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07-07-2012, 08:25 PM   #1
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## Shingles needed for hip roof

I'm totally lost trying to figure out the amount of shingles I'll need to reshingle my shed roof.

I've figured out I'll need 44 linear feet of ridge shingles, and 60 feet of drip edging. But how the heck do I figure out the square footage of this roof?

07-07-2012, 08:37 PM   #2
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Just measure across the roof from the midpoint of two hips, and multiply that times the rafter lenght.

 07-07-2012, 08:38 PM #3 Pro Slate Roofer     Join Date: Mar 2005 Location: Richmond, Va. Posts: 1,622 Rewards Points: 1,060 Same on the ends. Middle rafter, longest, lenght by the midpoint measurement. __________________ Frank Tinner666 DIY Roof Help Richmond Va. Slate Repairs, Richmond, Va.

 07-07-2012, 09:04 PM #4 Member     Join Date: Dec 2009 Location: Near Cleveland, Ohio Posts: 2,036 Rewards Points: 1,902 area of a triangle = 1/2 base x height. In your case, break down the long sides into a rectangle and two triangles for each side. For the two short ends just multiply base x height without dividing in 1/2, since you have two ends. Height is one of the short two legs of the triangle. If you deduct the ridge length from the long side length, divide the answer by two, you get the length of one short leg of the triangle. You have the long leg already. Formula for finding the legs of a triangle is a squared + b squared = c squared. Where a and b are the short legs, c is the long leg or hypotenuse. If you convert your inches to feet, it's a little easier. I come up with a height for your triangles of 7 1/2'. If you break down the side, you have a rectangle of 4 1/2' x 7 1/2' and two triangles of 7 1/2' x 6 1/4'. 4.5 x 7.5 x 2 = 67sq.ft. 7.5 x 6.25 = 48.75 sq.ft x 2 = 97.50 sq.ft. 67 + 97.5 = 164.5sq.ft. That takes care of both sides. The two short ends would be 7.5' x 13' = 97.5sq.ft. That takes care of the two ends. 164.5 + 97.5 = 262 sq. ft. total. Get 3 square of shingles and you should be alright. Hope this makes sense. Mike Hawkins
 The Following User Says Thank You to firehawkmph For This Useful Post: matt151617 (07-07-2012)
 07-07-2012, 10:06 PM #5 Metal Roofing   Join Date: Jan 2012 Location: Mission Viejo, CA Posts: 563 Rewards Points: 600 You have 60' of drip edge only if your butting each pc to the next and have zero waste. I'd get 70'.
 The Following User Says Thank You to AndyWRS For This Useful Post: mae-ling (07-09-2012)
 07-08-2012, 05:35 AM #6 Member   Join Date: Jun 2011 Location: Plattsburgh, NY Posts: 247 Rewards Points: 160 Thanks all for the info. I guess I should have paid more attention in geometry. I'm shocked it'll cost ~\$500 to reshingle a simple shed. A bundle of standard shingles are \$32, 2 packs of ridge shingles are \$50/each, plus tar paper, nails, and drip edge. I think I may just go with rolled roofing. If I understand correctly, rip off the old roofing, put on the drip edge, staple down felt, then nail/ cement down the rolled roofing? Also, I have 7/8" roofing nails, are they sufficient? Last edited by matt151617; 07-08-2012 at 10:20 AM.
 07-08-2012, 10:15 AM #7 Member   Join Date: Nov 2011 Location: Hartfield VA Posts: 34,448 Rewards Points: 14,026 You need 1-1/4 nails, and your trying to be penny wise and dollar foolish. If you want the shingles to last long term, and the sheds in good shape then add some ridge venting along that peak and use architural shingles not three tabs, and never ever waste your time and money on rolled roofing!
 The Following User Says Thank You to joecaption For This Useful Post: mae-ling (07-09-2012)
 07-09-2012, 06:13 AM #8 Member   Join Date: Jun 2011 Location: Plattsburgh, NY Posts: 247 Rewards Points: 160 I was able to find someone selling 17 bundles of architectural shingles for \$350. Can I use a row of architectural shingles as a starter row? Can I use architectural shingles as hip caps? I'd like to use as many of the singles as possible and avoid buying anything else.
 07-09-2012, 06:42 AM #9 Pro Slate Roofer     Join Date: Mar 2005 Location: Richmond, Va. Posts: 1,622 Rewards Points: 1,060 You won't be able to do the ridge ths way, but you could do the hips like a dome roof is done. 3" towards windy side, 3" to the lee side.http://www.rooferscoffeeshop.com/sho...8&file=764&s=0 __________________ Frank Tinner666 DIY Roof Help Richmond Va. Slate Repairs, Richmond, Va.
 07-09-2012, 10:00 AM #10 Member   Join Date: Jun 2011 Location: Plattsburgh, NY Posts: 247 Rewards Points: 160 So if I understand correctly, for 3-tab, cut the overlap at the hip, and use it for the other side? Basically wrap the shingle over the hip and cut straight through in half matching the angle of the hip? (ie no waste) Last edited by matt151617; 07-09-2012 at 10:46 AM.
07-09-2012, 12:31 PM   #11
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No. You put the leeward side on first and go over the hip 3". Cut neatly. There will be scrap! Put the other side of roofing on and go over the hip 3" and cut neatly. BTW, these specs were put out by GAF, and GP. I assume the others agree to them too since it's like doing a valley.

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