Soakers for interlocking tiles?

JonHeath · 11 May 2020

Hi all,

I'm making a lean to down the side of my house. I have a small section of stepped flashing required (around 1.5m length). Although the use of this structure is storage/shed, I'm doing the roof in the same tiles as the house to stay in keeping. The tiles are Marley Ashmore Interlocking Concrete tiles.

I've read that you shouldn't have lead soakers under interlocking tiles.

Marley do make their own "Marley Ashmore Dry Fix Soakers" which are expensive and come in packs much bigger than I need.

Presumably Aluminium Soakers are a "no no" for the same reasons as the Lead. Do the pros use these specific soakers made by Marley, not bother, or do something else? Any advice appreciated.

Cheers
Jon

datarebal · 11 May 2020

you can use soakers if you form them correctly and support. even lead.

or you could use a grp secret gutter they are not expensive

JonHeath · 12 May 2020

Thank you. I'm still not sure what I'm going to do though. The grp secret gutter would normally work fine but I have a downpipe 40mm from the wall going through the roof where this gutter would be. So it would go straight through the gutter, which would mean it wouldn't do its job.

When you say use soakers if I form them correctly and support, would you mind explaining that more please. The one's Marley make for Ashmore tiles aren't square (they seem to have a slight upstand to create a run onto the next tile down) and hook over the top of the batten. I've attached a pdf showing details on those if it helps. Happy to make my own if we're simply talking of creating a lip to go over the top of the batten. Further advice appreciated.

Cheers
Jon

^woody^ · 12 May 2020

Why can't you just flash it as normal?

JonHeath · 12 May 2020

I am flashing it as normal but have been advised soakers should also be used for a long term water tight finish.

^woody^ · 12 May 2020

JonHeath said:
I am flashing it as normal but have been advised soakers should also be used for a long term water tight finish.

I meant flashing as normal with an apron flashing, but I can see you probably want to maintain the traditional look for these tiles and have them butt up against the wall with no flashing over the tiles. In which case just use lead, and hide it under the tile.

datarebal · 12 May 2020

^woody^ said:
In which case just use lead, and hide it under the tile.

In the form of a soaker.
ill knock one up tomorrow and post a picture to copy. remember it goes under the tile

JonHeath · 12 May 2020

^woody^ said:
I meant flashing as normal with an apron flashing, but I can see you probably want to maintain the traditional look for these tiles and have them butt up against the wall with no flashing over the tiles. In which case just use lead, and hide it under the tile.

Sorry it's probably my terminology, this isn't my day job!

It'll be stepped lead flashing going over the tiles. This matches a ground floor extension nearby so I'm fine with the look.

My original plan (before reading that soakers and interlocking tiles aren't straightforward) was to do the stepped flashing over the tiles, with aluminium soakers underneath for belt and braces.

^woody^ · 12 May 2020

You don't need soakers then

JonHeath · 12 May 2020

OK. Even though I've got the downpipe coming through the roof 40mm from the wall about halfway down the slope? At that point the lead will need cutting round the pipe and presumably open up a potential problem downstream.

I've got one of these weathering slate things (see picture) for the pipe which in my head was offloading onto the next soaker down. I suppose I could install a grp secret gutter, but just from the point the pipe starts to the eaves.

datarebal · 12 May 2020

You can indeed use the lead slate and the secret gutter cut in two sections.

catlad · 13 May 2020

Moving the pipe seems the sensible approach.

catlad · 13 May 2020

I go to a lot of leaks where for whatever reason people think its best to flash pipes into their flashing.

JonHeath · 13 May 2020

I don’t have the room to move the pipe unfortunately. This is a tight cubbyhole space down the side of the house bordering next door.

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Soakers for interlocking tiles?

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