How best to patch this?

[Mike26]

There is a storage area in the basement under the porch shown here. I noticed water coming in during heavy rains and checked the outside wall to see where the water might be getting in. I noticed that the foundation blocks were covered in a layer of cement that seems to have pulled back from the cement block and allowed water to get in behind it (at least I hope this is where the water is coming from ). I started to remove the loose cement and noticed that there's quite a big gap behind it. My question is, what's the best way to patch this up?

 

[ralphhughes]

There are special silicone caulk products for sealing concrete gaps like this. I would recommend you use them for filling these gaps. Look in the masonry section of your hardware store. Since they're silicon-based, their a lot easier to work and smooth out than an adhesive.

 

[zimmy1948]

get a bag of type S mortar you just have to add water and trowel it on.