makie

The bottom picture, it is not.

Shouldn't be an issue if they have welded it correctly but that up-stand should be on top of the base layer.

Just put some new holes in the slate either above or below the nail holes you have. This won't be the only course that has the issue.

Unsure, we always go over the felt in Scotland. The felt is supposed to have a slight sag so it doesn't really matter either way.

They can go under the felt, I've seen it done that way in England before.

How many guys were there? He has to pay insurance/maintenance on the van etc, liability insurance. It's easy to say it's only half an hour but you need the knowledge to do it properly and cover expenses.

It's plastic, called monarflex. It's terrible for condensation.

Where you the guy I helped find this for on reddit? 😂

Could be potential cost difference, I'd ask the roofer to give you a new breakdown of costs.

What is the size of natural slates specified v the artificial ones?

It's a Delta tile, they don't make them anymore but you can find them online on gumtree,fb marketplace etc.

It's definitely not a marley tile, your best bet is contacting a reclamation yard and providing them photos.

The lead goes directly on top of the building paper.

Chinese are awful, same as Brazilian in my opinion. Good quality Spanish like cupa H3's are extremely good.

Why would you use hallhooks on a cement fibre slate repair? That's what the copper rivets are for.