Hydraulic Cement

When we removed the old drywall and studs, we discovered a wide crack in our basement wall. There wasn’t any indication of water leaking in, but it was crumbly and old in place. I would have to fix it. I’ve never repaired a crack like this, so this was going to be another learning experience! Google and YouTube were my instructors.

First I had to open up the crack with an air hammer. (Another use for the new air compressor!) Your supposed to chip away material to create and undercut that will hold the cement in place after the repair. However, they really knew how to make cement a hundred years ago. It was very hard and stubborn in places.

The repair itself was a bit of fun. Once all the loose dust and dirt was blown out of the crack, I used my gloved hands to squeeze cement deep into the back of the crack. Hydraulic cement is a very finely sanded mortar that sets up FAST. You only mix what you can use within about three minutes. By that point it starts to harden and stick to the bucket.

The cement is mixed really thin so you can squeeze it into the small recesses in the wall. Again, I used my gloved hands for this. It’s very much like playing with mud. I enjoyed it thoroughly and expect I will be using this stuff more often. I’m not sure for what, but it’s too cool of a material not use for something.

2 comments
  1. as1neth said:

    Nice job! Masonry stuff scares the crap out of me, but you def made it loik easy!

  2. Oh… I was scared at first too. But I figured I own the house so if I screw it up. I can just cover it up and no one would know. But it did turn out to be easier than I expected. I haven’t tried working with block or brick yet. I usually hire that out, but the wife wants a fireplace in the backyard so that may be intro bricklaying.

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