Nail length should be twice the thickness of the slate plus 1 when using a 1 roof deck.
Slate roof mistakes nails too long.
Also nails shouldn t be driven into or above the self sealing strip.
Overly long nails used to fasten field slates may blow out the underside of the roof sheathing at each fastener penetration diminishing the holding power of the nail.
This is normal especially on older houses.
Slate roof mistakes strap repairs.
Slate roof mistakes electrogalvanized nails.
Looking at a 2005 tile roof installation manual it looks like the minimum penetration of a roofing nail into roof sheathing was 3 4.
The slating nails should not be too long.
As to the chipping of trusses or decking shearing.
You should use at least four nails per shingle and raise that minimum to six on roofs with steep grades.
If a 1 1 4 roofing nail catches the edge of the sheathing it may also catch the edge of a truss and crack or chip either one.
Hip and ridge cap slates are the most vulnerable to wind damage especially on the windward side of the home and at the eaves and corners.
Slate roof central is your center hub for all things related to natural quarried slate roofing.
Slate roof mistakes incorrect saddle ridge.
Any homeowner would be horrified to find out that they need a roof repair but it is still necessary to have it done.
Slate roof mistakes nails too long.
On the other hand your roofer screwed up by using too long of a nail on your soffit over hang.
Shingles can slip down if they aren t nailed correctly or if too few nails have been used.
If you wait too long before getting a slate roof repair you could be setting it up for more problems in the long run and it will be both expensive and time consuming.
Here you can find instructions for installing a slate roof repairing and restoring slate roofs and repairing asbestos roofs and ceramic tile roofs.