» Do it in the rain?

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  Post subject: Do it in the rain?
PostPosted: Thu Nov 02, 2006 2:57 pm 
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Hi all. New member here with first post. I'm covering a single layer of old three tab with new roofing. The new stuff is the "30 year" laminated asphalt shingle. They deliver and stock to rooftop this morning. The roofing contractor, a close friend, is scheduled to start the job this morning. But it's raining pretty steady. I'm concerned about temporary leaks from nailing over in the rain.
Advice or comments?
Thanks much.


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PostPosted: Thu Nov 02, 2006 4:19 pm 
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isnt it always raining in seattle? I wouldnt put a roof on in the rain, nor would I put a roof over another roof but to each their own.

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PostPosted: Thu Nov 02, 2006 9:37 pm 
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I agree with what is being said here. Why would you go over a roof when it will only last 15 years tops because its a second layer. No professional i know of would ever put shingles knowing its going to rain or is raining before they start.

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PostPosted: Thu Nov 02, 2006 10:28 pm 
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I have shingled in drizzle/light rain many times with no leaks. If the stuff starts coming down heavy, I have to stop and seal everything up, because it can leak if you get water actually running down the roof.

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PostPosted: Thu Nov 02, 2006 10:59 pm 
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Hi,

In the Northwest you have to roof in the rain.

I have put shingles on in a downpour. Plane was flying out the next morning. I would not tear off in the rain.

Water when it gets hot turns to a vapor. The vapor leaves.


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PostPosted: Thu Nov 02, 2006 11:46 pm 
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Thanks for the replies. Roof got stocked. Roofing crew got rained off the job. We'll try again tomorrow. The cover over was a judgement call. A tearoff would double the cost of the job, requiring resheathing as the existing sheathing is 1x8 shiplap. All the shingle manufacturers require sheet good underlayment for their warranties. I'll get 25 years of life from this "30 year" product. That's good enough for me. I'm really pro-active about maintenance of my roof. I'm taking down a medium-small hemlock (70 footer) right next to the house. Love the tree but it's a roof killer.


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PostPosted: Fri Nov 03, 2006 12:56 am 
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I would have no problem laying over the old shingles....IF, the old shingles are laying flat and they are even. I wouldn't even go to the job if it had rain in the forecast.

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PostPosted: Fri Nov 03, 2006 4:08 am 
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With a small crew 4-6 people I always plan at least two days with no chance of rain. On larger jobs I like at least three good days straight.

On new roofs I've papered and shingled while raining more times that I'd ever like to admit. I saw my father fall off a 7/12 10 years ago while papering while raining.

I've papered over ice many times but always have waited until the ice melted prior to shingling. It's funny how builders don't care about roofs being put on poorly in the Winter when inspections are close.


A couple jobs done during the Winter have resulted in popped nails all over the roof. In the past 10 years 3/4 of my roofs were stapled and I never had any popped staples. Right now I've got a roof with tons of popped nails done last Winter. Makes me want to go back to stapling, never had call backs when I stapled. Thinking the popped nails were due to either lousy OSB or roofing over wet OSB.


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PostPosted: Fri Nov 03, 2006 12:17 pm 
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dougger222 wrote:
A couple jobs done during the Winter have resulted in popped nails all over the roof. In the past 10 years 3/4 of my roofs were stapled and I never had any popped staples. Right now I've got a roof with tons of popped nails done last Winter. Makes me want to go back to stapling, never had call backs when I stapled. Thinking the popped nails were due to either lousy OSB or roofing over wet OSB.


OSB is crap.

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Metal roof waterproofing Commercial and Industrial Polyurea membranes, Insulated Roofing systems. Insulation.
Residential roof repair. Illinois IL


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PostPosted: Fri Nov 03, 2006 2:24 pm 
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houses in tampa bay get wet all the time.
the plywood gets rained on for days when building.
the whole building gets rained on for days, when building.
reroofs are done in light rains often.
as long as its not poorin, you can lay shingles in the rain. they still last 20+ yrs.
were im at anyway.

gweedo.


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