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  1. #1
    Bronze Member Putter's Avatar
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    Dec 2010
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    Central Alberta
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    JD L120 looking @ LS i3040

    Default Leaving roofing felt exposed for a week before shingles?

    I am building a packaged house right now and have ran into delays due to the horrible weather here in Central Alberta. We should be sheathing the roof today before I go back to work for five days. Should I roll the roofing felt on? I have really worked hard to keep the 5/8" sheathing dry even thought it has rained every day this month here. My question to you guys would be will it be better to let the OSB sheathing sit in the elements or cover it with the felt and let that get wet?

    Thanks.

    I will start a new thread on the build later,with pictures of course, just no time right now.
    Last edited by Putter; 06-17-2011 at 09:55 AM. Reason: spelling

  2. #2
    Super Member
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    Cedartown, Ga and N. Ga mountains
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    1998 Kubota B21, 2005 Kubota L39

    Default Re: Leaving roofing felt exposed for a week before shingles?

    Get the felt down. Here you will see a place dried in with felt and left that way for weeks before shingles. Wind is normally the biggest problem with felt left exposed. The plastic cap nails do a better job against wind than staples do.

    MarkV

  3. #3
    Super Member clemsonfor's Avatar
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    Greenwood Co., SC
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    Yanmar YM2000

    Default Re: Leaving roofing felt exposed for a week before shingles?

    Dosent the stuff turn in to a wavy mess when wet, does it go back flat when dry? it must or if not is not an issue cause you see tar paper rained on all the time? OSB is water resistant and has a water resistant glue. NOT water proof though.
    YM2000. MF dirt scoop,4' Jbar bushhog,boompole, LMC 12-16 disk harrow, 4' Atlas boxblade (with rippers). 1980 chevy K10,1990 ford ranger 2wd (285K miles),1997 saturn SL2 (twin cam!!),2001Toyota Higlander
    1986 Cobia 177 sunskiff w/1981 Johnson 60 hp
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    Troybuilt 4 cycle & Echo 2 stroke,cold natured(need carb rebuild),MS390 Stihl, Northern tool pressure washer, mixes water into the oil in the pump(now dead, motor on a tiller). 5000 watt generator.

  4. #4
    Veteran Member
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    Jun 2010
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    1,352
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    Myrtle Creek, Oregon
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    Kubota l3130

    Default Re: Leaving roofing felt exposed for a week before shingles?

    If you have to tear the tarpaper off and re-do, small loss. Tarpaper is cheap. Putting down the felt is known as "dry sheathing", and is a common practice in the trades. If you are in a windy area, forget it.

  5. #5
    Super Member radioman's Avatar
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    Ontario, NY
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    Kubota BX24

    Default Re: Leaving roofing felt exposed for a week before shingles?

    It depends, any more rain coming up? Do you think you will get winds? It doesnt take much for wind to blow off the paper. How big is the roof? is it simple roof? or bunch of dormers? Most likely you won't have the bundles of shingles up there to hold it down since it will be up there for a week and sun is bad for shingles when its still in pacakage. If you still have the lumber wrap your wood came in, you can use that for tarp and weigh it down if you have enough. If there is alot of rain still to come, I'd use plastic or tarp or whatever you have instead of tar paper. The tar just dries out too easily when exposed to the sun and loses it water resistance.

  6. #6
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    jinman's Avatar
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    Texas - Wise County - Sunset
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    Default Re: Leaving roofing felt exposed for a week before shingles?

    If I thought I was going to leave the paper down for awhile without shingles, I'd use 30 lb felt instead of 15 lb. It's not that much more expensive, but it sure is tougher and will resist wind damage much better. Tar paper is remarkably tough. We put some down between rows in the garden to inhibit weeds and it is not ripping or tearing when we walk on it. We've had several rains and 100+ degree days, but the tar paper is still doing its job.
    Jim


  7. #7
    Elite Member
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    Default Re: Leaving roofing felt exposed for a week before shingles?

    Supposedly, synthetic felt can be left exposed for something like 90 days and is more tear resistant than paper felt. It is lighter and comes in larger widths, too, so it is easier to handle.

    The guy across the street from me had his roof exposed with synthetic felt for quite some time over the winter, and so far as I know, didn't have problems.

  8. #8
    Platinum Member
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    Aug 2005
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    Saltspring Island, BC, Canada
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    Kubota L3130HST

    Default

    Tar paper will wrinkle. Consider spending a little extra on something like Novaseal.

    http://www.intertapepolymer.com/Prod...s/default.aspx

  9. #9
    Platinum Member
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    mountain valley near Tahoe
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    Michigan 55A, Foton 254

    Default Re: Leaving roofing felt exposed for a week before shingles?

    Greetings, Cover it with felt! I had a delay of 3 years with 30# felt on the roof before I was able to put the asphalt on, I now have metal. It was 25 years plus before I put the metal over the asphalt shingle.

    Richard

  10. #10
    Veteran Member
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    Dec 2007
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    Location
    Eastern Ontario
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    Jinma 284(Spirit fel), MF 135 (MF200 fel)

    Default Re: Leaving roofing felt exposed for a week before shingles?

    Are you putting down ice and water shield too? Expensive but it goes down fast and nothing bothers it nee a coule of rows of it at the eaves and valleys anyway -JMHO

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