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Foam Backed Vinyl Siding

 
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Old 02-01-2016, 03:11 PM   #21
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Re: Foam Backed Vinyl Siding


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Originally Posted by red_cedar View Post
I see what you mean about thickness.
I'm pretty sure the 1 1/4" thickness is measured at 'butt' thickness and not the nailing flange where it is about 1/2 inch.

So if I added another 1/2" my nail-able thickness is apx. 1" + the 1/2" thats already there.

I'm pretty sure I should try to increase the exteriors R rating. Last time will need to be done in my lifetime, hopefully

Good point though.
I see ,being I don,t do vinyl did not really know. But being that is all it is agree not a issue.

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Old 02-01-2016, 03:26 PM   #22
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Re: Foam Backed Vinyl Siding


years ago we used to do insulated aluminum,fiber or foam was attached to the panel with glue
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Old 02-04-2016, 11:59 AM   #23
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Re: Foam Backed Vinyl Siding


I'd suggest installing to manufacturer specs unless you want a voided warranty. I can't say that I have ever seen foam backed siding installed into a built out, shallow j-channel where the foam was cut back. I understand the concept of what you are worried about, but I'd leave that to the engineers that designed the system in the first place.
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Old 02-04-2016, 03:57 PM   #24
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Re: Foam Backed Vinyl Siding


that's true because the foam, depending on the temp installed should either have a 1/4'' gap between the foam or be butted tight
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Old 02-06-2016, 07:44 AM   #25
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Re: Foam Backed Vinyl Siding


The foam manufacturer also offers a product 1/2" thick called 'easy shim'. In case you dont have the 1 1/4" J one could use regular 3/4" J.

I ended up so far shimming everything so far.
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Old 02-06-2016, 10:37 AM   #26
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Re: Foam Backed Vinyl Siding


i get it..just seems like more work to cut back for..well let's say uncertain results

but if you think it's worth it i get that
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Old 02-06-2016, 07:16 PM   #27
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Re: Foam Backed Vinyl Siding


It is extra work but it will come out nice. Not pressured to get it done and make money. Sure is taking a little while though, everything I'm doing.
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Old 02-06-2016, 07:34 PM   #28
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Re: Foam Backed Vinyl Siding


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Originally Posted by red_cedar View Post
It is extra work but it will come out nice. Not pressured to get it done and make money. Sure is taking a little while though, everything I'm doing.
Would be nice to see some picture of what and how you are doing things.
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Old 02-16-2016, 05:54 PM   #29
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Re: Foam Backed Vinyl Siding


This question goes to what Randy brought up. Length of nails.


The house has a 1/2 inch rigid foam over the studs. I'm thinking of adding another 3/4 inch rigid foam and then the siding foam which adds another 1/2 to the needed length at the nailing flange. Will 2 3/4 or 3 inch nails be to long to adequately hold the siding up?
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Old 02-17-2016, 12:34 AM   #30
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Re: Foam Backed Vinyl Siding


Quote:
Originally Posted by red_cedar View Post
This question goes to what Randy brought up. Length of nails.


The house has a 1/2 inch rigid foam over the studs. I'm thinking of adding another 3/4 inch rigid foam and then the siding foam which adds another 1/2 to the needed length at the nailing flange. Will 2 3/4 or 3 inch nails be to long to adequately hold the siding up?
Figuring the house has 1/2 sheeting that would only give you roughly 3/4 into the stud using 3"nails. Not a lot. Maybe Tom or someone else has done something like this and has some input.

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Old 02-17-2016, 08:11 AM   #31
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Re: Foam Backed Vinyl Siding


General rule when you get past an 1.5 to 2" you need to use furring strips for regular vinyl siding - many manufacturers do have preferred methods for installing their products
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Old 02-17-2016, 09:09 AM   #32
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Re: Foam Backed Vinyl Siding


Have not yet checked the manufacturer, but did with the Vinyl Siding Institute. Their information says 1 1/4 penetration with fastener into wood.. My situation is 1/2 inch + 3/4 + 1/2 = 1 3/4 inches of insulation.
a 3inch nail should work.
Maze sells 3 inch vinyl siding nails. Wont mind furring strips, but would I not be losing some R value with the wood?
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Old 02-17-2016, 09:10 AM   #33
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Re: Foam Backed Vinyl Siding


Had a somewhat similar application a few years back.
The house had double layered shakes and we added 1"
foam over before siding.Figuring the siding at 1",foam1",
1/4 " for nail's hanging loose,leaving 3/4" into sheathing.

Called siding rep. for installation recommendation.
The 3" nails worked fine because the siding offered
some lateral support.
With just foam board,I'd of gone with the furring.

One thing that was recommended, was to close off
the bottom of siding insulation plane to keep "wind wash"
from creating condensation from forming between the
wood siding and 1" foam,since the house had minimal
insulation in the walls.
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Old 02-17-2016, 09:34 AM   #34
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Re: Foam Backed Vinyl Siding


Quote:
One thing that was recommended, was to close off
the bottom of siding insulation plane to keep "wind wash"
from creating condensation from forming between the
wood siding and 1" foam,since the house had minimal
insulation in the walls.
I actually was going to do that, mostly to deter mice from getting up there and chewing the insulation.
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Old 02-17-2016, 11:13 AM   #35
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Re: Foam Backed Vinyl Siding


yea but look at that,the up bend is in the wrong position in the drainage plane,we used to cap the bottom over the foam all the time

This is where all the water that gets behind the siding will end up in that bend leading directly into the plate

I guess the top edge can be taped but maybe be best is to cap the bottom in 2 jumps,do the first bend from foundation to under the house wrap then from the foam to the first wrap.that will break any water from getting to the house..jmo

..personally i wouldn't be too concerned about the longer nails..just add more of them,go 10-13 o.c. with the nails,but the mechanic will know is the nailing isn't adequate..or should
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Old 02-17-2016, 02:14 PM   #36
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Re: Foam Backed Vinyl Siding


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Originally Posted by Tom Struble View Post

This is where all the water that gets behind the siding will end up in that bend leading directly into the plate
This return is 2" below the plate,anything that gets behind it will drain out onto the block foundation,and my siding doesn't leak!
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Old 02-17-2016, 04:40 PM   #37
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Re: Foam Backed Vinyl Siding


meant no disrespect John..just musing philosophical like..
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Old 02-17-2016, 05:00 PM   #38
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Re: Foam Backed Vinyl Siding


After some reading, like the certainteed vinyl recommendations/ requirements, I'll just limit the extra rigid foam to 1/2 inch. Its still a 1/2 more than certainteed requires but the 3inch steel maze nail will help hold it up. Dont know yet though. Cant add more nails as the wall assembly is 1/2 foam over the framing. I suppose evey 4 ft. I could use some 3" screws?
Thanks guys
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Old 02-17-2016, 05:05 PM   #39
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Re: Foam Backed Vinyl Siding


oh..no wood sheathing?then yea..forget that
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Old 02-17-2016, 05:08 PM   #40
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Re: Foam Backed Vinyl Siding


Quote:
Originally Posted by red_cedar View Post
After some reading, like the certainteed vinyl recommendations/ requirements, I'll just limit the extra rigid foam to 1/2 inch. Its still a 1/2 more than certainteed requires but the 3inch steel maze nail will help hold it up. Dont know yet though. Cant add more nails as the wall assembly is 1/2 foam over the framing. I suppose evey 4 ft. I could use some 3" screws?
Thanks guys
That is the pits no sheeting. I have done houses in the past done that way . Pain working around the meter box and such.

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