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-   -   Seal gap between new and existin basement floor? (http://www.diychatroom.com/f19/seal-gap-between-new-existin-basement-floor-127489/)

theedudenator 12-23-2011 12:40 PM

Seal gap between new and existin basement floor?
 
My basement was extended some years back.
This basement floor is a step down from the original slab.

My new slab butts against the old footer of the old slab.
The cement was just poured up to the footer.
It is jagged and has gaps.
There is dirt in the gap.
It does get moist with heavy rain.
Dirt just turns color. No water ever comes out.

I want to put a wall directly over this area.
I think I should seal this area of the floor?
Any thoughts?

titanoman 12-23-2011 12:59 PM

I can picture it, but do you have pictures to show about how much area you're talking about?

Sent from a Samsung Galaxy S2

Bondo 12-23-2011 05:33 PM

Quote:

My new slab butts against the old footer of the old slab.
The cement was just poured up to the footer.
It is jagged and has gaps.
There is dirt in the gap.
It does get moist with heavy rain.
Dirt just turns color. No water ever comes out.

I want to put a wall directly over this area.
I think I should seal this area of the floor?
Any thoughts?
Ayuh,.... What I'm seein',...

I'd hose it down, 'n flush out the crud,...
Then work my way down through it, trowelin' in/ on hyd. grout to true, 'n level it...

theedudenator 12-26-2011 09:40 PM

Photos of the gap.

There is a planned doorway.
I am going to make a form out of wood so I can pour concrete to square out the step. Do I use standard pre-mix concrete for this?

The rest of the length will be hidden by the wall I am going to build.
So I just want to seal it off so I can build the wall.

http://i119.photobucket.com/albums/o...e/01260427.jpg
http://i119.photobucket.com/albums/o...e/01260426.jpg

http://i119.photobucket.com/albums/o...e/01260428.jpg

ben's plumbing 12-26-2011 09:47 PM

yes you got the right idea...I would use bagged ready mix and frame to nice square step....it will look good....:yes:

theedudenator 12-26-2011 11:41 PM

I was just going to form and square the concrete where to door way will be.
I didn't want to do this around the rest of the basement, since there will be a new wall hiding the area.

So I guess I just use hydraulic cement in the other areas?

Bud Cline 12-27-2011 12:00 PM

Quote:

I didn't want to do this around the rest of the basement, since there will be a new wall hiding the area.
Good ! That way when the moisture comes and goes it can wick into the wood framing and rot the boards and it can get into the drywall and create mold in the walls. Yup...good idea. Don't do anything to close of the ragged edge anywhere but at the door.:)

Bondo 12-27-2011 03:47 PM

Quote:

Originally Posted by theedudenator (Post 804136)
I was just going to form and square the concrete where to door way will be.
I didn't want to do this around the rest of the basement, since there will be a new wall hiding the area.

So I guess I just use hydraulic cement in the other areas?

Ayuh,... After seein' the pictures,...
I'd form, 'n pour the Whole thing...

theedudenator 12-27-2011 08:50 PM

Hang on now!!!
I never said I didn't want to fix it!
Do I need to form and pour the entire area? Is that the proper way to fix this?

There will still be a seam in the concrete where it intersects the floor. Won't this draw moisture even after I form and pour?

And if the proper way is to form and pour I can do this.
I have my mixer still in the basement.

Quote:

Originally Posted by Bud Cline (Post 804465)
Good ! That way when the moisture comes and goes it can wick into the wood framing and rot the boards and it can get into the drywall and create mold in the walls. Yup...good idea. Don't do anything to close of the ragged edge anywhere but at the door.:)


Bud Cline 12-28-2011 09:49 AM

Here's what you said originally.

Quote:

The rest of the length will be hidden by the wall I am going to build.
So I just want to seal it off so I can build the wall.
Sounded pretty final.

You now have an alternate recommendation, you do what you want.:)


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