Square Hole in Foundation - Need to Plug
I have a square opening about 6" x 6" on each side of the cold room that is under my concrete steps. I want to build up the flower bed in front of the house but the level of the earth would be almost covering these two square openings. I guess they were used for air in the cold room as there are screens over them. Anyhow I don't use the cold room for anything and I'm afraid of water infiltration once I build up the flower beds.
I need some tips on closing these openings and making them water tight.