Top step linear drain - Does top step at dpc level require drain

[chris1812]

I am planning to renovate the steps outside the living room French doors, 2 steps, each 150mm rise down to patio. Was considering top step at dpc level, same as inside floor level. Top step would be 2700 long (200mm longer than doors) x 600 front to back. Lower step would be 450 bigger all round. Would it be advisable/required to install linear drain in front of cill or would it be sufficient to allow the step to drain naturally to the lower one?

[lutonlagerlout]

you would normally have around a 5mm fall away from the building
this is normally sufficient
LLL

[seanandruby]

There are plenty of threshold drainage channels on the market, take your pick.

[chris1812]

Hello LLL, thanks for the swift reply. I would normally install garden steps with a positive fall away from the riser so a slight increase to 5mm over the 600 slab should be straightforward to achieve. Thanks again.

[lutonlagerlout]

as Sean said there are all sorts of drains available

but for a simple step it doesn't warrant it aesthetically
LLL