Plastic pipe through cinder block

[thejudges69]

We had the pipe ran from the house to our 40x100 garage a few days ago. Well before we back fill I needed to add a pipe to the ditch for incidentals like phone line, cable line and so on. Today I punched the hole in the wall for the pipe and don't like the end result.

I sealed the hole in the cinder block with hydraulic cement and I think I should have use just cement or something else. I've used hydraulic cement before sealing cracks in my foundation and it was nice to work with. This time it was real globby and setup fast, at one point I mixed it real thin and it still didn't work nice.

Any pointers on sealing this pipe? If the cement don't set nice in the morning I'm going to chip it out and try something different.

 

[BD1]

I have used sheetmetal to fix cinder block blowouts. I cut sheetmetal to the size of block, hole saw sheetmetal to match pipe location, and drill holes for mounting to solid part of block. I feather edged all four edges. Added caulk all over the sheetmetal and block. Set in place and secure to wall. I use 1/4'' hit anchors. Something like this for a example,
https://www.us.hilti.com/anchor-systems/other-metal-anchors/20682

 

[sberry]

Use dry pack mortar mix. Thin is not good for something like this.

 

[thejudges69]

Use dry pack mortar mix. Thin is not good for something like this.

I'm not sure I understand what you said...Thin is not good?

 

[KCarGuy]

I have used a Spray Foam that is sold through a Local Fish Store.
It is designed for Ponds, especially for holding rocks in place.
Its strong, and waterproof. (and Dark Purple)
It works like Great Stuff.
I had a Pipe going through my Concrete foundation (below ground level) that the previous owner tried sealing with everything known to man.
It always leaked during heavy rains
About 12 years ago, I dug that area up outside, spend a weekend cleaning out all the old tar, silicone and concrete...sprayed the Pond Foam (in and around the Pipe) let it dry for 24 hours and filled the dirt back in.
Been Leak free for years.

 

[gregtwojeeps]

.........................................

 

[sixty4]

Anytime I drill through a foundation I use hydro cement and use roofing tar over that around the penetration from the outside in. If your blow out is from the inside just clean it up and fill it smooth. Wet it with a brush or other to smooth out. Depending on how bad blow out is you may need to add a few layers but scratch it up everytime to get a good bond.

 

[404]

I have used a Spray Foam that is sold through a Local Fish Store.
It is designed for Ponds, especially for holding rocks in place.
Its strong, and waterproof. (and Dark Purple)
It works like Great Stuff.
I had a Pipe going through my Concrete foundation (below ground level) that the previous owner tried sealing with everything known to man.
It always leaked during heavy rains
About 12 years ago, I dug that area up outside, spend a weekend cleaning out all the old tar, silicone and concrete...sprayed the Pond Foam (in and around the Pipe) let it dry for 24 hours and filled the dirt back in.
Been Leak free for years.

Might be called Waterfall Foam Sealant

https://www.google.com/search?q=Waterfall+Foam+Sealant&gws_rd=ssl

 

[Kensgarage]

Draw your circle in the block.First mark dead center and drill all the way through with a long bit.
Take a 3/16 masonry bit and drill all around the circle on both sides, Tap it with a beater.
All you'll need is a bit of silicone(or grout) if you take your time.

 

[thejudges69]

Draw your circle in the block.First mark dead center and drill all the way through with a long bit.
Take a 3/16 masonry bit and drill all around the circle on both sides, Tap it with a beater.
All you'll need is a bit of silicone(or grout) if you take your time.

That is what I did. The pipe was roughly 2 ⅜" diameter. The hole is maybe 3" diameter. I don't like the pipe I'm using so I may change it to 1" well pipe. It's only purpose is to get phone and cable lines to the shop fom the house.

I used hydraulic cement and it didn't seal nice. I redid it tonight just to seal it while I'm on the road this week. I'm going to chip it all out and probably use the mortar mix mentioned above. I'll have a bigger gap to fill if I change the pipe but that will be ok.