Roof anchors

[SolarCity]

I hate anything that breaches the tile, but I can't see any other way of doing it. Hangar bolts look like being the only reasonable option in my opinion - and I'm not entirely happy about it.

 

[SRE]

We used roofers on our slate job this week and they were horrified at the thought of drilling and sealing the slates. All 68 hooks were fiitted by lifting the slate (some as big and almost as thick as paving slabs and some the size of half bricks and quite thin) cutting and flashing the slate back in. They had a stock so slate with them incase of breakages and it looks as though we've got another job on the back of the care that was taken with this job. Pain in the backside though .....

 

[SolarCity]

How did they make good on the slate after a bracket was fitted?

 

[SRE]

Don't know if you can see it on this photo - every bracket was flashed in with lead after it was fitted.

 

[SolarCity]

Thanks for the pic, I'd be much happier installing that way than using anchor bolts. Still wouldn't be 100% happy that it would stay weatherproof though :-(

 

[SRE]

It's sealed underneath with a roof sealer that stays semi fluid. So the flashing sits on a sort of floating seal - our roofers are working on slate every week that's why we subcontract them and that's the way it's done by the professionals. We had 2 slate roofs in a week - don't want to see another for at least another couple of weeks!

 

[d1ssc]

Using a lead flashing with slate imo is the only way to do it right, being a roofer i strongly wouldnt advise drilling thro the slate and trying to use sealant. These anchors that go thro the slate with the rubber washers wont stay watertight for long if even atall and they will perish with the weather, any movement or probibly just trying to tighten them up will crack the slate...... wasnt very impressed that on the pv course they were advising using these types of anchors!!!

 

[d1ssc]

Sorry to be goin on but we would have had the lead up under the slates in your picture, then they wouldnt need sealed, it would be just like fitting a vent or a flue pipe, ive took a lot of good info from reading on this forum, being a non spark hopefully this might help some of you guys back!

 

[SRE]

No worries about going on about something - we're all learning from each other. Our roofers have been doing this for over 20 years but it doesn't mean it's the best way. I'll tell them what you said, I seem to think there was a good reason for not doing it this time but I can't for the life of me remember what it was.

 

[Worcester]

No need for sealing if it's done properly, this is an example using the Azur fixing.

Also there really should be very little lead left showing when done properly.

Check out these actual install pictures: https://picasaweb.google.com/worces...authkey=Gv1sRgCJz0hr728c_EqgE&feat=directlink

Gordon