Stainless Steel Slate Hooks or Copper Slate Nails?

[JamieK]

Hi There,

 

We're soon to have our slate roof replaced.

 

The current slate roof is 100 years old. House was built in 1923.

 

The old slates are being removed and replaced with new slates (300mm x 600mm, 7-9mm thick)

 

Our roofer has suggested using stainless steel slate hooks (grade 316, black coated).

 

He feels they're easier to install, hold the slate more firmly and slates can replaced more easily.

 

Our roof has numerous valleys and quite steep pitches down the gable.

 

Which would be the best option to hold the slates firmly in place for another 100 years?

 

Slate hooks or copper slate nails?

 

Are any of the above more prone to corrosion or other issues?

 

The slates have pre-drilled holes.

 

Thanks

 

Jamie

 

 

[nod]

I’ve slated the last two of our builds 

I do like the hooks But never seen them used local to me so went for nails again 

Your roofer will still have to use nails on the valleys Due to lack of fixing space 

 

[scottishjohn]

when doing the vallies I questioned my roofer 

why? he was cutting the lead into 1,5m lengths --

apart from being easier to do a good job  the main  reason was  it allows for expansion  in the summer 

,just overlapeed by 150mm each section 

 other thing i noticed was there was no double row at bottom at gutter,which you normally would have to do  ,

they used a thin grp flat sheet which went up past first real over lap --very neat and makes a good edge at bottom

[joe90]

On my build they used hooks for the same reasons above, frankly you can’t see them anyway and I like the fact slates can be replaced much more easily if required.

[Mr Punter]

Hooks work really well and hole the bottom of the slates.  They will still need copper nails in a few places.