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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Is it possible to patch concrete stairs?

At my church, there is an old set of stairs made of concrete. They've begun to crumble on the top to the point where the treads are no longer flat and smooth. I've not seen any material that has ...
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1answer
364 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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1answer
143 views

How do I fix my crawlspace's mould problem given the floor is an improperly poured slab of concrete?

I have a 50 year old backsplit, with a minor mould problem in the crawlspace. There are a couple of wet spots that can be fixed with simple exterior grade changes, and one spot that will need to be ...
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2answers
5k views

What kind of paint should be used on an outdoor concrete walkway?

I have an outdoor walkway that was freshly painted just before I bought my house two years ago. Two winters have worn down the paint and now it needs another coat or the exposed concrete will crumble. ...
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1answer
436 views

Would building a partial raised wall for a pond in this way be strong enough?

I just read your answers about "Building a raised wall for a pond." Although quite detailed, I am not very physics minded and hope someone will give me a thumbs up or down. I have a pond that is ...
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2answers
3k views

Should I seal, waterproof a concrete basement floor before painting?

What is the best sealer/waterproofer to put on a basement floor that I just want to paint. New construction, no water problems, but washer & drier & water heater are in basement and add to ...
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1answer
404 views

Do I need to do more prep work on this cement floor before putting in new tile?

In my basement i have a poured concrete floor, and we're re-doing the bathroom down there. It used to have Vinyl flooring, and we ripped it all up. The top vinyl part came up easily, but it left a bit ...
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4answers
502 views

Would upgrading my basement with sandstone blocks be worthwhile?

Having a look at an old farmhouse that is for sale in the area, and as with most houses in the area of this age the foundation is built on red sandstone blocks, around five feet deep, with a dirt ...
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1answer
524 views

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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2answers
881 views

How do I handle a transition from concrete to dirt underneath a flagstone patio?

I had a pool installed a few years ago and the builder threw in a narrow concrete patio around it. See fuzzy picture below (sorry about that. Google earth must be a little tipsy tonight). So now ...
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3answers
7k views

What is the best way to fill a hole in a concrete basement floor?

My basement floor has a hole cut where the water line enters the house. This hole is around 2ft square, and digging down a little I hit dirt and small roots. I'd like to seal this hole as I believe it ...
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1answer
325 views

Where can I buy a concrete gate post in the style of this 1930’s gate post?

We are about to get a wall rebuilt and it would be great if we could have gate posts that where in the same style as the rest of the road. As I don't know the same of the style I have nothing to ...
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1answer
2k views

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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2answers
655 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
3k views

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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1answer
234 views

How should I prepare an all-concrete warehouse space before building out?

I haven't put together my complete buildout plan yet, but I expect that most of the preparatory steps are the same regardless of where I'm going with it. The space is approx 100'x100'x16', and ...
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4answers
726 views

How can I attach normal framed walls in between concrete columns?

I'd like to add partitions to this grid of columns. I want to make "normal" walls, framed with 2x4 and faced with plywood or drywall. My concern is how to attach the walls to the columns. Naively, I ...
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1answer
1k views

Drilling holes in concrete

I'm not what you'd call a handy guy, and now wife wants me to put up curtains. This task is reduced primarily to getting a bit of metal stuck to the ceiling. I bought screws and anchors. The anchors ...
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3answers
4k views

Small Concrete Paver patio under BBQ

I have a BBQ that's currently sitting on a not so level grassy area. I'd like to create a very small base for the grill with two 2ft by 2ft concrete pavers so I have a level base, but I don't know how ...
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4answers
4k views

Water coming in through the walls of an old concrete garage

I recent bought a house with a detached garage, made of old concrete (high aggregate content) reinforced with steel rods and set into a hill. Built in 1938 or so; no waterproofing. Now that Boston ...
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2answers
274 views

How to find the concrete beam in a sandy block ceiling?

I want to hang a ceiling fan at my apartment, where the ceiling is made mostly of a sandy material. How do I find the concrete beam going through it, assuming I do not have access to the blueprints of ...
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1answer
533 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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1answer
672 views

Is it OK to pave without mixing?

Going upon the advice of a reputable builder, I used Quikrete fast-drying concrete for a small slab outside my house. Not load bearing. His recommendation was to dry-pour the whole thing. Framed, ...
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1answer
218 views

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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1answer
1k 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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1answer
351 views

How to mitigate and/or repair concrete frets (slab edge wetting)

A building engineer made a report of problems with our property. One issue raised was "slab edge wetting" by which the building engineer meant that the concrete slab on which the house is built is ...
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1answer
387 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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2answers
5k views

What are my refinishing options for a concrete patio?

I have an external concrete patio, about 3 years old. I'm wondering if there are any finishing or refinishing options to make it look a little better than just boring 'ole concrete.
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2answers
3k views

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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2answers
641 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
409 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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2answers
1k views

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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3answers
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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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2answers
382 views

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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2answers
756 views

Best way to tear up half a concrete parking pad?

I have a concrete parking pad in my back yard (butts up to an alley) that is substantially larger than I need, and I'd like to reclaim some of that space for my yard. To that end I'd like to tear up ...
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2answers
534 views

What is an appropriate sealer for a Papercrete bench?

I've built a bench out of tires and papercrete two years ago. i've sealed it with lime plaster. in the past two years it held up against 500 m"m of rain in the winter and Mediterranean sun 7 month ...
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2answers
1k views

Concrete slab at a brick wall

I want to build a concrete slab (upon which a deck will be build later) at the foot of a brick wall (by foot I don't mean the foundation foot, I just mean where the brick meets the grade level). I ...
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2answers
393 views

How do steel and enforced concrete posts compare?

From what I observe in my region posts in both municipal and private construction - mostly fence posts and lighting posts - are gradually replaced from enforced concrete to steel pipes. Is it just my ...
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4answers
2k 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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2answers
563 views

Are there any rules of thumb for whether a concrete pad needs metal re-inforcement and if so, how much?

I may be doing some concrete work soon around the house and I'm somewhat of a novice at it. One thing that I am unsure about is when I need to reinforce the concrete with re-bar or other metal ...
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2answers
231 views

Removing stains from concrete

How can I remove stains from concrete (garage/driveway)? The stains are most likely either oil, gasoline, or transmission fluid.
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3answers
689 views

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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1answer
523 views

Sealing a small crack in poured concrete foundation

I have a small crack in my foundation that started seeping water when there was ice on the ground. The water is flowing along the foundation under my fireplace bump out. The cause of the problem ...
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8answers
1k views

How do I secure a canvas garage?

I picked up one of those cheap canvas garages from Costco, to keep a few things out of the weather. It's 10' wide, 20' long, and maybe 11' high at the peak. Our area is a bit prone to windstorms. I'm ...
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2answers
890 views

How do I install drywall when the door is too close to a concrete wall?

I'm looking for suggestions to finish one of the walls in my basement. I've included the pictures of the wall below. As you can see the doors are right up against the wall on both sides. There's ...
5
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2answers
3k views

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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2answers
524 views

Can old concrete fragments be cleaned and used as crushed stone?

Suppose I need to replace old concrete on a driveway or in any similar scenario. The usual way is to just gather all the old concrete and dispose it to a landfill, then buy cement, sand and crushed ...
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1answer
182 views

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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1answer
192 views

How do I know when concrete needs replacing rather than just mud-jacking?

I have a concrete driveway and path to my front door. Much of it has become unlevel and I'm contemplating having it mud-jacked. However, before I do, I wanted to know how I could easily tell when a ...
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2answers
8k views

How can I level my basement floor, which has a 4-inch dip?

I googled today on how to level a basement floor. Most people recommend using SLC (self leveling concrete)... I don't think I can just use that because of the pitch of my floor (and from what I hear, ...