Basement Window Leaking Under Deck

It is a regular water highway.

Basement window leaking under deck. Wellduct drains water from the window well before it can leak through the basement window. Someone noticed that water had been getting inside and caulked things up. But because the window is under a deck and can t serve much purpose the best approach would be to have it bricked in and waterproofed from the outside and have the well removed. There is a slight gap between that ledger board the one you are looking at bolted against the house and the house itself.

The tight space blocks air flow and keeps the wood damp leading to rot and decay. Under the deck there is plastic and then gravel about an inch. Likewise the problem probably isn t due to the age or installation of your windows. Don t blame basement window leaks on the amount of rain.

If it does solve the problem your choices are to leave the plywood in place or replace it with a plastic window well cover if there is enough room below the deck. It doesn t look like the builder did anything to seal this window. The water level that night was about half way up the window. Poor drainage around your home can allow water from rainfall melting snow or the ground to fill your window wells and enter into your basement.

Water wicks inside on those bolts or tubing. The first things to are your gutters and window well. Not sure how it pooled up that quickly under the deck but it did. The water leaking down saturates the wood between the tongue and groove.