[Doug Locke]

Cleaning up after some water seepage in my basement last weekend.

I was removing all the water logged areas and found 2 holes in the basement/foundation floor.

1) There's a simple sheet rock and 2x4's closet around the boiler and HWH. There is a 4" x 12" square cut out if concrete under left wall of the closet. It was covered by the 2x4 sill and carpet (its full of wet soil and gravel, the edge of the 2x4 was crumbling and the lip of the carpet over it was moldy so the cut them out.

Any clue what this is, what I should do to it? sistering a new 2x4 over it wont

2) There is a much larger hole 12" x about 3ft cut under the kitchen sink cabinet, I did know it was there til I removed the baseboard. There is a piece of plywood covering the half of the hole that inside the water main closet.

Again, what is this? Cover it? (Im thinking the lid of a plastic tote?)

(holes are in yellow/red in diagram)

 

[Nealtw]

What ever the reason it was a dumb idea. I would fill them with concrete.
Clean the edges of the slab and put down poly so you don't get concrete in the drain

Stick a weather strip on the slab about half way down so you get a good seal.

https://www.homedepot.com/p/Frost-K...Rubber-Foam-Weatherstrip-Tape-R734H/100047977

 

[Doug Locke]

What ever the reason it was a dumb idea. I would fill them with concrete.
Clean the edges of the slab and put down poly so you don't get concrete in the drain

Stick a weather strip on the slab about half way down so you get a good seal.

https://www.homedepot.com/p/Frost-K...Rubber-Foam-Weatherstrip-Tape-R734H/100047977

By polyurethane, do you mean foam sheets,aerosol foam ,caulk, or something else?

(Anything outside of cosmetic stuff is new to me)

Theres no filling the 2nd one its a few feet deep, and bellow the water table.
(and id have to tear out the kitchen cabinets to get to it. I could put weather stripping around a board, sheet of plastic. slide it over the hole secure it with a brick or something.

 

[Nealtw]

By polyurethane, do you mean foam sheets,aerosol foam ,caulk, or something else?

(Anything outside of cosmetic stuff is new to me)

Theres no filling the 2nd one its a few feet deep, and bellow the water table.
(and id have to tear out the kitchen cabinets to get to it. I could put weather stripping around a board, sheet of plastic. slide it over the hole secure it with a brick or something.

No I meant sheet poly like 6 mil. after you fill the hole with drain rock or something.

I would cut the floor out of the cupboard just leaving enough around the edges to hold a new white shelf available in box stores.

 

[Doug Locke]

Opened up another can of worms?

Took out the bottom of the sink cabinet. I can sort of see more of the hole.
There is an electrical 'thing' in there .The cord is plugged into an outlet inside the wall. Theres also a 1" and a 1.5" PVC pipe going in there.
Is this a sump pump and I don't see a float switch but IDK what else it would be...

 

[Nealtw]

Opened up another can of worms?

Took out the bottom of the sink cabinet. I can sort of see more of the hole.
There is an electrical 'thing' in there .The cord is plugged into an outlet inside the wall. Theres also a 1" and a 1.5" PVC pipe going in there.
Is this a sump pump and I don't see a float switch but IDK what else it would be...

View attachment 598483

clean it up and see if there is any info printed on it,

There are other controllers that don't use floats.

 

[Doug Locke]

clean it up and see if there is any info printed on it,

There are other controllers that don't use floats.

I cant reach it at all.(more on that later).

I rained that area with $15 800gph fountain pump abd 1/2" tubing.`Went in with an endoscope. The water main take up a lot of space, and the bricks at the bottom conceal any activator. But the the the cord goes into looks like all white pvc, sort of mushroom shaped no writing on it. I did see that the 1'' pipe is connected to this thing.It travel up out of the hole, goes up 4ft goes over 10 feet; drops feet so the it is dangling over the sump well well above the water table.
I've never seen/heard this thing go off ever. It may or may not be needed.

To reach it I have to tear out the counter top, two 12" cabinets, the sheet rock in front of the water mi closet and the two side by side 2x4 acting as a sill.

Im thinking I should connect the fountain pump to the 1" pvc, add a float switch, call it a day. Bad Idea?

 

[Nealtw]

I cant reach it at all.(more on that later).

I rained that area with $15 800gph fountain pump abd 1/2" tubing.`Went in with an endoscope. The water main take up a lot of space, and the bricks at the bottom conceal any activator. But the the the cord goes into looks like all white pvc, sort of mushroom shaped no writing on it. I did see that the 1'' pipe is connected to this thing.It travel up out of the hole, goes up 4ft goes over 10 feet; drops feet so the it is dangling over the sump well well above the water table.
I've never seen/heard this thing go off ever. It may or may not be needed.

To reach it I have to tear out the counter top, two 12" cabinets, the sheet rock in front of the water mi closet and the two side by side 2x4 acting as a sill.

Im thinking I should connect the fountain pump to the 1" pvc, add a float switch, call it a day. Bad Idea?

Strange , I don't know what you do wit that.
Just don't like that moisture in living space.