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Old 04-15-2011, 10:59 PM   #16
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Replacing wood siding with vinyl


First order of business is to remove a piece at the corners of the building. Generally, a foam sheathed building will have a 4' plywood shear panel on each corner, both sides. If not, it's still possible that they used let-in steel bracing, or criss-crossed strap bracing. I've personally done each way independently, as well as combinations of all 3.

Looking at your situation, I personally would rip the old siding. It's nearly flush to the window frames as is. Nothing you do with the J channel is going to be visually pleasing, IMO.

Water infiltration won't be easy to avoid either. Chances are, you have infiltration problems now that you aren't aware of, unless you're in a dry climate. Vinyl siding requires lots of behind the scenes details to properly manage water.

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Old 04-16-2011, 09:13 AM   #17
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Replacing wood siding with vinyl


Lone makes some good points.

This would be a tough DIY job unless you have access and
experience with a brake and do enough research to know
what is the most effective approach.
One of the many things a lot of Vinyl installers omit is the
proper attention to detail needed to keep out water.
I've even seen seasoned"installers "think that a little caulk will solve
some of these issues and I've found a lot of costly damage from
this assumption.Without proper installation techniques,you'll
be wasting your time,the material,and figure on some expensive
repairs in a few years.

If your home had regular sheathing it would be a much easier
task.You may have some fastening issues in certain locations
because of the foam.

I have some ideas on how to approach this,and will wait till you
do your inspection so we can see what your up against.
If you think you want to do your own install I'll offer some
tips at that point.
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Old 04-16-2011, 01:37 PM   #18
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Replacing wood siding with vinyl


Wow, what rot? But if both you & the wife insist- go for it. At least you only have 3 1/4 sides to replace. All those outside lights will have to be dealt with, along with the electric meter. The lights are probably screwed into the wood siding, vinyl won't hold them.
I'd do something with that "accident waiting to happen" mini-step at the back door.
We need a picture of a corner with no siding on it to see if it's properly braced.
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Old 04-17-2011, 01:27 PM   #19
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Replacing wood siding with vinyl


So I removed a couple pieces of siding. One about 4 feet up, and the bottom piece. I see a 2x10 running across the bottom. There is no plywood running 4 ft out or up. I don't want to remove the insulation board. I had another guy come out this morning and he says he would suggest removing the wood siding, wrap in tyvek and go over what's there. What do ya'll think
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Old 04-17-2011, 02:27 PM   #20
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Replacing wood siding with vinyl


You should do a search of, "diagonal cross bracing+location" to see where this is located on the house(and how). Right now you're just guessing, and not well.
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Old 04-17-2011, 03:33 PM   #21
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Replacing wood siding with vinyl


You need to find out where the shear resistance is in the structure. If there are no shear panels on the corners, there needs to be some form of bracing, whether it be strap, kerf-in or diagonal wood, let-in bracing. Something needs to keep the walls from racking.

Siding should not be considered a structural component.
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Old 04-17-2011, 04:00 PM   #22
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Replacing wood siding with vinyl


To illustrate what is being explained. Your pic shows silverboard and not plywood on that corner. You "should" have a diagonal brace.


You'll have to have the siding off to check. You could buy a half-dozen sheets of 1/2" plywood so it's on hand if no bracing is found. Or just use them on the corners anyway.
Foam board isn't hard to pull off, but I wouldn't poke holes in them if they aren't going to be replaced.
These "guys" you have looking over the house, are they legit?
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Old 04-17-2011, 07:56 PM   #23
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Replacing wood siding with vinyl


I'll have to look into it when I get more time. I ended have to replace a water heater today. Yes, the first one is a pretty big company. The guy this morning has his own little small thing. He was referred to me by the lumber yard. So I'll have to pull off a sheet of the insulation I guess? The wood siding was real brittle and falling apart as I pulled it off
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Old 04-17-2011, 08:03 PM   #24
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Replacing wood siding with vinyl


No doubt, the best coarse of action is to rip the old siding.

At bare minimum, you should do at least 4' shear panels on the corners. If it were me, I'd sheath the whole building with OSB. Be aware of the strength axis though. Unless you can get stand-ups, you'll have to run horizontally. The strength axis is marked on the back of the sheets and should be installed perpendicular to the studs, otherwise, you'll end up with buckling between the studs.
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Old 04-17-2011, 10:43 PM   #25
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Replacing wood siding with vinyl


I’m guessing you have some type of existing bracing if built to minimum code, awaiting pictures.

Minimum code; http://bct.nrc.umass.edu/index.php/p...n-the-outside/

http://publicecodes.citation.com/ico...002_par025.htm

“The racking resistance of APA plywood or OSB wall bracing panels and the lateral load capacity of a shear wall for wind and seismic loading are not affected by the orientation of the sheathing panels. Panels may be installed with the long, or strength, axis either horizontal or vertical. All panel edges of shear wall sheathing, however, must be attached to framing or blocked. Although not required by model building codes, some local jurisdictions require blocking of horizontal panel joints at wall bracing segments (generally building corners and at 25 foot intervals in long walls). For this reason many designers and builders prefer to install sheathing with the long axis vertical, thus avoiding the need for additional blocking.”---- http://www.apawood.org/pablog/index....al-or-Vertical

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Old 04-28-2011, 12:08 PM   #26
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Replacing wood siding with vinyl


New question. I'm thinking to go ahead and remove old siding and put up osb. The question is would it be ok to put the osb on top the insulation board, then tyvek wrap, or do I have to remove the insulation
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Old 04-28-2011, 05:12 PM   #27
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Replacing wood siding with vinyl


You want to remove the insulation and get back to the framing and deal with any rot issues if they exist. Install the OSB to the studs.
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Old 04-28-2011, 06:01 PM   #28
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Replacing wood siding with vinyl


Can I salvage the old insulation or do I need to get new stuff?
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Old 04-28-2011, 06:33 PM   #29
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Replacing wood siding with vinyl


Hopefully you can. You should be able to salvage most of it if your careful. If they nailed the s*** out of it you’ll have problems.
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Old 04-28-2011, 07:44 PM   #30
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Replacing wood siding with vinyl


You know with the new sheathing the foam is optional.

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