I've got a trough drain in front of my garage (inward sloping driveway makes
it a river in rainstorms). I recently rebuilt the trough and all the
concrete around it, using treated plywood as the form (due to limitations,
the form had to stay installed).
I coated the entire inside and railing with rubberized spray undercoat,
thinking it would work great. it did, for about a month. In cleaning the
drain out (it acts as a nice trap for dirt and crud before it drains), I was
pulling up the undercoat too :-( So I'm looking to seal the concrete
inside the trough with something tougher as it holds water a lot of the time
(which will lead to concrete failure prematurely I'm sure).
I've got a "plastic based" sealer that is VERY thick....it resembles a thick
tar substance both in smell and look, and is VERY sticky. I'm debating
buying a larger container of this stuff and slathering it inside the trough.
I've used it to seal my foundation when I noticed some cracked parging, and
it is seriously tough. not easy to work with, but tough.
is there something more appropriate for this application? I guess any goo I
can lay on the cement that will keep the water off it will work, won't it?