I want to fill in a basement window

[skeezix]

Hello, I have a basement window rough-in located under where a deck will be going in (the window was accidentally broken out during a mudsill dryrot repair.) Someone suggested that I could use cinder blocks and mortar to fill in the opening... but I am concerned that the mortar may crumble out over time. Does anyone in this forum have any suggestions as to the material to use? Thanks.

[pushkins]

As long as the foundation is either concrete or cinder blocks/brick, remove any wood on the bottom and both side surfaces.
Using cinder blocks or bricks and mortar brick/block in the opening.
As long as you have used the correct mortar there should not be a problem.

[mrcaptainbob]

Basement window......

Sometimes basement windows are considered a possible method of emergency egress. If it doesn't fall into that category, bricking/blocking it in would be fine.

[skeezix]

It doesn't fall into an emergency egress situation. The window isn't big enough for an egress window, it's located in the furnace/water heater room, and it will be blocked by a back deck. I do appreciate the word of caution though... I have made plenty of mistakes by not knowing code before.

Do you think a premix of C:1, L:1, S:6 would be a good mortar mix for this? The window is above grade in the foundation wall. Obviously the wall is load bearing, but I doubt that the window opening itself is bearing much of a load.

--Scott

[pushkins]

The window area is not bearing any load at all so that's not a problem.

I'd just go to a big box hardware store and get premixed mortar, it will do the job just fine for such a small amount of work. I think from memory they are 1:1:6