Re: Flashing new construction window in conrete foundation
precisely as just mentioned. lining the opening with vycor first also helps also setting hte pt further back in the opening can create protection.
your other option is to bring the window further out to the face of the foundations then remove the siding directly above so you can install flashing up under the siding. this only works however when the opening is right at the top of the foundation wall where the floor system creates the window header
fire up the saw and make some dust