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Old 06-09-2019, 12:22 PM   #15
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Re: PVC Coated Aluminum And Copper


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Also makes me wonder if a strip of copper at the ridge to prevent algae on the shingles would eventually eat at the gutter. Hmmm? I was just thinking about doing this to my own roof.

nicko


Not sure if it something over time that can cause an issue or not but Iíve never seen or heard of the regular aluminum gutters we all install developing an issue from that strip or the shingles.

Between all the houses we install where we remove old gutters and all the ones I just look at year after year itís something I think I would have definitely come across. .

032 gauge aluminum might deal with it better than say a piece of trim coil. Other option is I could have no idea what Iím talking about


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Old 06-13-2019, 08:18 AM   #16
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Re: PVC Coated Aluminum And Copper


Quote:
Originally Posted by nickko View Post
Also makes me wonder if a strip of copper at the ridge to prevent algae on the shingles would eventually eat at the gutter. Hmmm? I was just thinking about doing this to my own roof.

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I stripped and shingled my own garage last weekend. I used a zinc strip as algae prevention.
I tore my old gutters down and will replace them as soon as I get a minute away from putting gutters on other people's homes. Time will tell how things react.
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Old Yesterday, 04:34 PM   #17
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Re: PVC Coated Aluminum And Copper


Keep in mind, PVC coated coil stock is no different than regular coil stock. They just apply the paint, really thick, to get the wood grain look.
The paint is the same.
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Old Yesterday, 05:17 PM   #18
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Re: PVC Coated Aluminum And Copper


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Keep in mind, PVC coated coil stock is no different than regular coil stock. They just apply the paint, really thick, to get the wood grain look.
The paint is the same.
I don't think I have ever seen a case where it was corroded front to back through the PVC painted coating , always back to front as in the case of being putting over PT with a flashing or warp barrier.
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Old Today, 10:00 AM   #19
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Re: PVC Coated Aluminum And Copper


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I don't think I have ever seen a case where it was corroded front to back through the PVC painted coating , always back to front as in the case of being putting over PT with a flashing or warp barrier.
Same here.
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Old Today, 10:26 AM   #20
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Re: PVC Coated Aluminum And Copper


Maybe Iím Overthinking this.


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