Protect finished basements with redundant waterproofing in London, Ontario—interior channels, backup pumps

https://jaspernlec172.wpsuo.com/french-drains-for-new-builds-in-london-ontario-what-builders-need-to-know

Protect finished basements with redundant waterproofing in London, Ontario—interior channels, backup pumps, and sealed penetrations to reduce the risk of costly damage.