Replies

1. 
   Roofer_Jim | Jan 25, 2000 07:38pm | #2

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   The manurfacturs allow racking now on three tabs but dont recomend it for laminates. There warranty is still valid however for everything exept undesirable patterns that may develop from racking.They are also concerned that some guys might skip that fourth nail when running up a collum.They call that the honest nail.I have to say most roofs in my area are installed in the racking manor. only problom Ive seen is when guys dont but them tight and you can see that joint going up but that all depends on the guy.
   Regards
   Roofer Jim

2. 
   Roofer_Jim | Jan 25, 2000 08:04pm | #3

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   I can prove to you that racking is acceptable.You can call Certainteed at 1-800-753-6142 ask them yo mail you the shingle applicators manual its free if your a contractor.

1. 
   Red_dog | Jan 25, 2000 08:33pm | #4

   *Some guys here are still using 3 in 1's, for some reason, and they rack em up the roof to get the eyes straight and to get sections of roof weather tight. Not too often do I see architectural shingles racked. They are almost always stepped up around here, sometimes as per manufacturers instructions and sometimes not. Quite often, not, on new homes. I've seen guys step them up about 2", one guy with no felt under them. They must think nobody's looking and/or they just don't care. I believe on the Certainteed Landmark wrapper it says that either way, racking or stepping, is acceptable. I like to precut the starter shingles nice and square, start out the left side of the roof, and do most of the cutting going up the right side. If you're careful and consciensious, most people won't be able to see any pattern.Red dog

3. 
   Guest_ | Jan 25, 2000 08:33pm | #5

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   The wrappers on all composite shingles dictate the stairstepping method of laying shingles or the warranty is void.
   When did the up-the-roof-stacking-method begin to take precedent and why have the manufacturers not taken issue w/ this faster method of installing their products? This method is very prevelant in the midAtlantic region. In fact I have seen nothing written in any text book or article espousing this faster method as being acceptible. A trained eye can even see the stacking method lines in a completed roof. Any real experts out there that have communicated w/ the mfgs. about this?

1. 
   Guest_ | Jan 25, 2000 07:28pm | #1

   *The racking method is VERY common here in Ohio also.I generally can pick out the racking pattern OR the stairstep. Both are usually equally obvious.Actually if you rack with a 4" offset instead of a 6" offset,sometimes things will blend together much better than using the stairstep.good luck All,stephen