The top edges of the slate are trimmed to form shoulders.
How to repair a slipped roof slate.
If the slate has started.
To replace an isolated slipped slate if the slate has twisted rather than completely slipped down the roof this indicated that only one fixing has failed.
Tile and slate fixing procedure with roofing tiles it s common practise in large parts of the uk to fix every third row of tiles with clout nails starting at and including the bottom row every third row after that including the top row and they should be nailed with either galvanised steel aluminium or copper clout nails.
Many slipped slates due to the original nails now rotting away completely strips of lead approx 12.
This is a specially designed tool which slides under the tile.
To remedy the effects of slates or tiles reaching the end of their life span the roof should be stripped down to the rafters and a new underlay should be installed and then rebatten and finally recover the roof.
If the slate has started to flake away and thin around any of the holes this.
Quick video i made when i was fixing the roof last week.
Examine the fixing holes in the slate.
Lead bib slate repair if the roof hasn t got too many mistakes a good method of repair is the lead bib it s simply a section of code 3 or 4 flashing lead cut large enough to sit under the faulty slate or bad overlap to make it waterproof and the repair invisible.
You ll need a tile ripper.
This will pull out or snap the retaining nail.
You hook it over the retaining nail and either pull down sharply or use a hammer.
Slates or tiles reaching the end their life.
Normally friction alone is enough to hold the lead bib in place.