Underlayment

Has anyone seen this type of roof underlayment? It’s paper…Not felt paper, just paper.

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never seen it up here. Is it wax coated or something to keep it water repellant?

It’s just paper. It’s crazy. I’ve never seen anything like it.

Looks like a Sisal Kraft Paper. Mostly used for wraping.
There was a type of reinforced Sisal Kraft paper I used many years ago that was waterproof and laminated with asphalt layer in the middle. Used as a moisture barrier under concrete floors, but the one pictured is not that. :slight_smile:

Looks like Red Rosin paper. Light weight asphalt between two layers of paper typically used as a moisture barrier under hardwood flooring (wood frame construction). Guess the homeowner saw “underlayment” and found the price too hard to resist. As a roofing material it’s not appropriate…

Agreed, rosin paper. Usually used under interior wood flooring not shingles.

Rick, red rosin paper is a paper used for underlayment flooring, used as a slip sheet under copper standing seam roofs, used under siding years ago as a wind barrier.

Not a vapor barrier and does not haf an asphalt layer.

https://sp.yimg.com/ib/th?id=HN.608029466367036552&pid=15.1

:slight_smile:

Maybe…

http://www.national-lumber.com/products/opus_roof_blanket.htm

Are you proposing that product as to a similarity to the OP’s question?

Don’t resemble it at all. :slight_smile:

“Rosin papers is frequently used as a layer between the roofing material and roofing felt. The rosin paper acts as a separation layer to prevent the roofing felt from sticking or bonding to any of the roof’s metal panes. Rosin paper is also used in roofing to act as a slip or drip sheet. The rosin paper stops any coal tar or asphalt from dripping into the interior of the roof or building.”

Read more: http://www.ehow.com/info_8112706_uses-rosin-paper.html#ixzz2ufjIZOua

Can remember finding something similar under some old metal roofs. Been a long time though

when you google brown paper underlayment there are products for several (not roofing) that are brown paper underlayment.

This paper was a single layer installed under the shingles on a mobile home built 2002 in southern Florida. It just seems to me to be an inferior product for this type of situation.

I was just about to ask if it was a mobile home. They’re built inside and don’t really need to have a “temporary” dry-in. So, the kraft paper really just serves as a moisture barrier.
This is common on mobile homes.

It was the only underlayment the home had. That’s what my concern was. Does not seem to be enough.