Increasing head lap on salvaged slate

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Author Message   Dean B. Posted on Tuesday, April 18, 2006 - 08:32 am:        Great message board. Have 12"x24" beveled slates salvaged from large barn. I'm re-using them on my smaller barn (62'x20' roof dimension on each side) but want to increase the head lap to make the exposed slate area smaller. Slates are better proportioned to roof and look better with 4" or 5" head lap. Existing holes are standard 3" head lap and attach just above the slate below. Increasing headlap means making new holes either in the top slate or going through the bottom slate. Suggestions? Thanks...   slateman Posted on Tuesday, April 18, 2006 - 09:03 am:        I'd cut them down in length so that a 3" headlap is maintained. They'll lay better I think.   Barry Smith Posted on Tuesday, April 18, 2006 - 10:42 am:        Yes, I agree.   mjh Posted on Tuesday, April 18, 2006 - 03:21 pm:        A 24" slate will easily take a 4" or 5" headlap without affecting how it lays. Measure the holeing position from the tail of the slate, for a 4"lap the measurement is 14 1/2" and for a 5" lap it will be 15".   Dean B. Posted on Wednesday, April 19, 2006 - 07:02 pm:        Thanks for the responses. Sounds like punching new holes is easier than trimming (I have about 25 squares of slate). If I do trim, anyone have access to a foot or powered slate trimmer? Trimming all those with my hand slate cutter would take forever....