Wrap or No wrap under vinyl?

[tonysellscars]

Should the garage be wrapped before siding placed on? I have estimates with builders including wrap and another tells me he never wraps on 95% of garages he builds but can for me if i want it..just whatever the cost is.

wrap or no wrap?

 

[HMCFab9]

I'd think it might depend on if you were planning on keeping it heated
(as in for a workshop) during the colder months.

 

[tonysellscars]

If I do heat it..it would only be for couple hours at a time. Just did not need any extra expense if not really necessary.

 

[Jim Johnstone]

What was the difference in price? Personally I would do it if I were building a new shop.

 

[tonysellscars]

Not sure, but i would guess $200 or so, I am so over budget it's sick...but hey, my wife says I always go too big. I say i will do this, and then do that. But who doesn't right?

 

[dlewis]

Whatever you end up doing you still have to wrap any openings in the building,windows doors etc. with a rubber membrane.

 

[bczygan]

Wrap

 

[JakeKohl]

Vinyl siding is not 100% rainproof and one stupid goof by an installer could result in a have a substantial and regular stream of water on your unwrapped siding...the wrap could prove itself very useful. I would do it.

 

[tonysellscars]

JakeKohl...nice quote brother!

Thanks for all the comments so far.

 

[KELLHAMMER]

Building wrap may be required by code, regardless of whether or not the building is heated. Correctly termed as the "weather barrier". Same as in roofing there is a layer of underlayment is installed to protect against water intrusion. No siding is completely weather-tight, driving rain can get behind siding and over a period of time, rot the building out. Unless, you live in an area that gets little or no rain, the weather barrier is an essential component in the exterior wall. No weather barrier and "Save alittle now and it will cost a lot later "

 

[JakeKohl]

JakeKohl...nice quote brother!

Thanks for all the comments so far.

Thanks...it definitely applies! It's what a builder friend of mine told me when I started talking about the possibly reducing the footprint of my garage. That made me go back to my original plan and MAN was he right. He builds multiple-million dollar lake homes (and sometimes a lake to go with it).

 

[Cobra6]

I get both answers here - but most do not - the vinyl seems to have trouble expanding and contracting without rippling with the wrap under it -

there are even a lot of houses here where they do not put the wrap under vinyl - I noticed when the tornadoes came theough a couple of years ago -

I would ask the guy putting the vinyl on if he has a way to put the wrap on without causing trouble for the vinyl.

I left the wrap off the outside and have the moisture barrier inside - that is the way my builder does them, not sure which is best.

 

[Lurch67]

Wrap and go big. Couple years down the road you'll be kicking yourself for going small. 22 x 22 is my minimum garage size. 200 is a deal for wrap.

 

[Old Moparz]

I get both answers here - but most do not - the vinyl seems to have trouble expanding and contracting without rippling with the wrap under it -

there are even a lot of houses here where they do not put the wrap under vinyl - I noticed when the tornadoes came theough a couple of years ago -

I would ask the guy putting the vinyl on if he has a way to put the wrap on without causing trouble for the vinyl.

I left the wrap off the outside and have the moisture barrier inside - that is the way my builder does them, not sure which is best.

If vinyl is bubbling it's likely that it has nothing to do with the wrap behind it. I've seen bubbling & it's due to either being nailed too tight to the wall so it can't move while expanding, or the panel is cut too long & it's tight in between whatever is at either end such as the j-channel at a window or a corner post.

My vote is to do the wrap.

 

[tonysellscars]

My garage is going to be a 36 x 30 with 5/12 pitch.

Estimated cost is around $21,900

It will have (5) 3x4 vinyl windows and 2 wash drains. Dimension shingles. It will have (2) 12x8 metal overhead insulated doors w/glass and (1) side door w/ 9 lite glass. Also, frame hole for A/C unit and water pipe insert for water later on when i do.

I have a 41 inch drop from one corner to other so my concrete was much higher due to the slope in my yard.

Oh yeah, I decided to go with 9 foot walls also.

I am having new vinyl installed on my house also to match my garage and house together at an extra cost of $5,100.

Grand Total Project cost $27,000

 

[eastbaysubaru]

Wrap.

"An ounce of prevention is worth a pound of cure".

-Brian

 

[Kevin C]

Wrap and a drain plane or draining type wrap.

http://www.energyvanguard.com/blog-building-science-HERS-BPI/bid/59518/A-Building-Enclosure-Double-Disaster-Control-Freaks-Missing-Again

 

[f150skidoo]

would'nt build a building with out typar/ tyvek on it.

 

[Cobra6]

If vinyl is bubbling it's likely that it has nothing to do with the wrap behind it. I've seen bubbling & it's due to either being nailed too tight to the wall so it can't move while expanding, or the panel is cut too long & it's tight in between whatever is at either end such as the j-channel at a window or a corner post.

My vote is to do the wrap.

different issue - it will warp and bubble with or without the wrap -
the big isse in humid areas is the sweating and warping -Like Kevin said - do it right with a drain plane and draining wrap -
I might have spent that much if I was building a climate-controlled shop, but it is a garage and I can heat it or cool it in an hour or so.
And - with one whole side of my building being garage doors anyway - not sure it makes a difference to justify any costs.

 

[ForceFed70]

In my area it's code to wrap or use 15# felt. I'd have done it regardless of code requirement tho.

 

[oldmxracer]

Wrap it !!

 

[ddawg16]

If you think there is ever a chance you might put drywall up inside....you would be an absolute full to not wrap.

 

[dbonne]

Wrap it!! You are too far into it not to do it right!

 

[tcianci]

Vinyl siding is as close as you can get to having no siding at all in terms of water intrusion. Use a wrap. Guys here that have read my rants before know my hatred for Tyvek due to the building failures I have seen from the product. Other wraps are not as vapor permeiable as Tyvek and would be a better choice. My go to product is still 15 lb. felt. Others have mentioned a drainable wrap or a rain screen product. Both of these products were developed to address the fact that lots of water gets in behind vinyl siding jobs. IMHO, they aren't needed because the vinyl is loose enough on the building to let wind driven rain escape. But that's just me. But by all means protect the sheathing with something before you apply your sidewall finish.

 

[rockchucker]

I would wrap it. I was taught by Pops to use 15# Felt. Since it is overlapped every <36" it will breathe enough to be underneath just about anything and it will outlast the guy that puts it up if it stays dry.

Now that Technology has given us the ability to manufacture breathable wrap I think it is just as good when used PROPERLY! One of the HUGE mistakes a lot of people make is relying on it as a weatherproofing while building. I am highly against trapping moisture inside of anywhere during the building process. This is an obvious no-brainer for many reasons. I think a lot of the failures from Tyvek are caused by the user. Plain and simple user error. If your Sheathing is absolutely drenched with water and you go wrap the house with Tyvek then install Siding on top of it you are going to trap that moisture inside. OSB and Tyvek are not impervious to the weather. The longer buildings sit outside in the weather and moisture/rain with either of these products exposed, chances for mold exponentially get out of control.

Of course this is just my 2¢.


Wrap it and install the Siding while keeping the Sheathing/Subsiding dry.

If it starts to rain in the process some painters plastic or 6mil Black that you can reuse is your best "go to" for keeping things dry. I like to keep things dry instead of waiting for them to dry later.

 

[CNGsaves]

Wrap . . . . do not even think of building anything without wrap.

Also, this tells you that contractor suggesting no wrap is gone . . . throw that quote away and don't consider using him.

 

[5lima30]

Yes, wrap it. That way when you lose some siding to a wind storm, etc. it will hopefully keep water out of your garage. (Don't ask how I know this )

 

[OccupantRJ]

i went old school with 15# roofing felt on the walls under the vinyl siding. I am with Tianci on this method.

 

[Fredartic]

http://www.budgetpackaging.com/garagekits-barns.html

Check this. Maybe you can save a little...