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Old 03-05-2009, 08:42 PM   #1
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Tear off time???


Here's a quick summary of the project:
  • Total of 20 square roof area
  • Main roof (2/3 of area) is 6/12 pitch with 3 layers asphalt shingles
  • Addition (1/3 of area) is 4/12 pitch with 2 layers asphalt shingles
I've got a total of four guys including myself for the tear off. No one is afraid to bust tail and put in long hours. Can we tear off this entire roof and re-felt in two days?

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Old 03-05-2009, 09:33 PM   #2
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Tear off time???


It still gets dark early right now, at least until the soon to come time change again.

A 6/12 can still be a very tenuous slope to work on, especially if you do not work on roofs every day.

The amount of shingle grit will feel like walking on marbles.

What safety fall arrest prevention equipment do you intend on using? I certainly would hate to hear about one of your hard working, yet inexperienced friends slipping off of the roof and breaking something or worse.



You will have around 54 squares of shingles to tear-off, clean off and pull all of the remaining nails, clean off again and then install the necessarily required Ice and Water Shield along your eave edges, either 3 feet or 6 feet wide, most likely, along with installing 20 squares of felt paper and then I would assume, tarping the felt, in the event of a rain before the shingles get delivered and installed.

If you are going to upgrade the existing ventilation, there will be holes in the decking that will need to be cut out and filled in with a substantial sized piece of new decking material. Also, if you will be installing a ridge vent, the 2 sides of the paek of the roof will need to be cut out.

It is do-able, but only with the right guys and experience levels.

But, what if you encounter any additional suspect wood decking needing replacement? Tha will take additional time to correct and also pay attention to the weather reports and the actual sky itself, so you don't get caught with your pants down.

Ed

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Old 03-05-2009, 09:51 PM   #3
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Tear off time???


Thanks for giving me a few things to think about.

The main roof is a 6/12, but there is a continuous front and back porch about 8' wide with a 3/12 pitch, so there is a relatively level area prior to the steeper pitch. I don't think I'll need ladder jacks.

As far as experience, a few of us have helped with new roofs but never on a tear off.

I've got the attic gutted right now, so I can see most of the roofing boards. There is one soft area around a leak at the dormer, but otherwise it looks okay.

Looks like it wouldn't hurt for me to recruit another hand or two.
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Old 03-05-2009, 11:07 PM   #4
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Tear off time???


Just shoot for one side at a time to get it water-tight. Then you can guage your progress better to see if you should decide to gamble on biting off a bigger chunk to do.

Ed
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Old 03-05-2009, 11:19 PM   #5
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Tear off time???


I do one side at a time - but I'm solo
I also have tarps, I generally rip one side off & clean
Ice & water & any new drip edge or flashing
Then I start roofing

Shingles are around 80 lbs each on 3 tab
I had an elevator ladder attachment from a neighbor to get them to the roof
So if you can get them delivered to the roof top that will help
If you can get one side torn off then start roofing while the other side tear off is started

Bad news, good news
My last house had 5 layers on the roof
It was easy pulling the top layers up since the nails were not hitting wood
Hope you have tear off tools


Last edited by Scuba_Dave; 03-05-2009 at 11:22 PM.
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Old 03-06-2009, 07:17 PM   #6
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Tear off time???


I had to google 6/12 pitch to get an idea, but seems steep. When I did my roof, I thought I could get away without using roof jacks but was surprised how slippery the deck was after stripping everything off. I've done a roof exactly two times, complete tear off. Two layers was rough, can't imagine 3 layers. I know you didn't say you was going to hurry, but that is a big investment. Without the experience its going to be rough to do in two days.


I misread, you said just to refelt in two days, not actually reshingle.
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Old 03-07-2009, 07:24 AM   #7
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Tear off time???


Around here, I have seen a crew of 5-6 do a double tearoff, and complete new roof, with some plywood, and finish in the same day. 17-20 sq. on a 7/12 roof.

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