A french drain may not be able to handle your large Q (flow
rate) issue. A 5" wide PVC trench drain with the open top
metal grate ,which you often see on areas with pavers, has a much
higher Q. They come in 4 foot sections. My drive way
slopes down to my garage door. I put a slight swale 2 feet
from the door with a trench drain under the pavers. I have
gotten a puddle there during a down pore, but it is gone in 5
minutes. Never got any water under the door.
If by chance the solution includes digging a trench and
re-directing drainage on the outside of the foundation wall,
consider applying a bituthene barrier to the exterior of the
foundation wall. We did this at my office - basement file
room went from constant water penetrating the foundation wall to
bone dry. Obviously the ultimate solution is to figure a way
to redirect/drain the water. Good luck.
Newsletter
Subscribe to our email list for regular free market updates
as well as a chance to get coupons!
A french drain may not
Posted by skyfish on 13th of Aug 2019 at 01:02 am
A french drain may not be able to handle your large Q (flow rate) issue. A 5" wide PVC trench drain with the open top metal grate ,which you often see on areas with pavers, has a much higher Q. They come in 4 foot sections. My drive way slopes down to my garage door. I put a slight swale 2 feet from the door with a trench drain under the pavers. I have gotten a puddle there during a down pore, but it is gone in 5 minutes. Never got any water under the door.
If by chance the solution
Posted by RichieD on 13th of Aug 2019 at 07:21 am
If by chance the solution includes digging a trench and re-directing drainage on the outside of the foundation wall, consider applying a bituthene barrier to the exterior of the foundation wall. We did this at my office - basement file room went from constant water penetrating the foundation wall to bone dry. Obviously the ultimate solution is to figure a way to redirect/drain the water. Good luck.