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-   -   Replacing wood siding with vinyl (http://www.diychatroom.com/f19/replacing-wood-siding-vinyl-101599/)

jbjones 04-15-2011 11:17 AM

Replacing wood siding with vinyl
 
I asked once, but my description wasn't very good, so I got conflicting answers. I am looking to replace wood lap siding with vinyl. After talking with a couple contractors, I think im gonna do it myself. The question is whether to go over the wood siding or remove it. Personally I would like to remove it, but after checking behind the wood siding, there is no plywood. Directly behind the siding is foil lined insulation sheathing(1/2 or 3/4 inch) then the pink fiberglass insulation. The siding is rough in places so if I left it on it would require some replacing boards and nailing down a lot of others. Not to mention issues with jchannels sticking out further than the windows. What is the best thing to do? Remove it or go over it? With or without housewrap or insulation?

jbjones 04-15-2011 11:19 AM

1 Attachment(s)
Here is a photo of what I could get without taking any boards off. Thanks for any advice I might get

Ron6519 04-15-2011 11:42 AM

I'd remove the siding and foamboard and install plywood sheathing. Install the tyvek covered by either the traditional foam used under siding or the newer siding wth the integrated insulation.
Sheath one side at a time.
Ron

Tizzer 04-15-2011 01:38 PM

This will be a fairly time consuming job for a DIYer. A contractor will have a crew with proper tools & experience.
Are you going to have any help? Ladders or staging for high work? You'll need to plan for a few nice days once you've pulled the foam board off even if you do one side at a time.
Plan on the proper window/door flashing details before the vinyl is installed.

jbjones 04-15-2011 02:06 PM

I've talked to 2 contractors. One says he would use fan fold over the existing siding then vinyl over that, and the other says he would remove the wood siding and put vinyl directly onto the insulation board that is already there. Are these both wrong ways to do it. I do have a couple of helpers. I haven't really thought about the higher parts. It a ranch style house.

Tizzer 04-15-2011 02:33 PM

.....put vinyl directly onto the insulation board that is already there. Are these both wrong ways to do it.
.............

Years ago, we framed new homes just like that for some el cheapo builders. That's all between you and the outside, 1/2" of foam and a piece of vinyl.
If you know anything at all about installing vinyl siding, you can do this or use that contractor. Depends on your budget and the time you can spend doing this.

rossfingal 04-15-2011 02:43 PM

It will probably be less expensive to leave the existing siding on, and install
Tyvek and foam-core/fan-fold over the old siding.
(Fan-fold helps to smooth out the surface - some insulation value)
Making sure the old siding is nailed, securely.
One consideration is that the "J" channel for the vinyl siding will stick out
from the window and door trim.
You could try to use larger channel - 3/4 inch is the usual: but, you can get 1 1/8th" - channel it first, then install the Tyvek and fan-fold to the inside of the channel.
You should probably caulk the channel to the window and door trim -
which-ever way you go.
If you have them tear off the existing siding: have them install Tyvek -
taped.
Make sure they use nails that are long enough - 2 to 2 1/2 inch.
Regards! :)

rossfingal

Ron6519 04-15-2011 02:46 PM

Quote:

Originally Posted by jbjones (Post 630036)
I've talked to 2 contractors. One says he would use fan fold over the existing siding then vinyl over that, and the other says he would remove the wood siding and put vinyl directly onto the insulation board that is already there. Are these both wrong ways to do it. I do have a couple of helpers. I haven't really thought about the higher parts. It a ranch style house.

Unless the house was framed with bracing to resist lateral forces, the wood siding may be it.
You need a greater understanding of the way the house was framed to make a valid cecision.
The contractor who said to just remove the wood siding and put up vinyl? Did he concern himself with how the house was framed?
Ron

rossfingal 04-15-2011 03:04 PM

I agree Ron!
I'd like to think that whoever framed it was smart enough to use metal "T"
strips or cut-in bracing.
However, I've seen too many instances where the siding (I guess)
and the drywall (I guess) would provide bracing.
Oh boy!

rossfingal

jbjones 04-15-2011 04:13 PM

The contractor was confident the framing could handle lateral forces, I asked him several times about it being stable without the siding. I am working with a budget, so the more money I can save the better. But at the same time, I don't want my house racking and cracking drywall or blowing over. And I don't want problems with moisture behind the siding. I'll pull off some boards and insulation Sunday, if I have time, and see what the framing looks like.

kwikfishron 04-15-2011 05:53 PM

If you want to look for lateral bracing just expose the bottom plate near the corners. Don’t just start ripping the siding apart.

How about a couple pictures of the house even before you do that.

jbjones 04-15-2011 06:16 PM

6 Attachment(s)
Here's several pictures. Let me know if any other pics would be helpful. Thanks to everyone for the info

kwikfishron 04-15-2011 06:28 PM

So why do you want to replace the siding, because a few boards need repaired or replaced?

jbjones 04-15-2011 06:37 PM

No, I don't like the color or look. And the wife hates it also. Like the vinyl look better

CannonD 04-15-2011 10:43 PM

Hey man, I'm in the same the same hole as you are. I don't want the J channel at the window to stick out. It seems like your house is not high, I wouldn't take that long to do it.


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