Mounting on a plain tiled (Rosemary) roof

[ChrisJEvans]

I'm sure this must have been covered numerous times on the forum but my searching mojo isn't working, as it turned up nothing related with 'Plain tile' or 'Rosemary'
I can find lots of videos showing fitting brackets to a plain clay tile roof (the tiles are often called 'Rosemary' in the UK) they all show the use of Genius Solarflash Flat Tile Flashing Kit
Solarflash
or
Hookstop

But one supplier says they don't stock them as they are unnecessary!
But without them how do you keep water out?

Hookstops seems to be more about not breaking the tiles under under the bracket when standing on a rail but my rails are not going to be horizontal that doesn't seem to apply. A photo of my part open shed roof which has the same construction as our main roof is here:My Roof construction
n.b. it 'close boarded' Featheredge but my question would still apply to a standard battened roof.

Any pointers or advice gratefully received.

[smegal]

I'm not sure if your tiles are similar to mine. Here is what I used to mount my panels. The hook is sat on a plywood packer to get it sitting far enough out. I then ground a notch in the back of the tile. The hook sits underneath the overlapping tile keeping the rain out.

[ChrisJEvans]

Thanks for replying
Unfortunately Rosemary tiles are thinner than the concrete tiles on your roof you'd have to grind away almost all of the thickness

[AE-NMidlands]

Thanks for replying
Unfortunately Rosemary tiles are thinner than the concrete tiles on your roof you'd have to grind away almost all of the thickness

Surely, given that conventional tiles overlap by more than 50%, it wouldn't hurt if the tiles with hangers under them were raised by a few mm? It will all be covered by the panels anyway, although there will still be the rain running down from above the panels.
A

[smegal]

Thanks for replying
Unfortunately Rosemary tiles are thinner than the concrete tiles on your roof you'd have to grind away almost all of the thickness

The hooks are only 5-6mm thick (I do have some I can measure if it helps), so any notching will reduce how proud the tiles sit without going too deep.

[Oldgreybeard]

Would using the thinner slate hooks work?

[spread-tee]

Rosemaries are usually slightly curved along their length, known as the batter, so you should only need to grind the thickness of the bottom 20mm or so of the tile to provide clearance , given that they usually have 100mm overlap even if you ground right through the tile the roof would still be waterproof. I think that would be a better outcome than having the tile sit up above its lower neighbour as then you could get wind blown water running in.

Desp

[ChrisJEvans]

Thanks very much for all the info and ideas.
As the Genius Solar flash kits are only going to add £120 to the cost for the 30 I need and I see no practical downside with them I'll probably go with them. I have been advised by someone who used to do the roof work for a PV installer that I should useHookstops It looks like they'd cost me over £200

This 'Void filler' Alternative are only £100 for the 30 I'd need

How common are these sort of flexible tile replacements?
I wonder why they recommend masticing the long edges of the Void fillers?
Any thoughts?

[Mr Gus]

I'd always go for the one stop belt & braces approach of all angles covered whilst the ladder / scaffold / space is available compared to forced fixing later.
Naturally make sure sealants are compatible with bitumen or whatever you found under the tiles.


Keen to know the spec details on the eBay listing.