Nu Lok - slating system

Western_sean

Hi

Has anyone here had any experience with this slating system, ( Nu Lok )? If what do you see as the advantages / disadvantages?

Were you happy with it - from the contractors and homeowners point of view?

Thanks for your help

Slates

Western_sean wrote: »

Hi

Has anyone here had any experience with this slating system, ( Nu Lok )? If what do you see as the advantages / disadvantages?

Were you happy with it - from the contractors and homeowners point of view?

Thanks for your help

The BIG disadvantage with this system is that it is not certified for use with slates, The cert is for use with ceramic tiles!

Western_sean

Thanks Slates

I had the rep from Richmond around today and he told me it had been approved for use with natural slate, and that they provide a 50 year guarantee?

Is there a way I can check this out?

muffler

You can ask for a copy of the Agreement Cert or alternatively contact the NSAI who are always willing to help with these matters

sinnerboy

http://www.nsai.ie/index.cfm/area/page/information/CertificateSearch

d2ww

Had a look at these as well, thought the amount of overlap(90mm?) was minimal for any low pitch/exposed site. This put me off, at least with a regular layout the headlap only applies to the 3-5mm slot between slates, but with Nu-lok it runs the full width of each and every slate. Just far too much opportunity for wind and wind driven rain to force it's way in.
d2ww

Western_sean

sinnerboy wrote: »

http://www.nsai.ie/index.cfm/area/page/information/CertificateSearch

Thanks for that Sinner Boy I spoke to them and they confirm that it is approved for ceramic only at present.

d2ww wrote: »

Had a look at these as well, thought the amount of overlap(90mm?) was minimal for any low pitch/exposed site. This put me off, at least with a regular layout the headlap only applies to the 3-5mm slot between slates, but with Nu-lok it runs the full width of each and every slate. Just far too much opportunity for wind and wind driven rain to force it's way in.
d2ww

That's an interesting point d2 - because of the underlying metal battons and channels I wasn't that worried about rain. From a wind point of view it seems to me that all natural slate moves a bit - and as such the copper nails holding them down will get eroded over time. Perhaps this approach might be a way to get around rattling slates in a windy spot?

I'm very much undecided we'll have to see what the suppliers have to say about this NSAI business...

Slates

Western_sean wrote: »

Thanks for that Sinner Boy I spoke to them and they confirm that it is approved for ceramic only at present.



That's an interesting point d2 - because of the underlying metal battons and channels I wasn't that worried about rain. From a wind point of view it seems to me that all natural slate moves a bit - and as such the copper nails holding them down will get eroded over time. Perhaps this approach might be a way to get around rattling slates in a windy spot?

I'm very much undecided we'll have to see what the suppliers have to say about this NSAI business...

Stainless steel slates hooks are the traditional fixing method used to secure natural slates in exposed areas

Western_sean

Slates wrote: »

Stainless steel slates hooks are the traditional fixing method used to secure natural slates in exposed areas

Slates,

I understood that hooks were used in conjunction with copper nails so if the nail gets eroded everthing moves parallel to the roof since the hooks only stop slates moving down. Is that correct?

Thanks for your contributions so far by the way.
Sean

Slates

Western_sean wrote: »

Slates,

I understood that hooks were used in conjunction with copper nails so if the nail gets eroded everthing moves parallel to the roof since the hooks only stop slates moving down. Is that correct?

Thanks for your contributions so far by the way.
Sean

In exposed areas its recommended that 60x30mm copper nails be fixed with 2 copper nails and 1 stainless steel slate hook, in less exposed areas slates can be fixed with one hook with all perimeter slates been fixed with 2 copper nails and a hook

Due to the way slate hooks work, there is no possiblity of any "sideways" movement , as the slate is fixed at the tail and is caught on both sides by the hooks for the next course

Why would copper nails erode???