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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1answer
12 views

How to trim exterior basement window

I just put in egress basement windows in my 1950s house. The issue I'm encountering is that they didn't use forms so the exterior concrete is super rough and doesn't give any easy solution to trim. ...
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1answer
54 views

Basement Steel Stud Framing with 1.5" Float

How does one frame a basement with steel studs where 1.5" of float is required? I reached out to the inspector and he said "...use a bottom slip track deep enough to accommodate 1 ½” of ...
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1answer
656 views

Basement Subfloor — EPS + Plywood

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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0answers
23 views

Lavatory bubbling

My house has 3 bathrooms: basement, main floor, second floor. After someone takes a shower/bath or flushes in the basement bathroom, the main floor lavatory starts to bubble. Should I call a ...
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2answers
590 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
237 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
101 views

Basement Floor Feels Uneven

I recently purchased a home with a full finished basement. The home was built in 1988. No foundation or structural concerns were noted during the home inspection. There is carpet in the basement. The ...
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4answers
944 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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1answer
105 views

Drywall joint/edge against pipe ok?

I'm wrapping up the design of my basement ceiling. Going with drywall to save an inch or so. One problem area I have is right at the bottom step to the basement there is a heating pipe that cuts ...
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3answers
1k views

Should I add air ducts when finishing my basement or rely on space heaters?

I am going have a finished basement of 1000 sq/ft which includes a theater room of 12X16. Currently I am in process of planning in stalling duct work to my basement. I am thinking of not putting duct ...
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0answers
13 views

Backwater valve access sleeve preventing bathroom work

I want to install a toilet and small sink. These are just temporary until we do a more complete finish of our basement in the future. However, the backwater access valve and sleeve (dark pipe ...
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4answers
13k views

Will adding a cool air return in the basement help with summer AC power usage?

Pretty much the title. I have a full basement. Part of it is unfinished and has the water heater, furnace, and washer / dryer. The other part (roughly 1/2 of the total space) is partially finished. It ...
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5answers
11k views

Horizontal fire blocking when using rigid foam in basement?

There are lots and lots of how-to's out there on how to put rigid foam against a concrete basement wall before putting up 2 X 4 framing. Seal the joints, etc...doesn't seem to complicated. On to ...
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2answers
7k views

1“ x 2” Furring Strips for Drywall Ceiling

In my basement, there's currently a tile ceiling that's installed on furring strips attached to the joists. The furring strips are 1"x2", attached to the joists by nails. We're currently replacing the ...
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1answer
30 views

Identify a pipe coming out of the basement floor, as well as a hole in the floor?

I want to build a bathroom in the basement with a 36”x36” shower. I am trying to figure out if this pipe is the vent from the main drain.
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3answers
94 views

Would insulating a basement wall with XPS and reflective insulation create a moisture problem?

I'm in Massachusetts (ICC 2015 w/ mods) and want to finish my basement walls. I'm thinking about using a combination of 2" XPS, 1x2s horizontal 24" OC, Reflectix (double reflective ...
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1answer
242 views

How do I disable the battery water level sensor on watchdog sump pump back up when I replace it with a sealed battery?

I am replacing my sump pum back up battery with a sealed battery. What do I do with the battery level water sensor?
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2answers
45 views

Best Lighting options for Long Basement

I have a half basement that I'm keeping open and its 45'x12'. I had always planned on doing a drop ceiling with recessed lights but I'm wondering if there is a better option considering the length of ...
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3answers
1k views

Central Air condensate is pumped into a hole in the basement floor?

I’ve tried to do some research on this topic but am a little confused and would like to know if I’ve got a problem here that I need to remedy. I think I want to install a self-draining dehumidifier in ...
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1answer
563 views

What are the best options for rock, for french drains?

I'm installing a sump pump and a bit of drain, in a clay soil basement that happens to have a spring. It is silty fine clay that has a habit of migrating with water and clogging everything. What are ...
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2answers
59 views

Overthinking basement flooding prevention?

I've been recommended by two companies now to install an interior vapor barrier along my basement walls to prevent the water that is shooting out during heavy rains. The vapor barrier will stop water ...
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2answers
668 views

Attach XPS to back of stud framing?

In the basement that I'm finishing I have an irregular, rough stone foundation wall, pretty dry. I'll use 1" XPS foam insulation, then drywall. Can I build the framing on the floor, attach the XPS to ...
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1answer
47 views

Flooring Options for Basement with Uneven Concrete Slab

Working on a basement remodel and getting to the point of needing to figure out flooring. Unfortunately, the concrete slab is generally uneven. I had a company come in and grind the floors a few ...
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0answers
47 views

Will a backflow preventer cause clogs in a basement drain?

I have a backflow preventer basically in between my main plumbing stack and the basement bathroom. There’s never been a bathroom down here until now; it’s just been roughed in for the last 30 years. ...
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1answer
498 views

Water on block foundation wall

I have water on the top 4 feet of my basement foundation wall. This goes around almost the entire perimeter of the basement. The bottom 4 feet of blocks are dry. Any ideas the cause? Can someone ...
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1answer
59 views

Framing a basement column with off-center 2x6s?

I'm going to frame a column in my basement, but I need it to include a few outlet boxes (one for power, and one for speaker). All the videos I've watched show 2x4s being ramset into the columns dead ...
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1answer
138 views

Ejector pump instead of sump pump in basement

I need both groundwater drainage as well as laundry room sewage pump in basement. Should they be separate pumps (asump pit with pump and 40 liter sewage ejector reservoir with pump) or could ground ...
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5answers
41k views

Can the blanket Insulation in my basement be left in place when refinishing?

I'm thinking about finishing my basement. It currently has the blanket insulation that the builder installed when we built the house last year. I'm unfamiliar with this product. Is it meant to be used ...
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1answer
38 views

Basement Insulation/Vapor Barriers

Doing research prior to attempting a DIY basement finish. Never had moisture issues (sealed prior to move in) since we've been here (10yrs), walls are all below grade (no walk-outs). no insulation ...
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0answers
15 views

In a tight spot with Venting a bar sink in basement

We're adding a bar sink into the basement of our house while we are finishing it. The location is at a place where we can attach to the drain just fine. The issue I am running into is that I am not ...
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2answers
5k views

Is it OK to block off an unused root cellar to mitigate moisture problems?

I have a root/cold cellar underneath my front porch. The walls appear to be poured concrete as I can't see any bricks or cinder blocks. The room sweats like crazy so there is an obvious moisture ...
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2answers
355 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
46 views

What is this vent called?

Hi I need to get this vent/pipe replaced but I don’t know what it is called. Can anyone identify it for me. It’s in my basement near the furnace.
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3answers
63 views

How to hang exhaust fan with limited amount of space?

Ive added a small bathroom in my basement with a drop ceiling. I have limited amount of space to work with. Is it ok to use chain to hang my exhaust fan?
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1answer
257 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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5answers
97 views

CSST Gas Line is a Couple Feet Too Sort

I'm finishing my basement ceiling which includes building a bulkhead around ductwork, plumbing and two CSST gas lines. When the house was built (2002) the contractors used just enough of the CSST to ...
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4answers
72 views

Condensation on just 1 duct in unfinished basement

We live in the Northeast (PA) and have a new construction home that we have lived in for a year. The home is small (1300 sq ft, open concept first floor) with an unfinished basement. The ceiling of ...
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0answers
18 views

Installing Dri-core floor panel after framing. Do the panels still need the 1/4in spacing?

I assume the spacing is to keep the lumber off of the cement walls. I used rigid foam panels on all exterior walls already. Any reason not to butt the panels all the way up to the framing? Also. ...
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1answer
28 views

How do I build my basement bathroom so that it aligns with existing in ground plumbing?

I’m preparing to finish my basement. This is a 2008 house with drain plumbing already built in to the existing concrete to support a bathroom. Assuming tub/shower drains are in specific locations, how ...
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1answer
31 views

Sealing 2-ft square hole in cement beneath tub

We are having our bathroom in the basement redone. Having a tub installed and the installer cut a 2 ft wide hole in the floor beneath the tub. after the tub is installed I was told that they no longer ...
5
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3answers
35k views

Renovating interior stone basement walls

We have a 100 year old house, and I would like to finish the basement but leave the stone walls exposed. I believe the stone can look great, but the mortar needs some work, and I am mostly focused on ...
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3answers
62 views

Where can I install a C-Wire for Weil-McLain gas boiler? (EGH 115, 4 Series, Natural gas)

I want to install a C-wire so that I can use a WiFi Thermostat. Behind my current thermostat there are only 2 wires (red and white) There are 2 wires tucked and unused, (green and blue) I had tried ...
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1answer
224 views

Sill plate pushing siding off, causing gap for mice and moisture?

Younger home owner here. I've had water get into my basement a few times last spring in the corner and in this area (directly under my little front deck). The corner was due to no downspout (water was ...
2
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1answer
169 views

Question about fixing footer drains with no access

House is in Midwest. Built in 1997. In 5 years we have had water come in at the same spot via the basement floor 2 times. Once during a massive spring rainstorm and once when 4 feet of snow melted ...
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0answers
42 views

What is this sealant on my basement waterproofing system?

I'm redoing my basement floor and have a plastic channel system protecting against water intrusion around the edge of my basement (I believe it's an "All-Dry Basement Systems" product, but ...
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1answer
44 views

Should I Install a sub-panel, IN PLACE OF of an unused hot tub disconnect, for a basement project, and will I need to change the main breaker?

I have removed the hot tub disconnect and pulled the 4 wire (6G) back into the basement. This line comes from the main breaker panel on a 2-pole 50A breaker. My plan is to instal a basement sub-...
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1answer
82 views

Are GFCIs now required in all unfinished portion of a house?

I was really surprised that a city inspection did not pass based on regular outlets in an unfinished room in the basement. They are correctly jacketed and all of that stuff. They are simply ...
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2answers
83 views

How to stop moisture/condensation in basement?

I have a dirt floor basement, more like a mud basement I should say. My copper has a lot of condensation, my duct systems and sometimes even my panel box which really concerns me. The ducts and ...
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2answers
48 views

Basement partition wall sole plate - do I need sill plate gasket?

I am building a bathroom in my basement. It's not a remodel, it's a fully new room from the concrete floor up to the joists. The partition walls will not be touching the cinderblock foundation; there ...
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1answer
2k views

Venting basement bathroom rough in

I'm a DIY-er with a lot of experience in some phases of construction but not much in plumbing (so please be nice to my dumb questions!). I'm finishing a basement with a full bathroom, and thought I'd ...

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