Vinyl over plywood

It makes sense to me that I could install vinyl siding over existing T1-11 plywood siding (no sheathing-the siding is the sheathing, with builders paper under it), but would I put a new layer of building paper over the plywood before installing the vinyl?

Also, the existing siding has vertical 1x3 "battens" at every stud. Could the vinyl be installed over this, leaving about a 3/4" gap between the vinyl and plywood between the strips?

 

I would remove the battens as they will cause lay problems with the siding. You want a solid stratum to attach your siding.

 

Thanks. What about the builders paper?

 

I prefer Tyvek, but others advocate builder's paper. Probably a toss up, but added protection for your underlayment is needed.

 

New foam backed vinyl siding is superior any other siding material no maintanance, very good insulation, we use ***** with 1,5 inch insulation and a R value of 5,3, highest on the market will be qualifying for tax credit this year $1500. NoAds.com As for Tyvek bake paper does not drain any moisture behind it therefor will cause mold and moisture damage to your walls. Use raindrop by green guard not much more in price but a lifetime of drainage for any water coming behind your siding. good luck

Peter

 

I have been in the vinyl siding business for 20+ years and do not recommend foam backed siding.
Most does not have a R-value of more than 5.0, Not to mention the cost of the material.
You can achieve better and cheaper by using 1" foam underlayment that will give you a R-value of 6.5! and DOES qualify for the 09 tax credit... Foam backed siding does not!!!

As for the sheathing it is recommended to cover with foam or felt before applying vinyl.

In my experiance with tyvek; every home I have stripped that has had tyvek has also had mold issues because of it!

Hope this helps you.. good luck!!!
Steve

 

OK, on the builder's paper question, my main concern was whether sandwiching the plywood between builder's paper on both sides would cause issues. Like, enclosing moisture around the plywood.

Thanks,

Steve

 

I had siding installers come out a year and a half ago and it was a terrible experience. I have been dealing with them ever since to come back out and do it right. No green board over old siding, siding bulging and streaks in siding during manufacturing but still installed. A crew came out to take siding off, put green board under and put siding back up on front of house only. came back from four days away and siding is hanging off house where reinstalled. Only one side of four has green board over the old wood siding. do I have a case in demanding the entire house be redone with green board installed over old siding?

President of operations says its only a three percent improvement with green board. I told him thats not his decision I payed for the propper install.
Anyone else work with p----x.

 

Do I need to keep preasure on the siding company to come back and put green board over the entire house?

I had insallers come out and it turned out to be a terrible experience. I was lead to believe that I didn't need to have the green board up over the old sidng. so the job was done and there were many problems. still are many problems. The president of operations is basically ignoring me. do I have a case in demanding he have a crew come out and redo the entire house?

 

Welcome to the forums! I am assuming by green board, you are referring to the thin insulation boards. It helps to have that on to help smooth out an otherwise crooked wall. On a new installation it is hardly necessary. It adds no appreciative insulation value. What type siding did you have on the house previously? If it was a smooth install, then the insulation board wouldn't be an absolute. If you paid for it and it is in the contract, then, yes, you should have it installed. Going back and trying to install the insulation board after the siding is already up will require a total pull down of the siding or it will never fit properly and, as you have found out, it will fall off in a good wind.

 

I never got a response to my most recent reply about the plywood siding (which would be directly under the vinyl) being sandwiched between two felt layers. Any takers?