Questions tagged [basement]

For questions generally relating to habitable spaces in a home below ground level, and to foundation types that include a space of this type.

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Converting 3" (No Trap) to Sink with Wall interference

Current Configuration: 3" (No Trap) pipe located in front of the future wall. (Blue Chalk line is the front edge of the wall (2x4). Plan: Repurpose this for the sink by 1. Breaking concrete, ...
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2answers
87 views

How far out to install french drain so water can't pass underneath it and still get into house?

We have bilco doors in our backyard that go down into our basement. Our basement is cinder block foundation. Unfortunately our entire back yard slopes downward toward the house, and so during heavy ...
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2answers
759 views

Is 1/2" plywood adequate for a slab overlay?

I am planning to take the 1" EPS + plywood sandwich approach to my basement subfloor (pergo on top). I've read conflicting things around the plywood -- is 1/2" ply sufficient? Do I need to do two ...
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28 views

Dealing with water between concrete basement floor and wood 2x4 framing

New homeowner here, just had our first sewer drain backup. There is a wall separating the finished part of our basement from the unfinished part. The wall rests on a 2x4 on top of the concrete ...
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1answer
245 views

Sealing fully cast-in floor joists

My house built in 1928 has concrete filled spaces between the floor joists and rim joist. There are gaps in some of them, some 1" wide with most being very small. I suspect these gaps could be the ...
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Why would there be a hollow area under my basement slab? [closed]

My house has a partially underground basement, and in the (roughly) center of it is a strange hollow area underneath it. If I stomp on the ground anywhere else, there's almost no sound, as its just ...
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1answer
89 views

Installing a fiberglass shower in basement

I have an acrylic preformed shower to install in my basement. There is a rough in drain in a 10x10 cutout. I have two questions. The shower hole for the drain is in the center of the shower so it ...
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cracks/marks on basement wall

While cleaning my basement today i saw these cracks/marks on the wall. When i touch it its dry and not wet. Since its the basement the other side of the wall is exterior under ground. Any idea what is ...
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How do I seal an old woodstove pipe in the basement?

We are in the process of renovating our basement and there is an old wood stove pipe left over from a wood stove we removed. Not looking to remove the entire pipe, as it goes through the roof in two ...
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Does this basement HVAC register/vent plan make sense?

Located in Ontario Canada, so winter tend to be cold and summer mild. We are finishing basement, the finished area is about 900 square feet. We have came up with the following locations and numbers ...
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1answer
374 views

Insulating and framing a basement after drain system and plastic vapor barrier installed

We had a moisture problem in our basement located in Minnesota. Recently some foundation water came up and ruined our carpet, when we tore out the drywall there was moisture build up and some mold on ...
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1answer
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Bathtub Leak when Drain Clogs

I get a leak from my bathtub but only when the drain’s clogged. Before I pay a bunch to get it inspected, can I get any ideas? Thank you.
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How can I attach drywall directly to cinder blocks without using furring strips?

Note: the below image is distorted (curved lines) because of the panoramic picture) I had old tiles in the remote corner showed in this picture. Those came off the wall taking the drywall with them. ...
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1answer
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O or N Mortar for Fieldstone foundation on the exterior side

My house was built in 1860 and I have a field stone foundation. I have some areas on the exterior that I need to reapply some mortar on. I know some people are using type N and adding sand and some ...
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2answers
32k views

Can a washer and dryer be next to a water heater?

I have a GE gas dryer (DSXH47GGWW) that is currently next to an exterior basement wall. I'd like to move it to the opposite wall (shared with the crawl space) right next to the water heater next to ...
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3answers
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Benefit to running electric wires through walls vs attic/basement? 1-story house

We're planning on getting some updates to the electric wiring in our house. Installing more wall outlets, removing some knob & tube in the attic, installing GFCI outlets in required places, and ...
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3answers
110 views

What amperage rotary hammer drill is needed to drill through poured concrete?

I need to drill 3/8" diameter holes, at a 45 degree angle, into my poured foundation basement walls to inject polyurethane, in order to prevent shrinkage cracks from leaking ground water. There ...
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What is the right way to insulate a cinder block basement wall from inside when you only have room for furring strips and drywall?

The wall behind the toilet in the bathroom I am renovating is cinder blocks When this was finished the wall was first covered with some black paper (like tar paper but thinner) then they installed 1x4 ...
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2answers
93 views

Basement water seepage management

My house is built into a slope, with the bottom floor partially underground. See photo 1 - grey wall is a common wall with my neighbor, the white back wall is entirely underground, and the left wall ...
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2answers
112 views

How to level an already settled bath tub?

I have a bath tub installed in my basement. The tub's front and back long sides are leveled. but not left and right side. The tub is about 1/4" off towards back from both the sides. I don't see ...
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2answers
35 views

Maximum slope for Vinyl flooring installation

Dear Home Imporvement Experts, I'm looking to install Vyinl flooring in my basement ( with subfloor like Dricore ) but the floor in basement has a slope of ~3.7-4 inches for 24 ft. Will it be ...
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3answers
86 views

Basement Framing Drifted ½" Away From Starting Point

I managed to make a hasty mistake last night when I was putting up some basement framing on my DIY project. I didn't realize the bottom plate of a 16' section drifted ½" away from the foundation ...
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0answers
77 views

Is it okay to use multi-cable staples/hangers on a running board for NM wiring?

As part of a basement project, I am trying to tidy up the previous homeowner's electrical work. One thing I have encountered is a number of NM cables run perpendicular to joists and stapled directly ...
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1answer
15k views

Connecting a sump pump to sewer

I'm attempting to install a new sump pump in my basement after having a few minor flooding incidents and addressing as much of the external causes as possible (gutters, etc). The pump is only used for ...
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1answer
51 views

Air-sealing basement slab weeping tile access for radon

I have a pretty high levels of radon in the basement (~400 Bq/m3 when windows are not open), so I want to seal obvious entry points, one of which is what looks like a 10 inch weeping tile cleanout ...
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2answers
117 views

How should I insulate basement walls and floor after water mitigation?

I've an unfinished 1k sq ft basement in Chicago with 10 inch cement foundation walls. I'll be creating a family room, bedrooms, bath, etc. I have water coming thru the floor--so Im adding drain tile ...
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41 views

Basement floor tiling/ carpeting

I’ve been reading over how to tile or carpet a basement floor and I’m looking for the absolute cheapest option. I’ve read about laying a subfloor, but to be honest, I’m not very handy at all. Can you ...
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3answers
4k views

How do I self-repair a section of crumbling basement wall, or should I hire a professional?

How do I self-repair a section of crumbling basement wall, or should I hire a professional? Background: How I discovered it: I removed some exposed blue foam insulation from my basement walls to ...
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4answers
1k views

Should I cut air space in my basement foam board insulation?

I intend to finish a part of my basement following this guideline from Fine Homebuilding and Building Science. In this configuration, the foam board completely contacts the concrete. My conern is that ...
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2answers
184 views

Is it reasonable to install a utility sink in this location?

We recently moved into a new (to us) house with an unfinished basement where I would like to install a utility sink. Background: All plumbing runs through the basement, adjacent to the area where I ...
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1answer
342 views

Mystery: Water vanished from flooded basement with no floor drain

I live on a century old home whose unfinished basement got flooded this week. We had heavy rainfall which overwhelmed the city's storm sewer. At a certain point there were about two inches of water ...
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3answers
290 views

Framing basement ceiling with concrete slab

I want to finish a room underneath my back balcony. Currently four concrete walls and ceiling are bare. Real cold in winter and warm in the summer. Goal would be to turn into a storage room with some ...
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1answer
4k views

New home build - cracks in basement concrete floor

PicturesI have a new house under constructions and recently found many many cracks have developed on the concrete slab in the basement. The worst run along straight lines where the sections were ...
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Advice on moisture / efflorescence in concrete basement walls

I am finishing the basement in my 1926 house and planning to frame a proper wall against the concrete foundation - studs, insulation, moisture barrier, etc. The previous owners had painted over the ...
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37 views

Basement humidity 80-90% with unsealed concrete foundation, how can wood moisture be OK?

In summer our home in west Massachusetts has a humidity level of 80--90% for months, which according to what I read can be a serious problem. However, my pinless moisture meter measures the wood beams ...
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4answers
181 views

Moisture is leaking through my basement walls, but the house is surrounded by concrete. Worth fixing?

I'm in Minneapolis, in a house built in 1886, fully renovated a few years ago. The basement is finished. This has been an extremely wet winter, with lots of snow and ice that is now melting. Some ...
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2answers
359 views

What is this pipe in my basement?

I have a lot of water coming into my basement from a line that is next to where my water pump feeds into. It has been raining a lot lately. I found a pipe in the basement that looks like it could be a ...
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1answer
57 views

Damp patch in basement wall that is loose material when I touch

I recently noticed a damp patch in one spot on the basement wall. About a couple of inches in diameter. When I poked into it the material came off and now there is a hole. Not deep or all the way in ...
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2answers
390 views

How to get water in my basement to flow to the floor drain

I'm in an old house that occasionally gets water in the basement. The basement isn't finished so it isn't a big deal if some water comes in right now. The problem right now is that there's a drain in ...
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1answer
136 views

Insulating tiled floor in the basement?

I'm going to use Prova-Flor + 5/8 T&G OSB + Laminate flooring planks for flooring in my basement, so the total height should be around 1 1/2". I'm not sure what to do about the bathroom, though. ...
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2answers
685 views

Should I put a vapor barrier under metal framing in a basement?

I will be framing out my basement with steel so the bottom track will be on the concrete slab. Is it required to put some sort of vapor barrier between the slab and the track? I couldn't find anything ...
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1answer
59 views

Daylight basement remodel, found mold on what appears to be drywall between exterior siding and studs. Do we need to remove ALL the siding to repair?

While working on removing paneling in the daylight basement, we discovered mold on what appears to be black papered drywall in between the exterior siding and the studs. This was pointed out during ...
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2answers
2k views

basement floor crack widening in newly built home - is this a problem?

Our home was new construction and the basement floor was poured around 1.5 years ago. The builder installed control joints in several locations in the basement slab. Several of these joints have ...
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2answers
570 views

What shouldn’t be dumped into a basement dump sink?

We have a dump sink in the basement that uses a pump system, much like a closed sump-pump, to force the water up into our main drain out of the house. Because the pump system holds a bit of water ...
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3answers
2k views

Do you to block a unwanted 4 inch hole or reuse it for something else?

Have 4 inch hole was made by builder for no reason and went unnoticed for long time as the hole was in the side wall of the House. the hole is through a basement wall. How can I permanently block the ...
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2answers
644 views

Should I remove cold cellar wall insulation below grade to allow ground heat to warm the space in winter?

My house in southern Ontario, Canada, has a cold cellar under the front porch. The house also has a sump pump, located in the cold cellar. The builder insulated the perimeter basement walls, ...
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2answers
270 views

Insulating basement concrete walls - anything missing?

Live in Zone 5b, going to shoot for 2" of XPS DOW foam board. Planning on gluing it to the concrete wall with foam board glue and bracing it while it cures. It will run to either the top edge of ...
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2answers
3k views

How to stabilize a wooden lawn mower ramp over stairs?

I'd like to build a ramp for a lawn mower that is in the basement. The only way out is a set of stairs with a very little space to turn to them (that's why the ramp doesn't extend all the way to the ...
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3answers
151 views

Light in basement with no switch?

In my basement there is a light socket that is always on. We have checked every switch and there does not seem to be a switch attached. I followed the electrical line and it’s only connected to a two ...
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1answer
6k views

What does blocking refer to in relation to floor joists?

This question was triggered by the following line in a home inspection: Blocking is not installed for I joists above beams in basement. I have found pictures of blocking at http://www.diychatroom....

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