I am now working on extending my downspout under the sidewalk. Not something too complicated, just to distance the water a few extra feet away from the house. While researching about different pipe options (PVC or Corrugated) I found a product by Flex Drain.
This looks like a very simple product to use for this type of small project (DIY) that will suit my needs. Unfortunately I couldn’t find a favorable review when comparing this type of pipe vs Corrugated and PVC regarding strength and necessary slope (debris).
I would like to get someone’s personal opinion from an experienced user.
Thank you very much.