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Old 01-01-2010, 08:49 AM   #1
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How many nails should be used, 4 or 6 per shingle?


Everyone has their own opinion about this question; do (4) nails help better than (6) nails per shingle?

My sales guys ask me if it really helps, during our sale training meetings, what do you guys think?


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Old 01-01-2010, 09:08 AM   #2
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How many nails should be used, 4 or 6 per shingle?


Not a pro, but I just followed the instructions on the package. I used 4 because I'm not on the coast and I didn't have a nailer. You're also less likely to have a seam fall on a nail with only 4 fasteners.
I'd be interested in what advice the pros on this board have to offer as to 4 or 6.

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Old 01-01-2010, 10:52 AM   #3
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How many nails should be used, 4 or 6 per shingle?


If you are confident that a fastening method meets ASTM D7158-08d for the location in which the shingles are installed, it's hard to see what's gained by improving the method.
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Old 01-01-2010, 11:11 AM   #4
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How many nails should be used, 4 or 6 per shingle?


The last shingle install I did, the manufacturer's recommendation was 4 per shingle, or six if you were in hurricane country.
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Old 01-01-2010, 11:50 AM   #5
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How many nails should be used, 4 or 6 per shingle?


Just west of the coast here. Depends on expoure to the weather. I use from 4 to 6 'depending'. Since most other rooferrs nail above 5 1/2", their shingles slide off before we have to worry about how many nails or weather.
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Old 01-01-2010, 11:57 AM   #6
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How many nails should be used, 4 or 6 per shingle?


ALWAYS follows the manufacturers instructions. Never guess or do what YOU think. If warranty is ever an issue it will come back to haunt you. Extra nailing is required among manufacturers for steep slope and high wind situations. Nailing with 6 nails in normal situation is not needed.
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Old 01-01-2010, 12:13 PM   #7
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How many nails should be used, 4 or 6 per shingle?


Quote:
Originally Posted by jaros bros. View Post
ALWAYS follows the manufacturers instructions. Never guess or do what YOU think. If warranty is ever an issue it will come back to haunt you. Extra nailing is required among manufacturers for steep slope and high wind situations. Nailing with 6 nails in normal situation is not needed.
RIght on. Better worded than I wrote.
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Old 01-01-2010, 12:30 PM   #8
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How many nails should be used, 4 or 6 per shingle?


Frank, those pics don't look like a nail frequency problem but a complete incorrect nailing pattern. It looks like the nails were positioned too high. If nailed in the correct position using 4 nails/shingle, your really getting 8 nails total including the nails from the shingle above.
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Old 01-01-2010, 12:40 PM   #9
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How many nails should be used, 4 or 6 per shingle?


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Originally Posted by tinner666 View Post
Just west of the coast here. Depends on expoure to the weather. I use from 4 to 6 'depending'. Since most other rooferrs nail above 5 1/2", their shingles slide off before we have to worry about how many nails or weather.
That answers alot of questions, what do you think happen here?

Skip nailing?

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Old 01-01-2010, 12:45 PM   #10
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How many nails should be used, 4 or 6 per shingle?


"Frank, those pics don't look like a nail frequency problem but a complete incorrect nailing pattern. It looks like the nails were positioned too high. If nailed in the correct position using 4 nails/shingle, your really getting 8 nails total including the nails from the shingle above."
Yep. They could use 12 nails here and it wouldn't matter. I watched a crew install dimensionals next door to my house. 6/12 nailed about 3" high. Guy said they always nail like that since it's the right way.

On some 4 /12's, I'll drop back to 4 nails. All others get 6.

BTW do you know why the manufacturers are so adamant about NOT removing the plastic on the backs of the shingles? It supplies about 85% of the holding power.
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Old 01-01-2010, 12:57 PM   #11
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How many nails should be used, 4 or 6 per shingle?


Does it really matter when the water just soaks through the 8-10 year old shingles anyway? I've seen this on 4-5 year old roofs. They don't really shed water very well any more. This was 4-5/12 roof. I tried to get the pics before the water could evaporate. The entire roof was like this.
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Old 01-01-2010, 12:59 PM   #12
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How many nails should be used, 4 or 6 per shingle?


BTW, in the bright sunlight, you still couldn't see a trace of light through the shingles from either side.
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Old 01-02-2010, 11:41 AM   #13
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How many nails should be used, 4 or 6 per shingle?


Tinner - I had a similiar argument with an ex employee about high nailing because he was taught thats the right and "only" way. Drove me nuts and couldn't change the habit.

How many nails I put into a shingle depends on the pitch, the type of shingle of course and the wind area. It could be four, maybe five or six.

I always tell guys that I don't care if you put 10 nails into a shingle, it won't hold up as well putting four into the proper place.

To this day, I have yet to have a blow off and majority of my roofs I only use four nails.
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Old 01-04-2010, 02:40 PM   #14
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How many nails should be used, 4 or 6 per shingle?


If there were inspections like we have here, there wouldn't be as many problems with nailing. I've seen entire roofs that guys had to come back and renail every shingle.

Asdie from the nailing in those pics, it's obvious those shingles wouldn't make it long anyhow. Light colored shingles, cheap, thin......just doesn't work, especially on a steeper pitch. Racking will give you just as much trouble. Some guys never learn until it hits them in the pocket book. Most don't care because they are gone the next day.
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Old 09-17-2012, 06:18 PM   #15
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How many nails should be used, 4 or 6 per shingle?


these are 3 tabs shingles..it doesnt matter how many nails or where they are placed. they will eventually blow off, they are worthless. NEVER use them.

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