Replies

1. 
   seeyou | Oct 06, 2003 06:23pm | #1

   What you're after is "Cedar Breather" made by Benjamin Obdyke. I've never used it. I prefer to use a 1x3 for each course installed over felt or ice & water shield. With this process, I use a metal drip edge at the eaves and shingle mould or metal drip edge at the rake, installed with a gap so air can enter. The 1x3's are installed in short lengths with a gap between them so air can circulate. I use a paslode Impulse nailer with galv nails. Stainless would be better.

2. 
   cdbeardie | Oct 06, 2003 09:52pm | #2

   Typically, 18" shingles have a 7 1/2" max exposure. If you type on http://www.cedarbureau.org, you will have a whole manual at your disposal. They also have a helpful person that can answer any of your questions. Just call them if you have questions after reading the manual. There is also a web site for "Cedar Breather", the product you're after. They also will have information and an 800 number to call. Hope this helps!

3. 
   Piffin | Oct 07, 2003 04:06am | #3

   First problem is that the minimum pitch for shakes is 4/12.

   But you say 18" so you must mean shingles instead of shakes?????????

   Installation procedures are different for both

   .

   Excellence is its own reward!

1. 
   johnharkins | Oct 07, 2003 04:37am | #4

   like Piffin says  minimum pitch for shakes  4 / 12   and even then I think that is so they can sell more of the buggers  give wood a chance a go for a 6 / 12 or more or you just give the beautiful material a bad name

   your first job is to talk the client out of using them

   you could put them up for looks and wash them down w/ bleach & water every couple of years but know that the cedar is a facade and your ice & water is the roof

1. 
   Boxduh | Oct 07, 2003 04:47am | #5

   In my opinion cedar shakes should only be used in a cold roof, skip-sheathed design, fully woven with felt paper, at a slope within the Cedar Bureau's recommendation, with good sun exposure on all faces, and never under needle-dropping pine trees.

1. 
   Piffin | Oct 07, 2003 05:04am | #7

   You are right Micro but I want to wait on commenting to installation until I am sure what he is installing. This has got to be one of the most confusing things in roofing for folks. I can't count how many times a customer called me to quote one when my site visit to estimate showed it was the other.

   Excellence is its own reward!

2. 
   Stach | Oct 07, 2003 09:27am | #9

   well John, unfortuantely there are already cedar shingles installed and the customer is set on installing cedar back on the house.  The house is a log home.  At least two thirds of this 11x43   3/12 pitch roof is over an exterior porch with three skylights.  The other third, however is right over a table with evidence of severe leaks.  To partially solve his problem, i suggested diverting the water from the upper shed dormer, in addition to replacing all of the shakes.  And, yes, the shingles are impractical on a 3 pitch, however, i cant change the pitch and im left holding the bag.  Thank God for ice and water!  haha. 

1. 
   Piffin | Oct 08, 2003 03:19am | #10

   I can accept cedar shingles on a three twelve unless there is also a lot of ice buildup.

   You've got the right idea. I&W plus cedar breather.

   Excellence is its own reward!

2. 
   Stach | Oct 07, 2003 09:14am | #8

   Thanks for the correction piffin..haha...ya i meant shingles.  shakes dont come 18"

4. 
   blues_hound | Oct 07, 2003 04:57am | #6

   I have used either a narrow crown stapler with 1 1/2" staples or even a 1/4 crown 1" staple bote worked great be sure to use plenty of nails :)