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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How do I make a fake rock finish for a water feature?

I would like to create basin for a water feature. It would look really cool if it can have a fake rock finish. How would I go about creating it? What material would be recommended, I have seen a ...
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When would I use epoxy anchors?

Epoxy anchor is essentially a metal alloy rod set onto epoxy. A hole is drilled and cleaned, then epoxy is put into the hole and the rod is inserted into the hole and left until epoxy sets. Using ...
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Can I use the crushed remains of an old concrete slab as a base for a new slab?

I have recently broke up my old concrete shed base which was 100mm thick, I also have quite a lot of gravel. The broke up shed base is quite large chunks of concrete so could I use that a long with ...
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Can I pour concrete if it's raining out?

I have 6 bags of concrete that I need to mix and pour for 2 deck piers. It's raining lightly outside. Should I reschedule or just do it and cover with plastic when we're done?
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How to fix a through hole in a concrete step?

Here're two photos of a through hole in a step in an enforced concrete staircase in an apartment building. The step is about one inch thick, the hole is about three inches wide and appeared many years ...
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How to level a section of raised concrete floor?

I had a plumber move a toilet drain on cement slab. The new concrete he poured is about 1/8" higher than the rest of the floor. I need the floor to be level for tile installation. The new concrete is ...
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What is “mud-jacked”, and why is it not done in the UK?

I have seen of few questions/answers about "mud-jacked", but I have never come across it in the uk.
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What are my options for tiling over an uneven concrete floor?

UPDATE: After doing my research, it seems like I will need to level the floor before tiling. My carpenter doesn't know how to it so I will have to get a contractor to do this job. How much would it ...
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Can PVC be encased horizontally in concrete

Have an unfortunate "this is the only way this is going to work" situation with a DMV repair, resulting in the repair portion of the drain pipe, having to run 4 feet horizontally (yes, at the correct ...
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Is it okay to build a fire pit with concrete?

I want to put a small fire pit (3ft x 3ft) into backyard. I checked the stone options at home depot & lowes and just the material will cost around $250. I was thinking about building a mold and ...
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How can I clean a very dirty concrete basement floor?

My basement floor has been made amazingly gross (thank you, cats) and I'd like to get it really clean. Is there an option other than scrubbing on hands and knees? Are there cleaning solutions that ...
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2x4’s embeded in the foundation wall

A home is going up right next door, and I noticed that the foundation walls have 2x4’s embedded in them. Won’t that cause the concrete to crack when the wood gets wet?
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How do I dig out a hole for fence posts in a concrete patio?

I'm installing a short fence to run from the side of my house to the external garage. It will run along a seam where my asphalt driveway meets my concrete patio. I'm fairly certain that the footers ...
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Will this floor tile break?

So, I've got some 12"x12"x1/4" tile laid over a concrete floor. I'm cleaning up between the tiles getting ready to grout and I notice I can see some concrete between and underneath (the small amount i ...
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gravel under concrete slab? is it absolutely required?

so, I have a post-frame shed, 12x16. there are posts at 6' on the short sides and every 4' on the long side. posts are set ~18" below grade, on a 2" cap of cement over a few inches of well compacted ...
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How to fake this concrete effect with paint?

I'm attempting to imitate this concrete wall (at least I think it's real concrete!), using acrylic paint. For my initial attempt I was thinking of working with two grays (one slightly lighter) - ...
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how to repair large, uneven crack in concrete floor

I have a really long (about 20') uneven crack in my cement garage floor. Not only is it jagged, but the sides of the crack range from flat to about 1/2" high. I want to level the sides of the crack, ...
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How do I repair the bottom lip of a concrete slab?

(My issue is kind of like this question but more of a missing chunk than a thin crack.) I have a concrete patio in the front of my house that was fixed by a previous owner after a bottom chunk broke ...
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Pouring Curbing On Existing Concrete

I recently removed the crumbling concrete curbing from around my front porch flower bed. This weekend I plan to create the form and pour a new curb for the bed. My question is: When I build the mold, ...
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How can I remove a Carpet from concrete stuck down with black mastic/bitumen

I'm currently on restoring a property in the UK. The house was originally a Care Home built in 1987, and was built using standard commercial techniques at the time. The issue I'm having is, at the ...
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What do I level a 2" slope in my concrete basement floor?

I want to finish a 12'x36' part of my basement. The trouble I am having is that it is sloped to a floor drain. I was told that DRIcore and shims would work but the drain is a 2" slope down from the ...
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How do I properly renovate the concrete floor of my balcony?

I live in an apartment that can be characterized as an old soviet-era, 5-story, multi-apartment, concrete block-based building. That means, everything was built by "stroybat" a soviet-time army ...
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New Concrete Patio Options

We would like to put in a new concrete patio. We are looking at a stamped concrete patio for durability and visual appeal. What other options are there? What are the pros and cons of the different ...
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How can I stop a porch crack from causing internal cracking?

My front porch slab has cracked and part is at least an inch lower. It is supporting the roof. Now there is a crack going up the inside of my drywall at the same place. Suggestions on how to solve ...
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Are there any advantages to using higher priced sealers?

I want to use a water based sealer on my pavers to bring out the color and also for some resistance against dirt and fading. I went to the store and saw sealers varying in price from about $11 per ...
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Should I use concrete, or some other method to fix this entry area?

I have an entry walkway that's 9ft x 4ft by my front door that I need to fix so it is solid ground. I was thinking of putting concrete down and then laying tile on top of the concrete. I have some ...
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How to lift/raise/repair a segment of concrete slab?

I have an 8-year old concrete slab around my pool. One slab has sunk by about 2 inches on the short side. The slab measures about 6 feet by 3 feet by 4 inches. It rests against the pool structure on ...
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How to safely chip away at a tile to make room

I need to install a shower against a tiled wall. I have 2 issues : I need to safely remove a tiny bit of the tile, to give me more access to the water outlet of the pipe. What tool and method should ...
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How can I hang a framed picture onto a wallpapered concrete wall without damaging the wall surface?

I have a framed picture about two feet by three feet in size that weighs about one pound (not a sheet of paper). I want to hang it onto a wall that is of full-blown hard concrete and covered with ...
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Ideas on how to fix a void at the bottom edge of my concrete steps?

I was recently pulling weeds and I noticed that there is a hole at the bottom of my concrete stoop. I'm not quite sure on how to address it. I'm pretty handy so I'm sure that this can be tackled ...
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How to hang a baby cradle from a concrete ceiling?

I am considering buying a baby cradle that will hang from the ceiling. We have a concrete ceiling in the apartment and I am not sure that it will be possible to install it safely. It needs to be able ...
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Removing blacktop/asphalt pad

I have what used to be a basketball court in my backyard. Its roughly 20x20 feet. I've already removed and sold the basketball hoop. On the end where the hoop was theres concrete piling sunk below the ...
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Will I trap moisture in the concrete of basement walls and floors if I seal them with epoxy?

I'm thinking about painting my basement's walls with some concrete sealer (before finishing the basement) and floor with epoxy paint. Many people are doing that, but I'm concerned about moisture in ...
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How many concrete piers do I need to support a 10 x 10 wooden floor supporting a 1600 lb shed?

Aptos, CA, United States. As you've probably noticed from my prior post, I'm in the process of building a foundation for a garden shed. My specific county/region does not have strict restrictions/...
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How can I prevent cracking in concrete (or earthen) walls from the freeze/thaw cycle?

I'm interested in building a garden wall from either concrete or rammed earth, or a mixture of the two, but I'm concerned about Michigan winters and the havoc they wreak on everything solid. It seems ...
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Can I use landscaping lava rock as a concrete slab base?

The side of our house if continually overrun with weeds. I'm thinking of fencing it in and laying some concrete to prevent the weeds and provide some storage area. Currently there is red lava rock ...
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Do I need to install dry wall in my basement?

I have a concrete basement with concrete walls. I'm thinking about just painting the basement and not have to put up dry wall because I want to save money. Is that a good idea or should I really ...
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Weird orange rust spots appearing in holes on freshly painted basement cinder blocks

I've started to paint my basement with white primer, and on one wall weird orange spots appeared in the holes I had "filled" with the primer. The wall is made of dark cinder blocks which are pretty ...
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How should I remove a raised concrete pad on my basement floor?

I have a raised square of concrete, about 42" by 42" by 6" in my basement. Its probably an "equipment pad" of some sort, not sure what it was originally for, but it is inconveniently placed. Its ...
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Will I cause problem/cracks with jumping exercise in upper floor?

Every day I am doing my martial art practice in upper floor. It contains jumping and power movements which cause sounds downstairs. Is there any problem for concrete by this continuous jerking ...
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Patching a cracked concrete/brick walkway

A smallish part of the concrete/brick walkway leading up to my front door has broken off. The cracked piece is about six inches long by two inches wide. How do I go about repairing this? Is this ...
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Building a raised wall for a pond

We are looking to build a small pond (9'x18'x6'), but we want the edge to be raised up about 8". I am thinking about using CMUs (Concrete Masonry Units) which are 8x8x16. The entire pond will be lined ...
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What are some tips for installing a small shed?

I want to put in a small shed to store my push lawn mower and perhaps a few other things. Our village's website states we need a permit: SHEDS – Must be either anchored to a concrete slab or have ...
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Screw doesn't grip

I have just purchased 3/16 x 2-3/4" philips head tapcons and the recommended 5/32" drill bit. I drilled the holes using hammer-drill with ease and plenty deep as recommended. Attempting to drive the ...
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Adding rebar to deck footings and piers?

I've heard a few people mention adding rebar to deck footings and piers to make them stronger, but I haven't been able to find any details on how exactly to do this. Is it sufficient to just hammer ...
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Do I use dirt or gravel to fill around a cement form for a fence post?

Background: I know you're not supposed to dig a really wide hole for a fence post hole. But the previous owner of my home did not know that. He or she dug a really wide hole, filled it with a bunch of ...
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How to reinstall iron stair railing in concrete that rusted out at the base?

So one day some time ago our iron stair railing going from the sidewalk to the stoop rusted through at the base of the posts and fell right over. I had a welder friend cut off the rusted portion and ...
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Technique to level a patio for concrete and tiling

I currently have a large patio which has brick paving. unfortunately the paving has started to sink in spots and gathers rain water. I will be removing the brick and laying a slab of concrete, in ...
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Howto convert old basement slab into finished concrete floor?

Doing a complete remodel, after Boulder flooding, of my basement. After demoing and floodcutting, all that's left is framing and concrete slab. I'd like to turn this into a nice concrete finished ...
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How should I install a hoist given that the walls and ceiling are made of concrete?

I have this hoist, of the engine-lifting variety, which is designed to be installed below a pipe or beam. I do not have any load bearing pipes or beams. What I have are a poured concrete ceiling (9" ...

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