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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4
votes
3answers
1k views

Is it okay to protect NM Cable in an unfinished basement with ENT?

Adding a 20 amp subcircuit (120V) to furnace room to turn it into a workshop. Initially it will have one duplex and 2 fourplex receptacles, the fourplex receptacles will be on cement walls, the duplex ...
1
vote
1answer
88 views

On wall near floor or ceiling for supply ducts in basement

I'm starting to finish my basement and I'm curious if I should put my supply ducts in the ceiling or the exterior wall near the floor. I have the configuration to easily do either. Any thoughts on ...
3
votes
3answers
308 views

Re-framing basement walls after flooding. Drain tile with no concrete?

Im getting ready to re-frame basement walls after basement flood (shocking images attached). I'll be doing this for every wall portion that can possibly flood: 1) ridgid XPS foam insulation ...
3
votes
1answer
59 views

Uses of a damp basement

I have an old brick house (1960s) next to a river, the ground surrounding the house is normally wet. The basement is very humid and just use to store stuff that can't go bad. I will most likely get ...
1
vote
2answers
1k views

Suggestions on finishing a concrete vault

I have a newer home that the builder put a concrete vault in. It is basically the porch that was dug out fully to make a room under it with a steel security door. The concrete porch is the ceiling. ...
0
votes
3answers
182 views

Reducing humidity with a fan: top or bottom?

In the basement of my apartment block we have several little storage rooms (~65 sq ft), one for each tenant. Inside of mine the humidity gets a little high to my liking because although it has 2 holes ...
1
vote
2answers
523 views

How to install hydronic radiant heat over concrete slab

I'm trying to figure out the most ideal way to install hydronic radiant heat in my basement over the existing concrete slab. I've looked at several products for heat distribution, like Warmboard, ...
2
votes
5answers
10k 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 ...
2
votes
1answer
43 views

Fanning outside air into basement apartment

I am refinishing my basement into a 1BR apartment and I happen to have an easy access to intake outside fresh air and fan it into the apartment. I was planning to have one of those standing AC units ...
3
votes
1answer
87 views

open cinder block wall in basement

I am replacing some framing and sheet rock that has been contaminated by mice. The basement has cinder block walls that come up about half way for some reason. The house was built in the 1950s. In ...
0
votes
1answer
33 views

Do I need a vapor barrier on an 8" pour + carpeting over tile?

So I am finishing my basement and the side I'm finishing has an extra 4" pour on it as well as old 8x8 asbestos tile. My plan is to carpet over it. Do I need a vapor barrier? I get that concrete is ...
3
votes
1answer
161 views

What length of Tapcon/ramset nail for base plate?

I'm wavering back and forth between installing a my baseplate to my basement floor with either tapcons or ramset. Tapcon Pros: Can use existing impact driver and only need to buy Impact bit set ...
1
vote
3answers
84 views

New Basement Floor, house not framed yet

We are building a new house with an exposed basement. I had the floors poured a week ago while still warm in December. We have not framed the house up yet, meaning no deck, walls, roof, or HEAT. My ...
3
votes
1answer
117 views

What is this this square hole in bathroom rough in used for?

I have a plumbing rough in that is located below grade in my basement. The system consists of a 2" sewer pipe and a toilet rough in connected to an ejecter tank. In the middle there is what appears to ...
1
vote
1answer
110 views

BASEMENT EMT CONDUIT + 12G THNN WIRES + NM-B

Sometime I started (slow pace) the rewiring process of a large mansonry house. Overall I intend to use EMT conduit inside walls, and in the attic mostly bx/mc conduit. Will mostly use 12G THNN and ...
0
votes
0answers
33 views

Partially Finished Basement. Do I need electric on concrete walls?

In my basement the inner walls are finished with paneling, and have electric. The outer walls are just painted concrete block, no electric. By code, should the outer walls have outlets every x feet ...
1
vote
2answers
265 views

how to attach framing to this window in concrete?

I'm looking to finish my basement. I have several windows embedded in the concrete as shown in the picture below. I was planning to put framing up in front of the concrete and run some plywood all ...
2
votes
1answer
94 views

Can I get bathroom permit in old house (1950s) which doesn't quite meet modern codes?

I want to add bathroom in my basement. The house was build in 1950s so its old. The basement ceiling hight is not great, max 7 ft (unfinished area). I have had couple of contractors and plumbers come ...
2
votes
6answers
335 views

How do I remove or cut a sewer pipe at edge of our basement slab?

What's the best way to remove the unused sewer / storm-drain pipe in the attached picture? It's coming up through the edge of our basement slab where it meets the foundation wall? We want to remove ...
0
votes
1answer
106 views

Replacing basement door and walls with a hatch

I'm trying to remove the structure that leads to the basement. (see sketch 1). Once removed, there will be an empty space like (see sketch 2) My aim is to build over it, a simple door (see sketch ...
3
votes
3answers
179 views

Allowing basement floor to breathe

I'm working on remodeling a basement and the plan for now is to install a subfloor (XPS rigid insulation and plywood on top of that). For the actual floor, I was thinking of using vinyl planks that ...
0
votes
1answer
41 views

Add bracing to I-Joist

I am trying to build a non-load bearing wall parallel to the I-joist in my basement. I know that I need to add bracing to span the gap between the wall and the joist, but I am slightly confused as to ...
0
votes
2answers
72 views

do i need a vent for my new home basement plumbing rough-ins

I have a new home with rough-in plumbing in basement and I was wondering if I need a vent down there. I do plan on putting in bathroom
12
votes
4answers
58k views

What is the proper way to run wires along/across basement ceiling joists?

I want to add an electrical outlet in my unfinished basement. It makes sense to run the wire along the ceiling because that's where all the other wires are. What is the proper way to install NM ...
1
vote
4answers
215 views

Tile basement bathroom over cracks without Ditra

I am tiling a basement bathroom that is 5 feet by 6 feet. It has a crack running the entire length of the bathroom as well as a small hairline crack near the toilet. I've read that Ditra is the best ...
5
votes
1answer
194 views

What are these 3 thin lines draining into my sump well?

There are 3 thin lines draining constantly into my sump well. The lines are coming through the concrete to the best of my knowledge because i can't trace them on the walls or ceiling. I am having a ...
3
votes
3answers
208 views

Saddle valve problem

My humidifier is supplied from a saddle valve. I don't think that there is much flow to the humidifier. What is the best way to rectify this problem
2
votes
2answers
122 views

What are the considerations for crawlspace encapsulation barriers / humidity control?

I live in a house that's half slab, half crawlspace. The crawl is half basement. Typical crawlspace/basement humidity readings are: 80% RH @ 67°F 85% RH @ 68°F 78% RH @ 67°F Where in the ...
8
votes
3answers
1k views

Do drain pipes (house to sewer) freeze?

My basement drain is backing up a bit recently. Before I call a plumber, or rent an electric sewer snake from Home Depot, can sewer pipes freeze? It is January after all (and my house is in Canada).
0
votes
0answers
44 views

Basement door threshold minimum elevation

I have a basement that is only about an inch or less above the rear patio leading to it. The patio is below grade and its only water escape is a storm sewage drain in the center. How can I reasonably ...
4
votes
2answers
328 views

What's the right way to insulate and frame around this pipe?

I have been studying the latest engineering on how to insulate and frame basements after tearing out a partially finished basement that had wood and insulation in direct contact with the concrete. ...
0
votes
1answer
78 views

Where did all the water in the basement come from.

I'm looking at an REO property that has been "winterized" and I am a little concerned about the conditions in the basement. There is roughly 3" of water ( ice ) in the basement. The furnace and hot ...
1
vote
2answers
152 views

What is the best and least expensive way to update my walkout basement? [closed]

I have a walkout basement that is paneled and has a dropped ceiling with out a ceiling grid. In need of serious updating, but I have already put so much money into this house, I am looking for the ...
3
votes
3answers
141 views

How to run wire through steel garage floor system

We are building a carriage house, with a 4 car garage and a basement underneath. The basement has steel I-beams and the metal b-decking that the garage floor is poured on top of as a ceiling. What ...
0
votes
3answers
68 views

Basement egress through office

I have a question that is similar, but different, than: Can I have an office in my basement without egress? I want to finish off my basement as such: My question is, by putting the red walls up, ...
1
vote
2answers
51 views

Water in Basement - Help!

We live in flood plain area and we have a high water table. For some reason our home has a basement. We have lived there almost 15 years and our basement has flooded 3 times when it rains a lot. There ...
10
votes
3answers
2k views

Why are there metal tabs protruding from my poured concrete foundation walls?

What are these metal things sticking out from my basement walls? Can they be removed? If so, how?
3
votes
4answers
293 views

Ramset nails not flush with basement frame wall

I built my first wall in my basement when I started to frame and I bought the Ramset MasterShot 0.22 gun from Home Depot and read up on everything and when I used it to nail my treated 2x4 to the ...
2
votes
1answer
201 views

Basement drain without a trap

What do you do if your basement đrain doesn't have a trap? I tried shined a flash light down and the pipe just goes straight down. The house smells and 3 buckets of water have not helped.
0
votes
1answer
41 views

How many coats of spray paint do I need?

I am working on finish my basement. The idea is that the ceiling is going to remain unfinished but spray painted pitch black to hide all the wires and plumbing. Last weekend I did one coat of spray ...
1
vote
0answers
71 views

What kind of soil mix to use for grading the perimeter of house to keep water away from basement?

To help divert water away from my home's foundation, I am trying to improve the grade of the landscape around the perimeter of the house. I suffered a flooded basement (about 1" or so) from ...
3
votes
2answers
235 views

What type of cleaner should I use to remove a puke stain from concrete?

My cat puked on the basement floor in a couple places, but I can't seem to clean the stain. So far I've tried simply mopping with Pine-Sol®, which didn't work. Then I tried scrubbing/mopping with ...
3
votes
4answers
125 views

Should I use spray foam to insulate a basement?

Home in CT cape w/ uninsulated basement. Its a cold, not drafty house, with new Marvin integrity windows. The basement is very cold, and it seems like the cold basement is making the rest of the house ...
1
vote
1answer
247 views

How to build a wall under duct work

So I'm trying to finish my basement. I have a conundrum as to how to build a wall under a soffit. Here's my situation - I have an HVAC duct that is running really close to the wall - like maybe 1.5" ...
3
votes
3answers
251 views

How do I drywall a corner with a lally column?

I'm finishing my basement and I've come across this lally column which is supporting a steel beam. I want to frame an external corner for this interior wall at this "corner" but the distance from ...
2
votes
2answers
133 views

Do I need to insulate the entire basement or just a few walls?

I have a 1920s house with concrete foundation that had a semi-finished basement. After a recent 3-day rain storm, my basement flooded (about 1") due to hydrostatic pressure. It wasn't just my house -- ...
1
vote
2answers
871 views

Installing permanent support column in the basement

I'm redoing a basement after flooding and just found this little hack. Apparently previous owner removed permanent support post for some reason and then at some point installed this temporary jack ...
1
vote
0answers
38 views

How do you insulate with XPS around interior basement windows?

I'm using 2" XPS to insulate my interior basement walls. How do I work around windows? Do I cut it flush with the concrete opening? Do I spray expanding foam to seal the XPS against the concrete ...
1
vote
2answers
279 views

Foundation drainage: try interior first and then exterior?

My wife and I are closing on a home. During the initial walkthroughs of the basement, it was clear that there was a moisture problem there, but I don't think it was clear to either of us how severe ...
0
votes
0answers
27 views

Water infiltration between basement “bulkhead door” enclosure and concrete foundation?

I've got a fairly common below-grade basement door setup; a doorway thru the poured basement wall into a space enclosed with cemented cinder blocks and a roughly poured floor, containing wooden stairs ...