How do I seal the open tops of cement blocks in front of my house?
When my house was built in 1971, the cement block foundation was extended forward about 4" to accommodate a future stone front. Shingles (now rotted) were nailed at an angle overlaying the tops of the block openings. I've removed the shingles and placed 2x4s and loose pavers over the tops of the block openings (after removing all critters). Now I'd like to permanently seal the open tops of the blocks in case water is getting in. What's the best way to do this? I've considered placing strips of shingles the depth of the shelf or with a slight extension ("awning") with a waterproof concrete and masonry product that comes in a tube, but I don't know if it would seal to the shingles. If it does, I'd add pavers with concrete grout or more of the stuff in the tube and could caulk every joint with it. Would this be effective? Maybe omitting the shingles would be better and just using concrete with the pavers would work. I'm considering the pavers because I'll have to lay on the deck and reach down about 30" in a space 9" wide to do the work. Should I leave the 2x4s that are there and apply something over them instead? They're not attached to anything. With cement products, I would need to use something that doesn't set up too fast. Thank you for your help.