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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74 views

Should I be concerned that my sump pail is regularly half full?

We moved into a 1960 split-level house in central New Jersey about a year and a half ago and since then I've noticed we seem to have a high water table. In the sump pit the water level is always ...
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69 views

Determine severity of foundation crack

I have a crack in my foundation that previous owners had filled with epoxy. The crack has opened up slightly at some point in the last 8 years. Is there anything I can do to determine (short of ...
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22 views

Close up drafty gap between wood beam and concrete wall?

Lots of cold air coming through a variable narrow - about 1-2 cm (0.5 in) - gap between a wooden beam and the concrete wall in the basement (image 1 below). What can I fill it with? Worried about ...
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13 views

Should I install acoustic insulation in ceiling in basement with switchback staircase and no door?

I'm finishing my basement. Is it worth it to install basic insulation or sound barrier insulation like Rockwool since there won't be a door at the bottom of the staircase? Above the basement living ...
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31 views

Basement Bath Drain/Vent Help

I'm finishing my basement, and adding a bath in the process. I'm hoping to get some help with drain/vent questions. The current stack is right in the middle of where the new shower will be. I'm moving ...
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3answers
71 views

Drywall repair with cut wall studs

We've just had a french drain installed around our basement. In a couple of places, it was necessary to open a hole in a (non-load-bearing) wall, leaving both a hole in the drywall and a cut stud: I ...
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1answer
51 views

Insulating Basement

Our unfinished basement has hollow cinderblock walls and I am wanting to insulate it and drywall the basement. Our house sits on a slope so the font of the house, including the basement, is ground ...
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3answers
98 views

Why did water come up through my basement drain instead of out the sump?

I recently moved into a home in Illinois that has a basement. I’m coming from Arizona and have never had a basement or actually knew about sump pumps until I started searching for a home. Me and my ...
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2answers
45 views

Insulating against brick in rim joist bay

I was hoping to air seal and insulate the rim joist in my basement. This is a balloon-framed house in zone 5, so the bays are open to the floor above. At some point brick and mortar were put in the ...
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1answer
25 views

Slight sewage smell in basement and sump pump

we started noticing an occasional sewage smell in the basement. It comes and goes. I can't figure out its cause or source. I suspect it is somehow tied to the sump pump. The sump pump was replaced by ...
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46 views

Options for sealing off basement crawlspace

The "crawlspace" In the back left upper corner of my basement, a hole was made to enable the addition of a powder room on the main floor 15+ years ago. The basement walls are concrete and the hole ...
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1answer
22 views

Exterior Wall - Stacking Fiberglass insulation and Mineral Wool insulation

I am in the process of finishing my unfinished basement and had a question about stacking insulation. When framing the basement we realized we have alot of areas which have about 6~ inches of extra ...
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1answer
41 views

Vertical crack in foundation

I live in a condo and I have a vertical crack in my foundation in my basement. A company came out twice to prime flex seal the crack which lasted for a year. unfortunately with recent rain it appears ...
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62 views

Mid project finishing basement: should I rip out new framing?

I am learning that the wood framing that has just been installed (glued) in my basement really should have come after putting in continuous foam board insulation against the wall, separating the wood ...
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1answer
52 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
47 views

Kitchen drain causes basement laundry drain pipe to overflow

We have a setup where our washer is in the basement directly below our kitchen sink. From the looks of it they both drain directly into the same sewer/drain line. To the right of the washer is a floor ...
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1answer
53 views

Unfinished basement electrical re-wiring, protecting cables on cinderblock, also corrosion concerns

My basement has old electrical wiring, looks like it was a replacement for some even older knob and tube (which they largely left in place of course). While they did wire up lighting somewhat, though ...
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2answers
182 views

Weird orange rust spots appearing in holes on freshly painted basement cinder blocks

I've started to paint my basement with white primer, and on one wall weird orange spots appeared in the holes I had "filled" with the primer. The wall is made of dark cinder blocks which are pretty ...
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58 views

Do I need to insulate my basement?

I am currently finishing my basement and wondering if I need to insulate my basement. I have already framed all the walls. I have a below grade basement and the temp is pretty consistent. Local code ...
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1answer
56 views

What are my options to replace this window?

So, I've got these short 11x32 inch windows that are original to the house, there's five of them. They're metal, single pane, and have large gaps between the frame and window. I've tried going to the ...
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2answers
66 views

Proper way to secure a basement post to a metal I-beam

A home inspection noted that the center beam in our basement was not secured. What is required to secure a beam to a column, and is it really required? The house is in Oakland Co, Michigan, so ...
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1answer
38 views

Crack on basement wall/foundation wall

I noticed a crack on our basement wall or foundation wall (not sure what to call it). Our house is fairly new, built on mid 2017. We have a finished basement so there's no way to check the crack from ...
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38 views

Should I install a subfloor if I'm putting LVP in my basement?

I live in an area with temperatures from -7°F to 118°F. I'd like to put Luxury Vinyl Plank (LVP) in my concrete basement, but I've heard conflicting reports on if I need a subfloor. Some assumptions: ...
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1answer
68 views

Do I need so many fasteners and an edge gap for a basement subfloor on concrete?

I'm getting ready to install subflooring in a residential basement, which currently has exposed concrete slab. The concrete is well-cured (50 years) with no moisture problems. The plan is to lay down ...
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1answer
75 views

Basement walls above grade are wet outdoors after rain

I would appreciate any tip, help on diagnosing the symptom below. Been searching online to help diagnose symptom of "wet patch on exterior wall after rain". Did find several useful resources, ...
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1answer
67 views

How can I change planes with a row of copper water pipes?

I have five 3/4 copper water lines coming into my mechanicals room along the ceiling - so they are nicely lined up in a horizontal plane, parallel to the plane of the ceiling. However, our manifolds ...
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2answers
143 views

Do these materials typically contain asbestos?

Update I tested samples at a local asbestos certified lab and all came back 100% clear of asbestos. Thank you all for your advice. I’m new here and a new home owner. Just purchased a condo in a two ...
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2answers
201 views

Does anyone know what this metal thing in the corner of my basement is?

I don't know what it is. It's sticking out of my wall. Does anyone have any ideas? It looks like a piece of metal. And lately, I've seen some dampness and water pooling on it a bit. And the area where ...
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1answer
47 views

Sister 2x10 joist with a 2x8

We are looking into continuing work on our story duplex basement. Our basement in most areas is anywhere from 6.1 to 6.5 feet. I am looking to gain an additional 2 inches of head room. Right now the ...
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1answer
37 views

Basement shower construction, 2 parts!

Question one: I have a 5 inch cast iron drain pipe roughed in. Is there an adapter to put on the drain to get it down to 2 inches??? Without me having to bust the floor up and change it ...
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1answer
17 views

Framing a knee wall in front of a 1/2 height foundation wall with windows

I have a light basement with 3'6" foundation walls with windows framed above. The finished height of the window sill is 5" above the concrete sill. I want to frame a knee wall in front of the ...
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1answer
45 views

Basement framing around finished window

I'm framing my basement using steel studs. I have this sliding window on the window well (see picture) that already has a finished framing all around and is flush with the concrete wall. How do I ...
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2answers
81 views

Should I level my basement floor if installing a subfloor?

I'd like to install a subfloor in my basement including that dimple stuff to allow moisture to dissipate. Currently, it has sheetrock walls and trim with painted concrete flooring, but that's it. A ...
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2answers
48 views

Sewage pump sounds like running dry

We have a sewage pump in our basement. We didn’t install it but inherited it with the purchase of the house. I believe the basement was updated in 2014 with a bathroom, hence the sewage pump. The last ...
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1answer
54 views

May I block off all windows in a mostly below-ground basement?

I have read Is it necessary to put a special egress window in a basement bedroom if there's already a window above ground. My situation is similar but different. My basement has a furnace, a ...
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1answer
47 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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1answer
48 views

Repair basement stud walls after french drain

I had a french drain / water management system in my basement to deal with leaky walls, and as part of the installation the contractor had to cut in around my foundation. To give themselves room to ...
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3answers
1k views

Replacing 2-prong outlets in basement - existing wiring has two hot wires, one neutral?

I'm replacing the two-pronged outlets in my basement with 3-pronged grounded outlets in the United States (Illinois). All the wiring is in metal conduit with metal conduit boxes, which are grounded ...
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1answer
55 views

How to extend ductwork a few feet due to soffit

I built a soffit around my ductwork in the basement. There was originally air vents coming out of the ductwork to heat/cool the basement. However, with the addition of the soffit, the vents are now ...
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1answer
84 views

Is it normal to have flooding in basement after radon mitigation system installed?

I have been experiencing flooding in my basement. I think the water is coming from the pipe installed in slab for radon mitigation. I don't believe the basement was flooding before (I just closed on ...
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1answer
65 views

Foundation flooding caused by new septic line

We've been living in our house for 10 years, and a few years after moving in our sewer line began backing up every 6 months or so. Each time, we'd have to pay a plumber to come in a "roto root" or ...
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1answer
46 views

Safety concerns and precautions in setting up a workshop/studio in the utility room

I am considering setting up a workspace/studio in my utility room in the basement, which has a hot water tank and two furnaces. Here are the warnings on those units. Hot water tank: Furnaces: I ...
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2answers
134 views

Dark (damp) spots on concrete basement floor

I live mid-block (houses on both sides), in a 1906 city row house with brick basement walls and a cement floor. We never have water in the basement. We have dark spots that get lighter and darker but ...
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22 views

Interior Wall French Windows

Does anybody know where I could find, reasonable priced, french windows that I can use in an interior wall for my finished basement? (Toronto area). That means both sides would look the same. No ...
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1answer
57 views

Two Egress Windows, One Window Well

I am intending to cut out two egress windows in the side of my house. Instead of digging 2 holes, I was hoping to dig one and cut both egress windows within the same well. The well will be built with ...
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3answers
54 views

Does Homeowner's Insurance Typically Cover A Broken Well?

My well is horizontally fed through a wall in my foundation. It recently rained a lot and I believe the pipe that feeds my well has been cracked. I had to cut the power to my well pump in order to ...
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3answers
119 views

How to run 10/2 THHN outdoor wire in finished basement along ceiling?

I need a 220v (intermittent load will be 14 A max) single phase outlet about 30 feet from my distribution panel in my finished basement. The distribution panel is outside on the first floor. I do not ...
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5answers
284 views

Should bottom wall plates in a basement be treated lumber?

Question for those who are well versed in framing and then maybe some code as well. I got into a discussion the other day between a couple other trades, they were suggesting I was wasting my time ...
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1answer
48 views

Keep and patch, or replace white rigid foam during basement remodel?

I'm removing old wood paneling and drywall which is glued to (what appears to be regular Styrofoam) foam board, which is glued to a cinder block basement wall. The goal is to add more insulation (2x4 ...
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37 views

Basement drain backing up - weird plumbing

My basement drain started backing up and after giving it a good look things look odd and I'm wondering how exactly things are set up. Below is a link to a diagram I tried to make and I'll try to ...

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