Replies

1. 
   Guest_ | May 19, 1999 07:17am | #1

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   Hi Eric,

   One is a cadillac and the other is a skateboard.

   Gabe

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   Guest_ | May 19, 1999 07:50am | #2

   *??

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   Guest_ | May 19, 1999 09:17am | #3

   *Eric, the asphalt shingle is designed to lay flat and seal... by bending them, you're defeating that design. Go copper, w-i-d-e copper at that, use a full 36 inch lap of ice & water shield, form a ridge down the center of the copper (a "standing seam") and affix the copper to the sheathing with copper nails applied 1" from the edge. Apply the felt to within 6 inches of the center... do not use any staples on the copper... shingle to within 4 inches of the center seam... hand nail the shingles that lap onto the copper with copper nails ONLY!Consult a roofing book for forming the seam, and any other questions you may have.How's that skateboard Gabe?

1. 
   Guest_ | May 19, 1999 03:54pm | #4

   *Hi GeorgeCan't tell you the number of roofing jobs that have been blotched by people trying to weave shingles.Ya got to love a proper copper installation. I agree with your installation guide.Besides I'm too old for skateboards, I like inline skates though.Gabe

2. 
   Eric_H | May 19, 1999 06:27pm | #5

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   Follow-up Question: My builder went with the woven shingles after learning that the restrictions in the subdivision do not require exposed valleys as we had at first thought; the builder simply neglected to ask whether I wanted the exposed valleys regardless. I caught the situation after much of the valley work had been done on this 4,000 sq ft plus house. I have told them to do it the way we originally discussed, with the exposed valleys and copper, even though it causes disappointment all around. And, because I want a good relationship with the builder and the roofer, I have offered to pay for the cost engendered by the fix. My question: Am I causing myself any new problems by having the work redone, such as all the nail holes in the plywood, in the shingles, whatever?

3. 
   Guest_ | May 19, 1999 10:09pm | #6

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   Hi Eric.

   Assuming (and there's no reason to think otherwise)that your roofer is well qualified, there will be no problems with modifying the valleys.He will have to open up the area to allow for the membrane and copper but overall this will be minor.

   Gabe

4. 
   Eric_H | May 20, 1999 02:57am | #7

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   Thanks to you and George. It is not a fun situation, and it helps to hear my proclivities have a rational basis. Eric.

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   Eric_H | May 20, 1999 04:59am | #8

   *Follow up question: What gauge valley copper is appropriate with a 40-yr fiberglass shingle roof?

5. 
   Guest_ | May 21, 1999 09:57am | #9

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   Eric, call the local yards and find out what's the heaviest readily available. The standard for flashing per the Copper Developement Association (http://Architecture.Copper.Org) is for a .0216 inch (0.55mm) thickness.

   Don't feel too bad about the unweave... as Gabe said, weaves are prone to leakage way sooner than the rated roof life.

6. 
   Eric_H | May 21, 1999 09:57am | #10

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   What are the pros/cons of exposed valleys with copper vs. woven-shingle valleys? Using 40-yrs with 15 lb felt and ice shield.