Garage door rain bump

[rizred]

Hiya,
The ground outside my garage slopes back towards the garage door a bit. When rain hits the garage door it runs down and into the garage.
Im going to replace the perished seal at the bottom of the roller door but I think I also need to create a bump on the floor to help with the problem.

I'm thinking of using mortar to make the bump but I'm wondering if I can make is small AND strong at the same time. (It won't be driven over)
I've got a couple spare bags of ready mix mortar - would this be strong enough?

Any suggestions on how to make the shape?
The garage floor is quite rough so I don't think I could make a profile mould to drag along and form the shape?
I was thinking of fixing a batten down to use as a guide to make the two slopes either side and then removing it and filling the gap to make the flat section the door seal would meet, but I'm worried removing the batten would disturb the mortar and weaken it. Is there anything I could do to make the batten more removable? Eg soak it in water first?

Any thoughts/ suggestions greatfully received!

 

[cdbe]

I would remove that loose fillet and do something like this - you need concrete or a strong cement/sharp sand mix.

 

[Tigercubrider]

I'd cut the cement outside a bit, so any water naturally drains away first.

You can buy a rubber bump like a mini speed hump that glues to the floor of the garage and keeps the garage dry

 

[rizred]

Thanks for the replies.
The garage is the middle one of three and I cant touch anything beyond (and including) the Kurbstone.
Using block work could work but may look too high compared to the others? Maybe some shallower edging stones (?) would work? They would certainly give a smooth surface for the new rubber to rest on.

 

[cdbe]

A block paver is only 50mm thick. The bit on the left of my scribble is the kerb. The row of pavers sit under the shutter and you infill between the kerb and the block - the idea is to fall away from the garage a bit like the left hand one.

 

[rizred]

What cement/ concrete mix would you suggest for this? I've got a couple bags of premixed mortar that need using up.

 

[Tigercubrider]