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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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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How to make 3“ concrete ”legs" via reusable casting structure?

I have a design for a (set of) planter(s) I'm trying to make, and to make the design I have in mind, I need an 18" long 3" OD leg with a bit of rebar in them. (let's say 100 of these bad boys in ...
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699 views

Is it ok to use pneumatic tools underwater

I have a concrete that is stuck underwater. The concrete piece is too heavy. I think that I could break it into small pieces with my pneumatic impact drill.
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Should I pour a footing and pier at the same time?

I am pouring concrete for deck footings. I need an 18in diameter footing to carry the weight, and I will also use a 8 in diameter pier to bring it to an inch above ground. The footing must be 30 in ...
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How should I build an exterior door landing pad?

I've got a building with several exterior doors (all opening inward). The slab and walk-up is about 18+" from the ground. Code requires that I have a 36"x36" landing pad outside each exterior door. ...
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1k views

How to patch concrete as invisibly as possibe?

I had a plumbing repair done this week that required them to jackhammer a small hole through a concrete porch in front of my house. It is small enough that I’ll probably attempt the patch myself, but ...
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461 views

How can I thicken Acid Stain myself?

I have been doing a lot of decorative concrete around my house, and I have yet to find a masking tape or caulking or anything that can hold the acid stain where I want it. I finally found something ...
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Should I use a 6 mil poly moisture barrier for engineered hardwood floor installed over concrete slab-on-grade?

I am planning to install an engineered hardwood floor over a slab-on-grade subfloor. The slab is bone dry but I understand it's wise to install a moisture barrier anyway. My plan right now is to ...
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How can I install T molding on concrete subflooring?

I'm at the point where I want to install some T molding for the transition from our main room to the bedrooms. I just took a look at the directions and they only show screwing the track into the ...
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What is the maintenance schedule for a concrete driveway?

I have a concrete driveway that I'd like to keep looking good, and in good working order. What needs to be done to maintain the driveway, and how often should it be done?
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338 views

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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427 views

How to prepare poured concrete wall for adhesion

I am considering the application of an artificial stone wall veneer onto a poured concrete wall. The wall is flat with no protrusions or other which might aid in adhesion. I do not know if any release ...
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How can I repair deteriorating concrete walls?

Our garage is about 80 years old and made of steel-reinforced concrete. The inspector deemed it structurally sound, but cosmetically the interior is a mess. The concrete has come loose (it is old ...
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1answer
3k views

What are my options for resurfacing or repainting my old concrete steps?

My front steps are very old. The paint was chipping off so I used a chemical paint stripper to remove it. I also used a pressure washer to get the rest of it off. I would like to stain the steps ...
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1answer
2k views

methods of detecting a copper pipe in concrete floor

We believe that our copper water line is embedded in the concrete (and rebar) basement floor. We would like to excavate a hole to install a sump pump. We don't want to hit the copper line which we ...
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115 views

What's the proper way to address a moisture issue in a concrete slab?

About 4 years ago my wife & I purchased a home. It was approximately 10 years old at that time. The foundation is a concrete slab. Approximately 2-3 years before we purchased the house, the ...
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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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215 views

How do I prepare a hole for concrete?

I removed a chimney from my house earlier this year. After everything was cleaned up, I was left with this big hole: I have two questions: (1) How do I know what type of concrete to use? (2) How do ...
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1answer
619 views

How do I repair a concrete driveway that has been damaged by salt?

When we moved into our house the driveway was pitted due to salt use. We would like to repair this, but we are looking to know what the best method would be. Can a new layer of concrete be added over ...
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1answer
772 views

How do I create concrete or fiberglass outdoor seating that will last?

My husband and I have a design for outdoor seating we would like to create that is organic (curvy) in shape and surfaced in mosaic designs. Think of a dragon undulating in and out of the water, the ...
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1answer
5k views

How do I create a curved surface drain out of concrete?

I have a barn and a pump house (10x16) structure that are within 3 feet of each other, built in 1910. The barn's foundation is field-stone, mostly exposed on the side of the pump-house. There is a ...
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1answer
474 views

How hard is stamping concrete?

I want to put a 2' border around my driveway of colored and stamped concrete. I have gotten bids that almost $3,000. I have called the concrete company and asked how much 5 yards of colored concrete ...
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205 views

What are the dimensions of the steel in the concrete slabs on the upper floors of my house?

Drilling holes (for curtains) in the ceiling of the 1st floor(2nd floor in the US) of my house I ran into a steel rod in the middle, running parallel to the outer wall. The steel is about 2.5cm in ...
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417 views

How do I form and pour long concrete steps for an exterior staircase?

I want to replace some concrete blocks with proper stairs in front of my house. They are wobbly and dangerous. Attached is a photo of what is currently there. I have been unable to find anything ...
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291 views

What should I do about a horizontal crack around my porch slab?

This crack runs all the way around my porch slab but doesn't go into the foundation where the basement starts. The ranch house was built in 1956. The porch was framed in and our office is in there ...
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How can I repair my concrete porch?

I have a concrete porch upfront which has 2 pillars supporting a roof. The concrete is showing cracks and spalling. To repair can I resurface this? A friend suggested tigercrete (concrete with ...
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2answers
1k views

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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1answer
448 views

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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273 views

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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275 views

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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444 views

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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What is the best way to remove and prevent leaf stains on concrete pavers?

We have a brand new paver stone walkway/patio. To my dismay, I noticed that their were leaf and acorn stains from the oak tree in the front yard. I've learned my lesson and I'm going to try to keep ...
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Extending concrete Slab

I have a 10 x 10 slab (4 inches thick) that is already in my back yard in the corner. I bought a kit to build a 10 x 10 shed on it, and then realized that would put it right up to my fence. So my ...
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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 Insulate a concrete slab foundation in an older house?

What are some ways to insulate a concrete slab type foundation in an older home built in the 50's? The slab as far as I can tell is not insulated at all and results in a very cold floor and living ...
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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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2answers
884 views

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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2answers
795 views

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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1answer
148 views

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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4answers
6k views

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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3answers
619 views

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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2answers
15k views

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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1answer
515 views

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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2answers
272 views

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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2answers
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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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4answers
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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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420 views

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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994 views

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 ...