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Roland Graham
New member
Username: Rollythegoalie

Post Number: 10
Registered: 09-2008
Posted on Tuesday, October 07, 2008 - 08:03 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Thanks for all your replies.
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Eric Braymer
New member
Username: Braymer

Post Number: 4
Registered: 09-2008
Posted on Monday, October 06, 2008 - 04:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Hello, it depends on where you are installing it, indoors or out. If outside, does the area get wet at all or face west and get all the weather? If so, I would want plenty of headlap if you are depending on the slate to shed water. If indoors or out of the weather, I would think anything goes as long as the nails are covered and it looks good.
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Tim Dittmar
Intermediate Member
Username: Tim_dittmar

Post Number: 33
Registered: 05-2008
Posted on Monday, October 06, 2008 - 12:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

you could consider augmenting the minimal headlap with some 15 lb felt similar to the way it's used in wood shingles- it might not cause more problems than it solves- as repairs, etc. are less likely(or necessary) on a vertical surface?
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AF
Junior Member
Username: Tonyeriepa

Post Number: 18
Registered: 03-2007
Posted on Monday, October 06, 2008 - 10:14 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

I've used 1/2" headlap with 12" random-width slates on a square of vertical wall under a peaked garage roof (~1ft roof overhang; sheltered from driving rain) and so far, so good!
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Slate Affair Inc.
Senior Member
Username: Slate_man

Post Number: 274
Registered: 01-2007
Posted on Monday, October 06, 2008 - 05:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

I have done some slate siding with about 1' head lap. The only think with doing that with used slate is the shadow lines on the used slate show.
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Roland Graham
New member
Username: Rollythegoalie

Post Number: 9
Registered: 09-2008
Posted on Sunday, October 05, 2008 - 08:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only) Ban Poster IP (Moderator/Admin only)

Hi, I have the opportunity to buy some salvaged slate (from a roof in Lowell, MA) which is 11" wide by 10" high. In order to install these slate with the recommended 3" headlap, there would only be 3-1/2" of slate showing per course. I'm assuming that the recommended 3" headlap is relevant in both slate roof and slate siding situations. My question is as follows..."What headlap should be used in vertical slate siding?" Thanks.

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