Stone slate batten gauge help!

[coopersim]

I'm after some help, a roofer has provided me with the batten gauge after I supplied details of my roof.

I've managed fine up to the point where there's more than one course and then my brain has given up.

Can someone please tell me what measurement from the eaves up to each batten where there's multiples, or just tell me how the heck to work it out please.

I've tried measuring down from the next batten up and up from the next batten down and neither seems to look right, I've even offered up slates on the roof in an attempt to figure it out!

Thanks,

Simon

 

[noseall]

I'm after some help,

Surely the important thing to work out first is the regional exposure, the pitch of your roof and the recommended headlap.

If say the recommended headlap is 80mm, then you subtract this measurement from the length of the slate then divide the remaining amount of slate in 2. This is your gauge. The starter batten position is dictated by the (gutter) overhang past the fascia. The eaves batten sits just below the starter batten.

 

[datarebal]

If it's slate then as above. If you are using something else then other system may apply . Post a picture of your product