Low profile, narrow drainage channels?

[Andehh]

Hi all, 

 

My Google-fu is letting me down. We have sliding doors with a desire for level threshold inside/outside... The sliding door though has a 10mm lip that hangs down over the runners, preventing the tiles from butting up against the sliding door frame. 

 

The sliding door frames sits on a block 'wall' which sticks out about 50mm,preventing normal depth Drains from sitting hard up against the frame. 

 

Builder plans to install a blade drainage profile several cm off the doors to prevent any rain deluge flowing up(ish) the patio incline, which will drain into a normal drainage channel. 

 

I would prefer to avoid having a random 15mm gap for door slidding before tiling continues then another 15mm gap for the blade drain 

 

I would prefer a two in one, a narrow AND shallow drain that can sit below this sliding door lip that also provides emergancy water drainage during storms. 

 

Does anyone know of a sort of 40mm wide and 40mm deep type drainage channel?? 

 

Many thanks, 

[MikeSharp01]

No but you could make one from something like this 25x50 aluminium channel

 

https://www.metals4u.co.uk/materials/aluminium/aluminium-channel/12979-p

 

[PeterW]

32 minutes ago, Andehh said:

Does anyone know of a sort of 40mm wide and 40mm deep type drainage channel?? 

40mm deep won’t stop anything - it will overflow in seconds. 
 

Fit something like this around 70-80mm from the edge of the threshold and then

tile/pave the gap

 

https://www.cotterillcivils.co.uk/products/a15-paving-slot-channel-with-aluminium-edge-1m