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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45 views

Basement AC too cold

I live with my daughter and her family in my own basement area consisting of bedroom, living room and bathroom. I have overhead vents for the AC, and with the basement usually being cool, when the AC ...
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1answer
84 views

If my home has no footing, how dangerous is it for a contractor to install an indoor drainage system in my basement?

I have gotten estimates from some contractors for installing indoor drainage in my basement. They'd be breaking into the concrete floor around the edges of the basement, right next to the basement ...
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46 views

Two different recommendations given for waterproofing basement. Does the (far) more expensive method add value?

Sorry no pictures as this is not a personal project but instead a question about two different recommendations I was given by contractors when I asked them for estimates. The house is about a hundred ...
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1answer
60 views

Cracks in Basement Floor

We are in the process of buying a home and most of the homes we see have cracks on the floors in the unfinished part of the basements. We are worried about buying a home that is not structurally sound ...
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50 views

What is this hanging concrete ledge underneath my mother's basement window?

This winter my mother had a pipe freeze in her basement -- we had to tear out some cabinetry that the previous owner built in front of the main shut off valve, and in doing so we decided to rework the ...
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61 views

Two metal I Beams are not spliced

We viewed a home that had steel I Beams. 2 of them were end to end over a support beam but were not spliced, they were only attached to the top of the pillar via 2 bolts per beam. Very similar to this ...
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1answer
59 views

Confused about humidity levels in basement - a math problem

I can't work out the math on this one. I have a basement. The size is about 10,000 cubic feet (about 35 by 32 by 9). I bought a dehumidifier that says the humidity is 70 %. I want to get this below ...
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1answer
92 views

Why is there moisture under some new wall plates in the basement?

I'm doing a basement finishing project. When I nailed down bottom plate(treated lumber) for framing, I see some moisture appears after a while, no visible water, right under some of the bottom plates. ...
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41 views

Can I install laminate flooring over a toilet drain that has been eliminated?

I had a toilet in my basement that I don't want anymore. Whats the best way to seal it off and be able to install laminate floor over the top?
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1answer
40 views

Sump Pit Not Holding Water

Moved into a new house built in the 1970's and discovered that the sump pump was not operational. I replaced the sump pump, re-attached everything, and poured water into the dry sump pit to test ...
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1answer
26 views

Can rough in shower drain be offset below grade?

Dug out the drain box for my basement shower/tub drain. It's about 2" off from where the tub drain will line up. I need it to b 14 5/8 from the stud wall per the installation instructions for a ...
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1answer
29 views

Framing near rough in plumbing and sump pit

Going to be framing in a bathroom in our basement that has rough in plumbing. How close can i frame to a sump pit? And can framing go over a concrete drain box or do I leave a gap in the bottom plate ...
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2answers
49 views

Looking for guidance with leaky foundation

I bought a house which needs a tonne of work. I am looking for some guidance of how best to fix and repair leaks as well as clean up and seal the basement in the house. For some reason there is a hole ...
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1answer
45 views

Basement Subfloor at Bottom Stair Landing

I am in the process of finishing my basement, but I ran into an issue with the new height of the floor and the bottom of the stairs. My new basement flooring is raised ~2" (OSB nailed on top 2x2s ...
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2answers
232 views

Are the joist repairs in my home safe and correct?

As the title says, I recently bought a home and am in the early stages of finishing the basement. However, after tearing down the old ceiling tile, I found that my floor had experienced water damage ...
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3answers
120 views

How can I move this water supply line so that I can frame a wall?

Our main supply line enters through the basement floor. I need to move it about 2-3 inches out of the way because it's blocking a corner of the bathroom I'm framing in. Supply line is PEX with ...
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1answer
51 views

How to subfloor basement bathroom for tile?

I'm putting a bathroom in the basement. I need to have sub-floor in so I can install a tub and tile the floor. I was either going to use Dricore, or 5/8" OSB laid on top of DMX and fastened with ...
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1answer
114 views

Mysterious basement drain pipe?

We have a house from the early 50s that has a finished basement. In our basement bathroom, we have this open pipe coming out from the wall. For the first couple of years, nothing came out of it, but ...
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1answer
54 views

How big of a transfer grille do I need between two 500 sqft rooms if I want to balance humidity

So I have two basement rooms about 500 sqft each and I want to balance the humidity between both rooms. One room has a dehumidifier and drain so I'd like to cut a transfer grille between the two ...
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0answers
37 views

Best practices - where to run new gas line?

I want to run a gas line from my meter to a grill on a deck I'm building. Because of various outdoor obstructions, the easiest path is to run the line through my (mostly) unfinished basement. In ...
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2answers
50 views

Proper Height of Basement Weep Holes

I recently got my drain tile replaced by professionals. They poured new concrete over the new drain tile. The thing that struck me as odd was that the weep holes are partially to fully above the level ...
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1answer
43 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
61 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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0answers
24 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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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
18 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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1answer
31 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
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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2answers
46 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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2answers
65 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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1answer
61 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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48 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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16 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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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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36 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
32 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
33 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 ...
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3answers
100 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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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
47 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
89 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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3answers
107 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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2answers
52 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
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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0answers
40 views

How to affix a stud to the floor/wall when tanking a basement without 'breaking the seal?'

I'm looking into tanking a cellar/basement. It is not prone to flooding, only damp coming through the walls and floor, so the basic idea is of tanking to form a waterproof layer and then probably ...
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2answers
2k views

How do I nicely cover this floor pipe in the basement?

So I'm adding flooring to my basement and I've got this sewer access cap thing in the way. I know I need to wrap the flooring around it and then I assume I'll need to cover it with something. What is ...
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5answers
99 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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0answers
27 views

Insulating basement ceiling

My basement is currently completely unfinished. Having gone through my first winter in the home (Alberta, Canada), the floor is obviously quite cold! As a cost effective way to keep the cold in the ...
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1answer
61 views

Floating floor over old mastic?

I recently had carpet and asbestos tile tested and removed from my basement, and now am left with concrete covered with black mastic (non-asbestos per testing). I would like to cover the floor with ...
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1answer
63 views

Adding two rooms in a basement

The ceiling height in the basement is 78" (under the 7' requirement for bedrooms). I asked an inspector if it would be OK to add two rooms with closets and call them storage rooms when listing ...

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