Basement Window Leaking Under Deck

The first things to are your gutters and window well.

Basement window leaking under deck.

Don t blame basement window leaks on the amount of rain. It is a regular water highway. Wellduct drains water from the window well before it can leak through the basement window. Likewise the problem probably isn t due to the age or installation of your windows.

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. The tight space blocks air flow and keeps the wood damp leading to rot and decay. 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. Not sure how it pooled up that quickly under the deck but it did.

Someone noticed that water had been getting inside and caulked things up. The water leaking down saturates the wood between the tongue and groove. There is a slight gap between that ledger board the one you are looking at bolted against the house and the house itself. Here s what you can do to keep as much water away from your house as possible.

It doesn t look like the builder did anything to seal this window. During the winter months blowing snow sits on top of the porch then on slightly warmer days it melts and leaks into the basement. Water wicks inside on those bolts or tubing. Looking from the inside it looked like an aquarium.