How to stop my garage from flooding?

You could use some of that stuff they use as cable shields for traffic light wires and so on run across the road. I should thing the glueing down/sealing is important. Gripfill?

Can't you hollow the surface to provide runoff, or use a few lengths of Accodrain or similar? Brick on edge drain?

Wasn't much use in New Orleans was it?

An alternative is a length of wood screwed to the floor and sealed with mastic. A far better solution is to stick a proper grate across the width of the drive and drain it properly.

"cable protector".

Not the easiest of things to do. The garage door is inset into the structure of the garage walls and floor. It's not flush with the outside.

Storm Sheild seems to be the simplest solution to prove the point as it were. I'm either going to have water in the garage or on the drive. I prefer to have it on the drive. I was thinking of removing a strip of tarmac before the garage concrete floor so that any water can soak away naturaly, presumably as it used to do before the tarmac was put down.

That specifically says "wind driven rain", and yours isn't being driven by the wind, it's just flowing in. You need to lay something like this

Kin, Ell. That is outrageously expensive, FORTY SEVEN POUNDS PER METRE!!!! Sorry, but *really*. I've just got to toddle off down- stairs for a bracer. Pfffft!

Note I said "something like this", not "buy this stuff" - it was the=20 first thing I found on Screwfix, and as it's rated to 25 tonnes it=20 should do the job :-) They do 3m of this stuff for =A350

Yes, I know, I am not getting at you at all...

Gee Hugh Henry, as they might say in Yank. You can get Accodrain for about 1/2 that, & concrete the brigger in. Not sure the OP is interested in this stuff, though. It's used a lot for "patios", or terraVES, where a natural fall to a gulley or is it gully would be much more aesthetically pleasing.

| That specifically says "wind driven rain", and yours isn't being driven | by the wind, it's just flowing in. You need to lay something like this |

No reason for anything that complex, A simple concrete block with a shallow U in the top would work.

In article , Dave Fawthrop writes

It works for your average day to day rainfall but for those occasional thunderstorms I'd even consider a single channel drain to be inadequate at the bottom of a tarmaced slope.