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Questions tagged [concrete]

Concrete is composed of cement, aggregate (including crushed rock and sand) and water. In homes, it's frequently seen in the foundation, driveway, sidewalk, patio, and stone walls. Note that bricks use mortar in the joints, not concrete.

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Garage dry wall to floor question

Garage wall to floor Hi experts - I’m early stages of modernizing older drywall in the garage and there’s some bare spots about 6-8 inches from the ground where cinder block meets cement. What is the ...
Jamie's user avatar
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How to restore my tile pavement?

In my backyard there's a tile-paved area and there's a line where it goes from one level to another level: https://imgur.com/a/ZYN5Xfy The problem is, a lot of tiles on that edge are not held in place ...
nightcoder's user avatar
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Outdoor-rated fastener for concrete epoxy anchor

In order to mount some brackets to hold unistruts channels I need to insert some fasteners into a concrete slab I poured a couple of years ago (outdoors, exposed to rain etc). I would like to drill ...
Alessio Sangalli's user avatar
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Don't know who to contact about small but complicated animal intrusion/crumbling

Don't know who to contact about small but complicated animal intrusion/crumbling. On the outside corner of my house next to the garage door, there is a side door. Around the base of the side door and ...
Freeboot's user avatar
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Looking for some tips on fixing a railing

Looking for some tips to fix this railing. It's pulled up from the concrete here I'm thinking about cutting those pins or screws then either pulling them up with some pliers or using a hammer drill to ...
BioGuy's user avatar
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Connecting two Aluminium post together

I have aluminum fencing post of 7 ft. Because of less height, I cant use this to insert directly into the concrete to have additional stability and strength. One option is directly installed on a ...
Bret's user avatar
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Raising Concrete Floor 1 Inch for Tile

Looking to tile a basement landing as a transition from the stairs to the main room. The main room is done with DMX 1-step, 5/8 OSB and laminate flooring, so there is about 1.5" between the top ...
Tony Gweesip's user avatar
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Toilet flange 2.5” above concrete basement floor - raise floor?

My basement shop toilet was installed years ago (30+?) on a raised wooden platform that rotted out. I removed the toilet, the rusted out metal flange and the moldy, wood platform (2x2 fastened to ...
Ekimnanrek's user avatar
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DIY Basement walkout [closed]

I'm wanting to do a basement walkout for our rambler (Orem, Utah). Here's the steps I have so far: Move service panel to the left of the photo Use concrete saw to cut out line 58" from back of ...
Jacksonkr's user avatar
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What is the correct spacing for support posts when building cottage?

We are planning on building 20x24 or 24x32 vacation house. Its located in Ottawa region on Canadian shield (from what everyone is telling me). But it is very rocky there. Impossible to dig more than a ...
Michael O's user avatar
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Footers for outdoor kitchen counters? Rocky Mountains

I am interested in building an 8x8 L-shaped outdoor kitchen in the foothills of the rockies (7800'). It will also have 3 - 4x4 uprights to support a roof (There will be a 4th post as well) The soil ...
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Rotted Rim Joist/Sill Plate Behind Concrete Patio

hoping for some guidance on a rotted rim joist/sill plate found in the crawlspace. The rim joist in question runs along the front of the house and is parallel to the other joists. I believe the front ...
gocteam8's user avatar
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How can I remove a post snapped below concrete? [duplicate]

I want to remove residual 4x4 wood post from concrete base, but the remaining wood is solidly lodged in. The post snapped just below the surface and I got most of it out. Any tips to break up and ...
Frenzel's user avatar
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1 answer
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How to repair these concrete steps?

How would I go about repairing this gap in my front porch steps? Link: front steps They are about 20 years old. All the houses on my street have the same steps and I can see the same issue appearing ...
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How do I stop the paint bubbling off and concrete cap?

I have a concrete cap that was painted by the house developer. Water falls from the deck above on to it so the paint has chipped off. The developer has sanded and re-painted the concrete cap using ...
Edward Stead's user avatar
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Is exposed rebar in foundation a problem?

Rebar sticks out of the foundation of my house between my garage and driveway (in the gap between the two concrete pours). It is exposed, and in many places the foundation around it is cracking. Is ...
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Okay to drill into concrete ceiling with cracks?

I am not too handy. I have a shed-like room in my house that is basically bare cinderblocks I want to use as a workshop/garden tools etc. There is one electrical outlet. I want to hang a work light in ...
garlicoinluvr's user avatar
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Do I need concrete footings for a wooden retaining wall?

I'm planning to build a short (16") wooden retaining wall in my back yard. The general idea is to sink 4x4s into the ground every 32" and then attach 2x8s behind them so the back fill helps ...
Jordan Kizer's user avatar
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How can I route groundwater coming through a slab to the sump pail?

I live in the area with substantial volumes of groundwater, so last summer I installed a sump pump in my garage, right in the corner of the garage. See illustration. Red circle is a sump pit, black ...
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How to seal window frame and repair surrounding concrete?

I just moved in to an apartment, and it's great apart from a few things that need repair. In the pictures linked below, how would I go about repairing or filling in the gaps in the concrete at the ...
Karl Coogan's user avatar
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Layed self-leveling compound in upstairs subfloor but subfloor started squeaking

I hired a contractor to lay new engineered wood floors in my 45 year old townhouse because there were initially a lot of squeaks in the old flooring. Once they ripped up the old floors, I made sure to ...
Jason's user avatar
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4 votes
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How do you balance and transport a container of concrete on a ridged roof?

I need to point the ridge of my roof which is at around a 30-40 degree angle. I've done some quick patches before but trying to juggle a small amount of concrete in a bucket with a rope attached while ...
NoviceRoofer's user avatar
3 votes
2 answers
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How to demolish and remove a small concrete pad?

I have a ~5x5ft concrete pad under my deck. There was a hot tub before we moved in but the hot tub was removed and the deck built over it. The concrete pad goes all the way to the exterior wall/...
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Small wall of enclosed porch doesn't seem to be attached to concrete floor anymore, is there something I can reinforce the wall to the floor?

I have an enclosed porch. the small wall that the storm door is attached to doesn't appear to be anchored to the concrete floor anymore, if it was at all. Is there anything I can do to re-anchor it ...
s. mCk.'s user avatar
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What is covering my stone wall and how to repair?

In the photos you can see some kind of concrete rendering or something covering the top of my doorway, and also a layer peeling off the side of a window. Does anyone know what this most likely is? Is ...
SingularityFuture's user avatar
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Foundation repair at garage wall

Above grade section of concrete is damaged where the brickwork of the house meets the garage. The house has a basement though it does not extend beneath the garage. Previous owners appear to have ...
ishouldbepainting's user avatar
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Why are there square holes in the stem wall on either side of my sliding door? I'd like to seal them to prevent pests inside my house

We just bought this house in January, and while touring we noticed a small square hole on each side of the basement sliding door. I figured I'd come back and seal it up at some point. Well, we just ...
bluehomefellow9's user avatar
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How can I cover my basement floor & waterproof it? [closed]

I have about 420 SF of basement flooring I need to do something with. Backstory: We bought our home in 2019 and very shortly thereafter found out our basement gets water. Our house is a tri-level, so ...
Lisa Noyes's user avatar
3 votes
1 answer
299 views

Vapor barrier (sheet) over concrete pad below ground level deck?

I've just finished the framing for a low deck that's partially over a concrete slab (see pics below). As you can see, there is minimal clearance under the deck for air circulation. I'm now thinking I ...
Texaus_76's user avatar
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bathroom concrete floor patch type?

This old floor has some spalling but main concern is an area that looks like someone started jack hammering for about 3 feet long, 4 inches wide, uneven depth (max depth around 2"). Looking for ...
afm's user avatar
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How to best fix a crack in concrete balcony corner?

So I was recently pondering a problem with a crack in a corner of a balcony made of concrete as shown below in the picture. I am not a builder (rather an amateur handyman) but would like to educate ...
davos's user avatar
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Pressure-treated wood truly necessary for basement furring strips?

Best practice described everywhere is to use pressure-treated wood when the wood will be in contact with concrete. In general, that makes great sense, especially when framing to finish a basement with ...
Indigenuity's user avatar
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pouring concrete platform on existing concrete foundation

In preparation for installing a heat pump, we need to expand the existing platform on which the current heating unit sits by at least 6 cm. The room itself is long-ish and narrow. Our washer and dryer ...
Suzanne Osterburg's user avatar
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Is it normal for ground to settle like this, and how can fix it?

Before we bought this house, they repaired/replaced the sewer line out front. Refilling the dirt and replacing part of the sidewalk. They didn't really leave a mound of dirt, but I also don't know how ...
Justin Jasper's user avatar
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Concrete base for summer house

I need to make a concrete base for a summer house/office. How much sand and cement will I need for 3.5m x 3.5m area to a depth of 10cms?
Lyn's user avatar
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How can I prevent basement slab moisture from causing mold in flooring?

I live in a residential community built in the late 80s. I believe no vapor barrier was put under the concrete because when we switched from carpet to wood floors mold starting coming through after a ...
Julie's user avatar
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Will a second layer of landscape fabric impede water drainage?

We bought a small wooden sandbox. It has no bottom and the entire thing sits on landscape liner. My questions is: 1. Should I buy another layer of landscape fabric and staple it to the inside of the ...
Cass's user avatar
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6 votes
3 answers
1k views

How to install a curtain rod with a perpendicular wall on one side

I have an extremely awkward window configuration that I have no idea how to handle. It seems like most curtain rods want to have a bit of space on both ends of the window to install flat onto the wall ...
frickmywalls's user avatar
1 vote
1 answer
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Concrete self leveling problems

So.. I have made a big mistake. 2 years ago we put down lvp and we did not ensure the concrete slab was flat. Over the past 2 years the floors in my kitchen and dining room have cracked and split. So ...
Terry Wonycott's user avatar
2 votes
1 answer
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What weights of the components of concrete do I need for my project?

We need to mix 0.73 cubic metres of concrete for our shed slab. We plan to mix C30 concrete as follows: 1 part cement 2 parts sand 3 parts coarse aggregate I have tried to work out the quantity (in ...
Naomi's user avatar
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Basement tie rods leaking after repair

I'm preparing the basement concrete walls before finishing the basement. I will be gluing XPS insulation and building a drywall wall without added vapor barrier. The previous owners appear to have had ...
JRandomHacker's user avatar
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1 answer
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How to best seal a concrete hole patch in basement slab?

I’ve got multiple large trenches busted up in my 1911 basement floor where new drains were put in. It’s time to fill them back in with concrete but I’m concerned about water coming up through the seam ...
Jeremy P. Beasley's user avatar
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2 answers
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How can I replace a washed out foundation for a sidewalk?

The city recently replaced the sidewalk in the picture shown. A few days later we had a heavy rain that flooded the street and washed out the gravel from under the sections shown in the picture below....
P Schmurr's user avatar
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What is this concrete compartment outside my foundation?

I’m planning to run some PVC conduit through foundation wall (LB body above grade and then down to 12-18” below grade) and some PVC water pipe through foundation wall (below grade). However, there’s a ...
John DiBaggio's user avatar
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Insect hole in concrete floor

2 months after it's clear top coat application, these holes appeared with something cotton on the surface. It's very hard to pull it out. And there's like a something black that comes out of the hole ...
user185559's user avatar
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3 answers
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Cleaning black mold off a concrete floor - good advice or bunk?

I was about to spray some bleach/water on my concrete floor, then scrub it with a nylon brush. Then I saw this article. Is this person correct that bleach won't actually penetrate far enough to kill ...
orchest's user avatar
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How to secure a post for a garden standpipe -- concrete around pipes?

We're replacing our 70 year old garden standpipe/water column with a new one, which needs to be bolted into concrete. Any suggestions on how to do this without surrounding the new PVC connectors with ...
Julianne's user avatar
8 votes
1 answer
1k views

How to address crumbling garage floor?

I bought this house about a year ago and noticed these boards on the garage floor covering an area where the concrete is crumbled, it's in the corner of the garage. Based on the condition of the ...
Brandon Tlachac's user avatar
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Concrete Steps with Top Wooden Riser

I recently purchased a home and am working through some deferred maintenance issues. One issue is the front steps. There is a set of concrete stairs leading to a concrete landing and the issue is the ...
Peter A's user avatar
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Need advice on underlayment for finished / converted garage floor

We recently bought a split level ranch in New England that we are renovating to make safe for our family. The previous owner had vinyl tiles in a converted garage, that is about halfway under grade ...
notaslav's user avatar

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