Replies

1. 
   MikeSmith | Jul 15, 2005 01:16am | #1

   hey, Mike...

    Perfection is a  Red Cedar , leastways, they always were to me..

   one way to tell.. a common WC is 16" , either EXTRA....or   CLEAR.. ( or  #2, which you don't want

   a RC is 18", usually a #1 Perfection, commonly R&R ( Resquared & Rebutted )

   RC is a straight grain.... WC is a wild grain

    

   also... if they are sawn, they are shingles..

    SHAKES have at least one face SPLIT  ( they used to be split with a FRO, a wedge aith a handle on it... drive the wedge in, grab the handle, give it SHAKE and the "shake " would split off the butt

   Mike Smith Rhode Island : Design / Build / Repair / Restore

   
   

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   Edited 7/14/2005 6:19 pm ET by Mike Smith

2. 
   doodabug | Jul 15, 2005 02:15am | #2

   Northern white is weaker than eastern red. White cedar is one of weakest, lightest-weight woods in the USA.

   Eastern red:specific gravity is 0.47 61000 psi

   Northern white; specific gravity is 0.31 45000 psi

   Western red cedar 24 lbs per sq ft

   Eastern white cedar 21 lbs per sq ft

   Decay resistance is just as good but strength is much lower.

   Quoted from Woodweb not my memory.

1. 
   Piffin | Jul 15, 2005 05:59am | #3

   You don't need strength in a cedar shingle or shake so that info is meaningless. If you were framing the rafters with cedar, then strength would mean something.Specific gravity has more to do with density and that translates to water repellancy to some degree.Red cedar has more volatile and aromatic oils in the cells which translates to rot resistance, so red is less likely to rot.I'm like mike - I have never heard of a white cedar perfection. Every perfection I have ever seen was red cedar."Someone" probably saw some sapwood in the product and since that portion of the tree is lighter than the red heartwood, it looks much like white cedaar. So he assumed and took on the role of inspector without knowing what he was talking about. 

    

   Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

1. 
   doodabug | Jul 16, 2005 01:44am | #4

   Fartherhome said his supplier called them white cedar I think. According to woodweb rot resistance is the same. Every perfection I have seen is red too.

   The world is full of worthless information.

1. 
   Piffin | Jul 16, 2005 04:26am | #5

   woodweb is an excellent site, but no-one ios perfect all the time and lab tests don't always agree with field experience. 

    

   Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!