headlaps for lower slopes

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Author Message   Joe (Joe) Moderator Username: Joe Post Number: 575 Registered: 07-2006 Posted on Friday, November 05, 2010 - 11:28 am:        Read this article about flat-lock soldered copper roofs: http://www.traditionalroofing.com/TR6_flat_lock.html   Old_school (Old_school) Senior Member Username: Old_school Post Number: 538 Registered: 01-2009 Posted on Thursday, November 04, 2010 - 09:16 pm:        Put a metal roof on that low sloped area and slate from there up!   Chris (Chris) Advanced Member Username: Chris Post Number: 49 Registered: 09-2009 Posted on Tuesday, November 02, 2010 - 04:35 pm:        4:12 is really the minimum slope for slate   Bradzehr (Bradzehr) New member Username: Bradzehr Post Number: 1 Registered: 11-2010 Posted on Tuesday, November 02, 2010 - 02:08 pm:        I have a porch roof with a about a 2.75:12 slope. I am thinking that I should not use slate on it do to the low slope. Do you agree? Thanks for any input. See image. Brad   Jon Geib Posted on Wednesday, June 20, 2001 - 11:59 am:        I have a case where some roof slopes are 1:4 or 4" rise to 12" run. What is done in his case using slate roof tiles? Is the headlap increase from 4" to 5"?   Joe Jenkins Posted on Wednesday, June 20, 2001 - 07:49 pm:        The headlap should be 4" on a 4:12 sloped slate roof. However, slate roofs always benefit from a steeper slope. Slate roofs should not be walked on, and low slope slate roofs *will* be walked on - guaranteed. If it's a low enough slope to walk on, Bigfoot will be up there sometime over the life of the roof and he will greatly reduce the life of the roof by walking on it and breaking the slates. A good slater *can* walk on a low slope roof and not break it, but it takes experience. So if you can make the roof steeper - too steep to walk on - you'd be far better off. Good slopes for slate are 10:12 or 12:12, although lower and higher slopes work too.