You can read about starter courses on slate roofs in traditional roofing 5.
Starter course slate roof.
If the starter course is laid with the face side up the installer is inexperienced and it s likely there are additional mistakes in the roof installation.
Check roof pitch and make sure that the correct size slate and lap are used.
Used in conjunction with our standard leading edge plus starter armour starter provides extra thickness and protection between the shingle tabs of the first course of armourshake ensuring a beautiful roof appearance from bottom to top.
Small full slates at the rake edge for the s series use a 6 slate on top of the starter course as either the first visible slate or to create the half stagger of the second course install a full piece and then install successive courses with the same offset by alternating the 6 and 12 slates.
The exposure on the first course of slate must instead be.
One can tell immediately if a slate installer is experienced or not by looking at the starter course.
If the slate has been sorted and the roof marked out properly then laying the slate is straight forward.
At the eave the starters provide a simple way to cover the joints between the finish shingles in the first course ensuring complete water shedding roof coverage.
Before you run out and start chalking 8 inch lines up a roof for 20 inch slates let me remind you that the starter course first course and often second course will be chalked on a different measurement.
1 the starter course is incorrectly installed face up.
Slate starter courses.
However the recent trend is to forklift a pallet on to the scaffold and lay the slates straight out of the pallet without grading.
This is a very common mistake inadequate headlap on the starter course.
As well starter shingles have a sealant strip and when positioned correctly the sealant strip will be on the top surface and at the lowest edge of the roof.
If there are no starter shingles along the perimeter edge it would be extremely difficult to try to slide starter shingles in under the first course due to the fact the shingles are nailed along the tar line which is approximately 5 5 to 6 inches above the edge of the shingle.