Typar or Lowes Housewrap

[peteh2833]

Anyone have any thoughts on this. Typar or Lowes Housewrap?? The Typar is $119 for a 9'x100' roll plus shipping and the Lowes wrap is $98 for a 9'x150' roll. The Lowes wrap is UV stable for up to 12 months, at least that's what they say. Pete

[glenn kangiser]

PEG recommends the Typar over the house wrap.  I recommend a rain screen wall if you use either of these rather than felt.  Minimize your chances of mold and in wall water problems destroying your house that way.

[peteh2833]

If the siding wont be installed for a longer period of time, what would you recomend???

[MountainDon]

Longer than one year???

Two layers of #15 building paper. Well secured, maybe with battens over the lap joints.

[peteh2833]

I got 4 rolls of Typar off of Ebay for $60.

[John_M]

I know it's been asked a billion times...but I'll ask again...

rain screen if you use tyvek but don't have to use rain screen if you use tar paper?

Is it ok to use 30# paper also?

[MountainDon]

Depends...   

The article leaned towards the use of tried and fully known building paper (tar paper) along with a rain screen construction.

Tar paper has the advantage of it's natural affinity to wrinkle when wet; that helps with allowing any water behind the siding to drain, but the 3/8 rain screen spacing is more of a guarantee that drainage will occur without fail.

I suppose the amount of rainfall could be considered as a part of the equation when deciding on whether or not to do a rain screen treatment.

I don't think there's any downside to #30 other than twice the cost. Two layers of #15 might be better.    FWIW, an old stucco guy told me that when doing a quality stucco wall two layers of #15 paper is the best for that application.

[PEG688]

Depends...   


I don't think there's any downside to #30 other than twice the cost.

Two layers of #15 might be better.    FWIW, an old stucco guy told me that when doing a quality stucco wall two layers of #15 paper is the best for that application.

Depends yes it does.

I asked at the lumber yard this past Monday and the cost per roll is almost the same for 15 lbs as it is for 30 lbs for some reason . There was some talk about a 'big roll'  small roll amount of squares covered , so there may be some discrepancy in that 'almost the same ' $$ I didn't have time to ask 'all the detailed ' questions as to why. 


IMO 15 lbs is fine for side walls behind siding  30 lbs is for under comp or metal roofing , shake liner 18" wide rolls of felt I think is a bit thicker than 30 lbs felt , it's used for under shakes on a roofs , and I mean shakes NOT wood shingles which also can be used on roofs which require NO felt used as the shingles need to dry out and the felt effects that process. The difference is shingle when use don roofs are layed 5" to the weather so they have what called triple coverage , shakes are layed with about a 11" exposure , so a little less than double coverage.

Thats TMI more than likely .

BUT for side wall 15 lbs felt under siding is fine , 30 lbs is bulky , harder to fold around corners , inside and out , it tears under it's own weight when hanging as it does on a side wall pulling and or tearing the staples out.

On coastal Oregon they spec 15 lbs felt , a rain screen wall would only make sense in very wet climates and it brings a whole new mess of details into play , flashing that are not standard , issues with vinyl windows and how recessed that's become , and the list goes on .

Hundreds of thousands of houses have been built without rain screen walls   , the ones that fail are due mostly to installation errors at flashing , or lack there of , at doors and windows . Adding the rain screen wall stuff will exacerbate those details and failures. IMO , YMMV.   

[MountainDon]

I asked at the lumber yard this past Monday and the cost per roll is almost the same for 15 lbs as it is for 30 lbs for some reason . There was some talk about a 'big roll'  small roll amount of squares covered ,

I just bought several rolls of #15 and #30. Both priced exactly the same, which BTW is a lot more than it was a year ago! Oil!!  IIRC, a year ago a roll was $13.50; I just paid $23.75     The #15 is 432 sq ft per roll, the #30 216 sq ft. I can't imagine hanging the #30 on a wall; twice the weight per lineal foot.

[rdpecken]

I've been impressed with the Lowes houswrap we used on our Little House.  It went on in November of last year, and was exposed to Arizona high desert sun and wind for 6 months before we got the siding on to cover it.  There were no rips, tears or anything bad.  We still had to use a utility knife to cut it when we installed the windows.
The main thing is to make sure you install it with the "Lowes" emblem upside-down to make sure the rain falls off Just kidding, there...

[MountainDon]

The main thing is to make sure you install it with the "Lowes" emblem upside-down to make sure the rain falls off Just kidding, there...

Does rain run in the windows if it's sideways. 

[apaknad]

i think it's plain that there's a grain for the rain

[rdzone]

Just for informational sake.  Lowes housewrap is made by Pactiv, the makers of Green Guard housewrap and stays UV stable for up to 12 months.  I did some research prior to buying the lowes wrap that I am using on my cabin.  I haven't had any problems with it breaking down at all. Pretty tough stuff.

[John_M]

I also used the Lowes wrap on my cabinand it has worked well for over two years.  I do plan on tearing it down and using the felt paper for my siding.  It was a temporary fix!!