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Old 04-10-2008, 09:41 PM   #1
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new at this can any one tell me how to figure out how many bundles i need my garage is 51by27

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Old 04-10-2008, 10:40 PM   #2
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multiply 51*27=1377 add 10% to be safe.Comes to roughly 15sq.Depending on type of shingle,where I'm from most of the basic shingles are 3 bundles per sq.15*3=45 bundles+2 bundles ridgecap(3tabs)+starters

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Old 04-10-2008, 11:52 PM   #3
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Quote:
Originally Posted by sox23 View Post
new at this can any one tell me how to figure out how many bundles i need my garage is 51by27

Is this a ground plane footprint measurement or did you actually measure from end to end from one gable to the other.

That reminds me.....Is this a gable style roof or a hip style roof?

I presume the 51 foot measurement is the entire length of the roof, but that does not seem proportionate to the 27 foot measurement, unless that is one heck of a long and skinny garage.

Where I come from, that would be called a tunnel.

So, is the 27 foot measurement from the gutter/eave edge up to the ridge line, or is it from the gutter/eave edge, all the way over to the mirrored opposite side?

Depending on the style of roof, ie; Hip or Gable, will dictate how much true and actually used shingles you will need for the accessories.

If, in fact, it is a Hip style roof, please measure the entire length brom bottom corner to the apex where it intersects with the ridge line and provide that measurement and also then, measure the length of the ridge line too.

Ed

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Old 04-11-2008, 12:39 AM   #4
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In my mind I was picturing just a 2 sided garage 13.5*51 on either side.All he asked for was amount of bundles.I was just presuming it wasn't a hip style roof.
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Old 04-11-2008, 01:02 AM   #5
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Doesn't 51 feet long seem awful long and narrow for a garage though?

I just want to be certain with the info from the OP, so he isn't erroneously mislead, by accident, otherwise your take-off is on the spot, or close enough.

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Old 04-11-2008, 01:10 AM   #6
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Does seem like weird dimensions.But nothing surprises me anymore.Pretty wild those ocean wave roofs,we don't have those out here,that I know of
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Old 04-11-2008, 01:15 AM   #7
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They are not common here either. I only know of less than a handfull, in 30 years of roofing and driving around in all sorts of neighborhoods in the Chicago area, all over the place.

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Old 04-11-2008, 01:19 AM   #8
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Have you done one?If so how do they build up the bottoms for that effect?How do apply the rows,looks like wherever you want
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Old 04-11-2008, 01:48 AM   #9
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Yes I have.

Please see Post # 12 of this thread.

http://www.contractortalk.com/showthread.php?t=37277

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Old 04-11-2008, 01:59 AM   #10
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Thats an awesome house,nice work.
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Old 04-11-2008, 09:12 PM   #11
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27 is to the ridge line
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Old 04-11-2008, 09:19 PM   #12
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a friend came over today and measured he said i need 7 1/3 sq/shingles and 1 bundle of starter strip/1bundle hip&ridge what would the measurements be
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Old 04-11-2008, 10:14 PM   #13
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So what are the measurements?If it's 51' long,you need more than that.Without measurements,we can't tell you nothing
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Old 04-11-2008, 10:16 PM   #14
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If you are accurately conveying the measurements and the description, your friend is way, way, way off.

Are you sure it is 27' from one gutter eave edge straight up horizontally to the ridge?

Or, is the 27 foot measurement starting from one sides gutter eave edge, going up and over the ridge and then down again to the opposite gutter eave edge?

Either way, 7 1/3 square is way too short. Although, 7 2/3 square is pretty typical for most detached gable garages we do roof.

51 feet x 27 feet = 1,377 sq ft on each side x 2 sides = 2,745 sq ft surface area. That right there, not counting for the starter strip shingles, the rake edge bleeder strip shingles or the ridge cap, is already 27 2/3 squares.

Even if you gave the wrong description of what was measured and really meant to say 27 feet up and over total, that would be 51' x 27' = 1,377 sq ft total surface area, not including the starters, bleeder strip and ridge cap. That is 14 squares plus the accessories.

For the larger scenario you need the following additional amount of shingles.
Eave edge Starter shingles and Rake edge bleeder strip shingles = 210 feet divided by 81 feet = 2.60 bundles of 3-tabs, meaning 3 bundles really, which is 1 square.

For the ridge cap you would need, 51' divided by 33' = 1.55 bundles, which is actually 2 bundles, or 2/3 squares.

Accessory Shingles Needed:
Field area = 27 2/3 squares
Starters/Bleeders = 1 square
Ridge Cap = 2/3 squares

Total = 29 1/3 squares

Most houses I do are less than 20 squares, so, unless you have a long barn-like garage that looks like a covered bridge, you misstated your numbers dramatically.

This is just one of the reasons, that when a home owner calls in for an estimate and says they know how many squares that need, it is absolutely essential, even a vital necessity, to allow the contractor who knows how to properly measure a roof, to come out and do their own measurements.

Even with the figures I calculated for you, another guy would come up with a different figure.

None of those calculations even made an allowance for any sort of a waste factor due to unuseable shingle cut-offs or other types of necessarry waste.

So, is it the 7 2/3 square or the 29 1/3 square version?

Ed

Last edited by Ed the Roofer; 04-11-2008 at 10:19 PM.
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Old 04-13-2008, 10:17 PM   #15
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I come out with 15 1/3 sq,with measurements as stated(including waste)sounds like his ridge is a clerestory(where the ridge would be even with the back wall)with onle one large roof section
WHERE`S THE PICS ????

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