I ran into a poster on usenet who claims that rosin paper can be used under siding in lieu of felt or tyvek. He says that it works fine as long as you get it covered the same day. Anyone else seen this? I only use rosin paper to protect floors while working over them, and have never seen it under siding of any kind.
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I've never heard of it, but that doesn't mean somebody isn't doing it. I'll stick to using it on floors. I also use it under wood floors.
Greg
Edited 2/1/2004 6:32:53 PM ET by gwerner
I've torn off lots of old sideing Lap and shingle both with nothing but resin paper under it.
Plenty of water staining on the wood under it though.
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I actually saw an episode of TOH recently where they were putting fiber cement over what appeared to be red rosin paper. I missed the beginning, so I'm not sure if that's really what it was.
Bob
My 90 year old house has rosin paper underneath the shingle siding that still appears to be in decent shape, from what I've seen when I've made repairs to the shingles.
Did some work on a shed addition a few months ago. The addition was built in 1919. I know because that's the date of the newspapers they sheathed the house with.
I hope I don't get this wrong, but one of the posters here, David Thodal (?), recommends rosin paper under siding.
Look at it from two points of view...local code (if applicable) and the siding manufacturer's installation recommendations (if you care).
I'm still of the "usually tar paper/occasionally spun poly" mindset for siding and save the red rosin paper for the floor.
I'm pretty sure that's common practice west of the 100th meridian, where the land changes from green to brown. Whether it's a good idea is perhaps another question. I want a drainage screen that actually repels water.
Andy Engel, The Former Accidental Moderator
I have seen red rosin paper under clapboards around here. (As I recall, Norm Abram did it that way on his own home. He wrote a book on his dream home, maybe 10 years ago.) I'm not sure what good paper can do other than block a little air flow. If any water gets behind the siding, it's worthless. I worked on a house last year that had paper, and water got between the siding and corner boards. The paper provided no protection at all and the ants and fungi had a field day. If anyone insists on using paper, I hope they use felt on the corners and around doors and windows.
Al Mollitor, Sharon MA
Seems very common around New England. Does not appear to work very well though. Plenty of water gets through, and it disintegrates over time. Have not seen it used on new structures in my lifetime. Not sure when it was popular.
I did see that TOH episode where they used it. If I recall correctly, they were using it on SIP walls. Not sure of the rationale there.
I prefer felt with a rainscreen design myself.