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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What does airflow in the sump pit mean?

I have a sump pit in my basement with a pipe that comes from the drain tile. The drain tile does not see day light anywhere, it's all near the footings of the foundation. I can feel a strong flow of ...
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1answer
2k 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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3answers
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Sewer odor from basement floor drain

I'm experiencing strong "sewer odors" coming from one of the basement drains. This is an old house (meaning the basement floor drains don't have an elbow bend and instead run straight down / there is ...
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4answers
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Rim Joist Insulation without a Sill Plate

I've seen a few similar questions but the answers don't add up... I would like to use some rigid foam insulation to insulate my rim joists. Here is the problem: everything I have seen shows putting ...
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1answer
796 views

How to insulate sloped top of concrete block foundation?

I am planning to insulate the inside of my basement. I have a concrete block foundation. I am planning on going XPS board route, applied directly to wall with foam/tape on all the seams to make it ...
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1answer
969 views

Best style of window for above grade basement windows?

My basement windows are roughly 2'x3' (h x w) and the exterior sill is 6 inches above grade, and 5 feet above the basement floor. I am not particularly concerned with security beyond frustrating the ...
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4answers
5k views

Is this pipe in my basement floor intended for radon mitigation?

This pipe emerges from the concrete slab floor in a corner of my house's full basement. I believe it's a 4" polyethylene sewer pipe (narrow walls, black interior, white exterior). I can't tell if it's ...
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2answers
284 views

Bathroom toilet install - path of least resistance

I want to install a toilet in my ugly old basement and am apprehensive about how to actually do it. Here's what I have: ...and here's how my house is plumbed: So I'm trying to put a toilet on this ...
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2answers
1k 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. ...
4
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1answer
276 views

Could these foundation defects cause problems?

Attached are the pictures of newly constructed basement wall. I wonder if these defects are going to be a problem in the future? Outside of the walls have water proofing, but I wonder if these defects ...
4
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1answer
805 views

mold on basement walls

I have a basement that I am planning on finishing. There was a mold problem. After washing the basement walls, I soaked them in Concrobium. I then painted the walls with a masonry waterproofing ...
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2answers
137 views

Do I leave this insulation up?

I am researching how to finish one room in my basement, and not sure what to do with what I think is vapor barrier or wall wrap insulation. Its only on two of the four walls which I assume is because ...
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Why does my basement floor paint come off when it's wet?

I painted my basement floor and now just 3 weeks later my washer leaks and the paint is peeling off. I also put some water down on a spot and when I wiped it up you can scratch the paint off. It is ...
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1answer
1k views

How can I reduce or eliminate flaking from a limestone basement?

I have a 1902 house that was built on a limestone foundation. In the basement, the limestone blocks flake a bit which gets to be somewhat annoying having to sweep/vacuum it up from time to time. Are ...
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2answers
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How do we repair vapour barrier after a flood?

We recently had a flood in our basement which was completely finished. We have two bedrooms down there which is why I want to make sure it is fixed properly. When the restoration company came in to ...
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2answers
900 views

How much water is too much water underneath the basement concrete?

We are getting ready to install a new shower in our basement. When we had our house built about 8 yrs ago we asked to have a shower & toilet drains roughed in. I cut off the plastic cover for ...
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1answer
1k views

Is there a shower drain pipe in this picture?

I'm certain the 3" pipe on the left is the toilet drain (it is about 12" form the wall and has a rounded cap on it). I'm guessing the shorter 2" capped pipe on the right, up against the wall, is the ...
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4answers
177 views

Channel between foundation wall and floor in crawlspace

I have a split level house with a crawlspace. I've pulled the insulation out and discovered some minor mold issues on the wood framing and concrete walls. I removed the framing to replace any moldy ...
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3answers
7k views

Basement subfloor, how exactly should I do it?

I am finishing a basement with my father and want to put in a subfloor. I know if there was ever enough water I would probably have to replace the floor anyways but want to give myself a couple inches ...
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3answers
3k views

Can I install sub floor over carpeting?

Part of my basement has carpet laid 25 years ago The area is dry: never a water, mold or odor problem. We tested a small area and it was a nightmare to remove the glue from the concrete. We are ...
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3answers
1k views

Heating basement floor with water heater

Can I simply add a loop of pex from my water heater, under my flooring, and back into itself? Would I need some sort of pump? I haven't laid the tile yet and water heater is right on the outside wall ...
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4answers
5k 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 ...
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4answers
6k 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 ...
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2answers
5k views

French drain did not solve the problem

We noticed issues with our water coming through our basement cinder block wall and hoped a new interior french drain would fix them. It did not. Short Version: We just installed a new french drain ...
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4answers
1k views

How could I flatten these warped sleepers layed on uneven concrete to an acceptable level?

The concrete in my basement is, as most concrete is, very uneven. I was building up my subfloor to match an existing floor, so I got about 200 board feet of PT 4x4 and ripped 1/2" off using a table ...
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3answers
481 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
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1answer
319 views

Why do basement walls need less insulation than crawlspace walls?

I used this DoE calculator: http://web.ornl.gov/sci/roofs+walls/insulation/ins_16.html For Washington, DC, it recommended R25 for crawlspace walls and R11 for basement walls. Why would they be ...
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4answers
10k views

Should I install an indoor or outdoor sump pump, or both?

I have a full basement in a cold climate (North Dakota). The previous owner had a raw hole broken out of the cement floor that must have served as an emergency sump pump hole. We haven't had water ...
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2answers
4k views

Can I cut a hole in the brick to install a through the wall air conditioner in a basement?

I am looking to install a through the wall air conditioner in the basement. I don't want to block the one window. There is already a window in the brick. I don't know if there is any kind of ...
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2answers
14k 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, ...
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2answers
5k views

How far does a basement egress window well need to stick out above ground?

Is there code on this? I am having an egress window well installed today and was surprised to see the window well sticking out 2 feet above ground (1 foot if you count all the new dirt they mounded up ...
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2answers
16k views

what should i use to wire this bathroom?

I'm in the process of finishing my basement. So far, framing's done, HVAC ductwork's done, and I'm now working on the electricals. So I've got a 60amp subpanel bringing in power, and off of this, I ...
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3answers
17k views

Attaching non-load bearing walls to steel I-beams

I'm preparing to remodel my basement. A steel I-beam runs the length the of the basement with vertical steel columns spaced periodically across the span. The beam is 5" wide and 8" tall. I'm ...
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4answers
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What is the best flooring for my basement?

I live in Michigan, where humidity is fairly high. I have a 70 pint dehumidifier that works great. I also have a sump pump and water powered backup sump pump. I am looking to floor my basement ...
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2answers
10k views

Vinyl tile installation over a concrete basement floor with moisture

I would like to put some sort of flooring over part of my basement. Something with the look and simple installation of an interlocking garage tile (example) would fit the bill -- this isn't a living ...
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3answers
849 views

Water dripping from basement ceiling during heavy rain

I would appreciate direction on investigating this water issue further: I have had water dripping (from ceiling) during heavy rain , along inside wall of basement only on one side of the house. ...
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3answers
758 views

Would drilling a small hole through joist / sole plate cause structural problems?

New home owner. I need to wire some ethernet and coax across the basement up into to the first floor wall. The perimeter wall is cinderblock, it is a twin and this is the shared wall. It looks framed. ...
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1answer
1k views

What is this hole in my concrete basement floor?

I've striped my basement floating floor, as I want to have a epoxy/polyurea flooring installed. I've found this hole, with a plastic frame, under the floating floor. It was covered with some ...
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2answers
4k views

Painting a basement fuel oil tank

I have an old 275 gallon fuel oil tank in my basement. It is showing some signs of rust. Am thinking that a new coat of paint would be a protective measure. What kind of paint/primer should I use? ...
3
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1answer
99 views

Is my plan to drain foundation wall water reasonable?

I am in the process of building out my basement and see that I have water in the cinder block walls. I have a plan but I don't know if it will work and that is why I am posting this in the hope that ...
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1answer
2k 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 ...
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1answer
3k views

Should I remove vinyl flooring to allow the floor underneath to dry out?

We are renovating a 200+ year old house that had a dirt basement. We poured a concrete floor and put vinyl flooring (snap-together, looks sort of like wood) over this. The basement has gotten wet (...
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3answers
8k views

How do I prevent water from leaking into my basement?

How do I prevent rain water from leaking directly into the basement? As you can see in the diagram below, rain water drains into small concrete cracks (near the bright red line shown below) and finds ...
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1answer
648 views

Do I need to get an engineer for badly poured conctrete basement floor?

I am having a new home built on Cape Cod. The day they poured the concrete floor a storm was predicted and it rained and snowed that night. The floors are a mess, pitted, uneven etc. The builder ...
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5answers
27k 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 ...
3
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1answer
236 views

What to do about subfloor covering sole plates?

My basement already has framing and insulation around the outside walls, along with a few outlets in them. If I were to do 3/4" OSB over 1" XPS for a subfloor the sole plates of those outer walls ...
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5answers
14k views

How should I encapsulate a basement wall with chipping paint on a porous surface?

I have a basement wall with several layers of chipping paint. I can't say officially, but I'm pretty certain the bottom layer (dark green in the photos) is lead-based, while the upper layers are not. ...
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4answers
4k views

How can I improve the cold floor in my ground-floor unit?

My home is a ground-floor unit in a condominium. The floor is really quite cold and I'd like to do something about that. I saw in another question the suggestion to use Platon. Would I be able to put ...
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1answer
73 views

Framing a non-load bearing basement wall - are plates required to be a single piece?

Are either top or bottom plates required to be 1 continuous piece of lumber? If it's not required, what is the best way to attach the separate sections; a lapping piece over the top of the joint?
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1answer
992 views

Is This Basement Window Frame Structural

I'm renovating a bedroom in the basement, and I am trying to upgrade the window to meet the local egress requirements (Ontario, Canada). We have a standard bungalow with cinder block walls, built in ...