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 to build up concrete slurry under a new bath

I'm replacing our bath. It is a standard built-in plastic bathtub, with a concrete slurry built up underneath it. I talked to a builder some time ago who explained that it was to support the weight of ...
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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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What can I do about a house with internal concrete floor with no DPM?

My partner and I have just bought our first home.A 1950's bungalow which is need of refurbishment. So far it has thrown us a ton of surprises! The worst so far being the floor in one of the bedrooms. ...
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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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Hand tool for packing dirt

What is a good simple hand tool for packing small surfaces of dirt to prepare it for laying concrete? I've seen big pneumatic hammers at large construction sites and was wondering if there is a good ...
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How to get water to hop from patio over brick wall?

I have a concrete patio elevated a few feet above the lawn. The patio is bordered by a brick wall (on 3 sides, with the house on the 4th) that extends higher than the top of the concrete of the patio ...
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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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Is it wise to cut a long trench in concrete slab foundation?

I've got a two-car garage (4-inch concrete slab on grade) that I'm turning into living space. I want to put a bathroom out there but I need to get plumbing through the floor. I didn't think it was ...
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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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How to repair cracks in concrete overhang over entrance

I have a slab of concrete over the front entrance of my house with some serious cracks in it. I don't actually know what the proper name for it is, which makes this difficult to Google - so I've ...
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Need to move concrete slabs to backyard

I am building a pizza oven for the backyard and part of the build instructions said to build three concrete slabs (2 that are 47" x 20" x 5.5" and another that is 47" x 29.5" x 5.5"). It asks you to ...
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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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Repair Hole in Concrete Foundation

The previous owner of my house had a sprinkler system installed and had it run off the main water supply in the house instead of a separate meter. I had a new meter installed, so I do not have to pay ...
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What is this crystal on my concrete?

My concrete has an old unknown spill which appears in the newly warm moist weather to be forming crystals or hairs. It doesn't have direct water on it, and hasn't been damp recently. What is the ...
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How can I stop water from coming in through a crack near the top of my bulkhead wall?

I have a bulkhead entrance to my basement. The bulkhead walls are mostly fine, with the exception being near the top. The top 6 or 8 inches or so of the walls are constructed of what appear to be ...
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How can I remove water-based emulsion paint from paving slabs?

On painting the bedrooms in our new house, we've gotten some (mainly) water-based paint on some of the paving slabs on the patio. A little of it may be oil-based gloss we used for skirting boards, but ...
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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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Is it possible to paint concrete pavers

I have a large paved area that I would like to replace with lawn. My plan is to use some of the pavers as a border. They're plain concrete pavers (450x450mm) that look like this except about 20 years ...
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What type of concrete sealer to use to prevent frost heaves in my driveway?

I am about to put concrete sealer on a driveway and inside a garage. What sealer should I apply, if I am specifically interested in preventing water from getting in cracks and causing frost heaves ...
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Are hairline cracks in basement concrete floor a problem - no water coming in

I notice quite a few hairline crack in my basement concrete floor. I've lived here for 14 years and no water has come up through the cracks. The townhouse was built in 1999 (so it is not a new pour). ...
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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 to increase height of existing concrete slab?

An existing patio has flag stones set over a concrete slab. If you were to remove the flag stones and thinset, what would be the best way to raise the level of the existing slab to make up for the ...
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Is this normal for the brick to extend past the concrete slab foundation?

I am in the process of buying a home and noticed that the brick extends past the concrete slab foundation. I checked different houses around the area and all were flush with the concrete slab. Is this ...
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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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What tools and techniques are required for moving & re-sloping a cement slab walkway?

My next "shape up" project for my house is moving and re-sloping the concrete slab walkway that goes around my house. I am wondering what tools would be handy for this job. I'll need to get a pry ...
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Can I rescue leaning concrete forms?

I'm adding to my deck. I marked off 6 holes, and dug them about 30" deep. Then I set tubes in, letting them extend about 8" above ground. I put a couple inches of rock in the bottom. I made sure the ...
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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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How can I find places to nail/screw into walls of ICF (insulated concrete form) home?

The home I bought has exterior walls made of ICF (insulated concrete form). I don't know the brand or type, I just know that somehow the builders attached the drywall to the styrofoam/concrete. I'm ...
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Will a few weeks of exposure to the weather damage cementboard?

I am getting ready to put Durock on my outdoor grill area. I am wrapping it with stone but it will be a few weeks before the stone comes in. Will the rain damage the cement board in any way or should ...
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What are the specifics I should be looking for in a quote to replace my concrete steps?

The front steps in front of my house are deteriorating. I am trying to get a contractor to replace the limestone slab steps with concrete. For example, enclosed is a picture of my estimate from 2016. ...
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Good, affordable pathway materials for sidewalk with tree root problems

I recently moved into my first home. Unfortunately, the concrete slab pathway leading from the town sidewalk to the front door is buckling from the roots of an enormous pine tree that grows near it. ...
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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 ...
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How should I anchor a hand railing to sandstone steps?

I've got three exterior steps made of natural sandstone. They are 6 ft wide, and 10" thick. I need to anchor a metal handrailing to them. The railing has two feet: 1/4" metal plates with 3/8" holes ...
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What cement product should I use to fix a hole in my slab?

I was removing old thinset and self-leveling cement in an area in preparation to tile it when the 6" chisel and demo hammer I was using sunk in to a specific spot. I found that this specific spot had ...
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How can I remove ridges from a concrete shower pan?

I recently laid a new concrete shower pan, and went around the drain radially, which created some circular ridges. I'd like to make the pan as smooth as possible, but these ridges are currently 1/8" ...
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How can I level concrete pavement for an above-ground pool?

I want to set up an above-ground pool (14' round) on my back yard. There is a relatively good place for it, where there are concrete slabs, however, there are two problems: The slabs are not level. ...
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What is the best way to remove pet odor from concrete?

The concrete floor in my garage had been home to a large dog for several years. There is a visible stain and strong smell in one area of the garage floor. The concrete does not appear to be sealed ...
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Heat causing concrete to heave

I mostly hear about this happening for roads on very hot days, but I'm wondering what about the heat causes the concrete to heave? Is there any concerns for foundations/garage floors/drive way heaving ...
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leveling concrete floor

I have to level a concrete floor that is more than 2 inches out of level. Should I be using self leveler, or concrete? Is 2" too much for self leveler?
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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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Can I lay pavers over a concrete patio?

I have a concrete patio in my backyard that's in pretty good condition. We don't like how it looks, so we'd like to cover it up with brick or pavers. Looking online, it appears that most people ...
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Should concrete stair landing be anchored to building?

I have a small, approximately 3x3' concrete landing in front of my basement door, from which stairs go up to the street level. I need to redo it and was wondering whether to tie the rebar from under ...
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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 ...
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Can I use self-leveling concrete on a very not-level surface?

My garage floor is probably 50 years old and is severely pitted, and decidedly not level. I don't mind it being un-level, but it's so not smooth that sweeping is much harder than it should be. Can I ...
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How to repair / reinforce deteriorated footings and subsoil below brick & concrete porch

My fiancee and I recently moved into a 1922 brick craftsman-style home. The front porch has a ~4" poured concrete floor and large solid concrete railing caps (12"W x 4"D). Brick columns support the ...
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What is the laziest way I can build a non-structural, non-aesthetic cinder block wall to contain compost?

I have a ton of brush that I used to burn, but I recently bought a chipper/shredder and want a spot to compost it along with grass clippings and greens. I also have 3 tons of CMUs that are just ...
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How long can a concrete pool stay without the water?

After draining the pool, how long can it stay empty. In other words, how much time do I have to work on it, before it is not safe? I heard opinions that concrete pools can't stay long without the ...
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Renovating Crawlspace with Poured Concrete Floor

My newly-purchased 1950s home has a below-grade crawlspace with a poorly-poured concrete floor. Specifically, it is very coarse and looks like it was poured and spread with a garden rake. In some ...
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Easy way to remove tile concrete from bathroom wall?

Are there an easy to to remove tile concrete from the wall? Are there e.g. some way to get it off in whole pieces so cleaning up afterwards will be easier? Here is a picture of the wall in question. ...
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How can I get windshield wiper fluid stains out of my garage floor?

My car's windshield wiper fluid reservoir had a leak and quite a bit of it soaked into my garage floor (which is a light concrete). It happened over night, so it soaked quite a bit. Now the floor is ...