mounting systems for welsh slate roof

[alexpau]

G PACK You need 6mm screws to comply with BRE regulations on a 35mm rafter which HILTI sell and are approved under Eurocodes along with item - MSP-RHC-B HILTI ITEM - 435504

 

[dansk]

Has anyone got some actual photos of a thin slate roof being installed with a normal anchor and flashed over, step by step would be ideal.

 

[SRE]

Oops sorry was supposed to get some and send them on to you - those pesky customers keep getting in the way! Doing one on Thursday is that too late?

 

[dansk]

No mate, I would really appreciate it, didn't ask again as I know your really busy.

 

[SolarCity]

SRE, I'd love to see your pictures too if you don't mind.

 

[Worcester]

Dansk, I posted it a little will ago, here is the link:

http://www.electriciansforums.net/p...35844-fixing-new-slate-roof-5.html#post310609

 

[dansk]

Thanks! Didn't realise that much of the roof needs to be stripped back! Did see something else I want to ask, the panels were butted up to each other, don't they need an expansion gap to all edges?

 

[SolarCity]

Thanks for the picture, Gordon. This is a similar method to ours. Our brackets are somewhat different to yours so we can't install the bracket under the timber like the way you do it. Looks neat and tidy, thanks for posting it.

 

[alexpau]

Dansk

Hilti have customers who have sent over ways of installing on slate roofs with a great finish that will not allow water ingress or damage to the tile, if you send me over your email address i will forward the photos

 

[dansk]

alexpau i sent you PM

 

[Worcester]

The boys at work (also posted elsewhere!) http://bit.ly/SlateRoofInstall , Anyone at Segen in Sept I'll be at the bar, thirsty

@alexpau

Paul, many thanks for the photo's , that's a neat and tidy installation (although it looks like someone's practice / training roof rather than a real world situation ) , however I'd be really interested in your interpretation as to whether the photo you sent is Eurocode 5 compliant and how you interpret that. Thx

 

[NicoGoodwin]

Hi GPack
Hilti do the 'normal' slate bracket for those tiles although you will still have the problem of trying to remove the slates as carefully as possible and then replacing with lead flashing is the easiest solution so I believe. The brackets do have a thickness so can still push up the slates if they are not cut in between them
Good luck
Nico

 

[alexpau]

Hi Worcester. All Hilti rail mounting products are Eurocode compliant including the roof screws ( i believe we are the only manufacturer who have roof screws supplied with our mounting systems which are). The issue is if the screws i.e. 8mm or 6mm comply with building regulations as most european roofs are boarded and dont use rafters and battens like we do in the UK. If the roof timbers allow the use of 8mm or 6mm screws them our products comply. The issue is for example if the roof timber is 80mm wide then if you drill into the centre of the timber ie 40mm then the diameter of the drilled hole cannot be bigger than 10mm to comply with building regs this is partly the problem in why you cannot use hanger bolts for fixing slates as they will not allow for compliance with building regs in UK roof timbers.

Regards

 

[Worcester]

@aelxpau

The issue is for example if the roof timber is 80mm wide then if you drill into the centre of the timber ie 40mm then the diameter of the drilled hole cannot be bigger than 10mm to comply with building regs this is partly the problem in why you cannot use hanger bolts for fixing slates as they will not allow for compliance with building regs in UK roof timber

Hi Paul, thanks for that so if a rafter has to be 80mm wide before you can install an 8mm hanger bolt, which Hilti products installed in which manner are Eurocode 5 compliant on a standard UK 35mm wide rafter?

i.e What do you have and how do I fit it to a 35mm wide rafter and comply with Eurocode 5?

Thanks

 

[alexpau]

Hi

Worcester HIlti have just launched a 6mm diameter holed roof hook ( in pantile initially) which has three rows of 6mm holes along with 6mm screws which comply with Eurocde and GB codes along with the 6mm screws again which have been tested and approved and come as part of our 10 yr system warranty. As i mentioned before a potential problem within the industry is not just if the mounting kit is approved its also the roof screws used to tighten down the roof hooks, if for example you purchase your mounting kit from a supplier and you get your roof screws form somewhere else what happens if the screws of system fail i.e. the screws corrode or the system break under load who do you go back to? the chances are the mounting kit manufacturer will not except liability, Hilti are the biggest construciton fixing company in the world and we system sell ( not part systems) so we warrantee the entire system as long as its installed to manufacturers specification for 10 yrs under our company insurance.

Regards