Duct Seal

[Little Bill]

Will duct seal work below grade?
I have to drill a hole from inside a basement and it will come outside below grade. I won't have time to let silicone or spray foam set up before putting the dirt back.

 

[ceb58]

Patch it back with hydraulic cement. Mix it, spread it on and in 5 minuets its hard as a rock.

 

[Little Bill]

Patch it back with hydraulic cement. Mix it, spread it on and in 5 minuets its hard as a rock.

I had forgot about that stuff. I used a ton of that a couple of years ago patching up my parents' basement wall before we sold the house.

 

[Fulthrotl]

Patch it back with hydraulic cement. Mix it, spread it on and in 5 minuets its hard as a rock.

yep. it will dry underwater, and it expands when it dries, hence the name hydraulic.... duct seal will just cause a mess,
and put oil into the area, making any subsequent patching not work.

 

[ceb58]

yep. it will dry underwater, and it expands when it dries, hence the name hydraulic.... duct seal will just cause a mess,
and put oil into the area, making any subsequent patching not work.

Just don't do like my son. He mixed a batch with hot water. The stuff set up in about 30 seconds with the trowle stuck in it :happysad:

 

[Little Bill]

Just don't do like my son. He mixed a batch with hot water. The stuff set up in about 30 seconds with the trowle stuck in it :happysad:

The directions on the brand I used in the basement repair said let it sit 5 minutes before applying it. It only took one batch for me to realize that 5 minutes was too long. It was already to hard to spread.:rant:

 

[GUNNING]

Been there done that. When the water starts to come out of the mix its too late.