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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Load-Bearing (?) Cinder Blocks Half-Corroded Away

In preparation for patching and repairs, I knocked down all the loose material from an old, water-damaged wall. In the process, I discovered an area where a couple of the cinder blocks underneath the ...
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56 views

Ideas on how to hide sprinkler wires?

Just figured out how to wire sprinklers (yay!) but I've left myself with this pretty ugly situation. I was thinking of hiding the wire below the stone, but I'm not sure how to hold it. Can I drill ...
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53 views

What are my options for saving this building?

I have a small building on my property that is about 15ft by 10ft. The building sits on a slope that runs downhill sort of at an angle from one front corner to the opposite back corner. It sits on ...
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54 views

How do I repair a few broken concrete blocks in a stoop foundation?

I have a ranch home built in the 1960's. It has a full foundation under the front stoop. The stoop is a concrete slab. Settling over the years led to horizontal cracks about 36" below grade. In ...
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99 views

Fast Setting Concrete vs Regular?

Other than the ~1 hour set time of the fast setting stuff, are there any other pros or cons to it? We're looking at putting in about 45 fence posts or so and I'm running costs. The regular 50lb ...
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30 views

Adding a layer of concrete and tiles in the garage

I just wanted to get opinions on my plans to fix the somewhat sunken slab in our garage. We bought the house two years and (it's about 50 years old) and I have been monitoring the slab since day 1. ...
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49 views

Soil under slab (sidewalk) washed away and is now causing cracks down the middle

I have a 50' x 6' concrete slab in front of our basement that supports the same size wooden deck above with 6 post for the upstairs. The soil under it washed away due to poor drainage. I have fixed ...
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37 views

Creating a concrete mix with smooth texture

I would like to create a small concrete table(~.5m diameter). To do so, I would like to create a concrete mix with smooth texture, similar to Quikrete. Since this product is not available where I live,...
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23 views

What is the best way to protect a burnished concrete floor during construction?

I am doing a new build. The floor is burnished concrete done by High Trowel finish during concrete pour. I need to protect the floor afterwards. What is the best way to protect a burnished concrete ...
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2answers
33 views

Flattening Concrete for Dricore Product Suggestion

I am in the process of laying DRIcore panels in my basement. The ultimate plan is to lay laminate (Pergo) floor once we reach the finish stages. I have a few small areas where the concrete dips ...
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45 views

Ceramic tile on concrete with shrinkage cracks

I am interested in the opinions of any experienced tile-setters here as to ceramic tile or stone laid on concrete regarding crack isolation. I am building a new house with lightweight concrete poured ...
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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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93 views

Replacing a crawl space with concrete slab

I have a 1970 rental house that is prone to flooding the crawlspace approximately 1 week a year. To clarify, the whole section of land, yard, and streets are under a foot or more of water, due to ...
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Should I set wood fence posts in quikrete with no supplemental water?

Setting wood fence post---I've heard to set wood fence posts using quikrete dry, allowing it get moisture from the ground. Is this a good idea?
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39 views

Raised Concrete Patio Drainage

I recently purchased this house which has a raised concrete patio in the rear that has a large depression in the middle probably 4' wide by 6' long. You can see the cracks in the concrete where the ...
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4answers
208 views

How to support the side of concrete steps?

Last spring, we decided to remove a concrete walkway (and much of the soil underneath it) behind our house and replace it with either a pea gravel or decomposed granite patio with boxwoods and a fire ...
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How much concrete for a fence post?

We're going to build up a 4' fence around our property sometime in here in the spring or summer with 4x4 posts. I've seen that you should bury 1/3 to 1/2 of the above ground post height; so this ...
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1answer
80 views

Anatomy of a concrete wall – what are all these layers called?

So my partner and I are trying to resurface a concrete wall in an old house in Taiwan. Before I get into the nitty gritty of asking how, I just want to clarify my terminology first – I think I've got ...
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112 views

Can I drill a small hole in a concrete beam?

I need to pass a bipolar electrical cable through a concrete beam (30cm high, 15 cm wide) (12x6 inches). The hole would need to be about 1cm (3/8"). Is it safe to drill through it? There is no wall ...
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114 views

Hanging clothes on a line between concrete pillars without drilling

Question says it all: I'd like to hang a "light" load (say 30 t-shirts/pants) between two concrete pillars, without doing anything permanent to the pillars, like drilling (they are public property and ...
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1answer
36 views

Relatively new concrete porch crack

About 6 months ago a contractor poured a concrete slab to serve as a porch. The slab rests directly on the ground and measures 25' by 4' and is 4" thick. The slab has remesh under it, no gravel, but ...
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1answer
67 views

Can I pour concrete next to my foundation?

I'm planning to install a 4x4 fence into the ground by digging up a hole, adding some gravel, then pouring concrete in. Is it a problem if the concrete touches the foundation of the house? I've added ...
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4answers
450 views

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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1answer
60 views

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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1answer
36 views

Concrete stairs substrate preparation and layering

I need to pour small stair entry into my basement, about 4 steps and it is narrow, with a brick retention wall on both sides. I was going to first evenly grade and pack the dirt, then put gravel, ...
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24 views

Gravel under concrete stairs

Laying gravel under flat concrete slabs is easy because the levelness of dirt bed makes it easy to distribute it evenly. But when preparing to pour concrete stairs on a graded bed, what are good ways ...
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462 views

How can I properly support a raised concrete patio?

I am planning on building a raised concrete patio. I would like to build the perimeter of block and fill it with stone and then cap it in concrete to be finished with blue stone later. The patio will ...
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291 views

Concrete patio against the house

I am going to be starting a project in which I will be pouring my patio next to my home, it will be approx 10' x 50' The home is on a concrete slab, no basement. I have to two questions. What is ...
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111 views

Is a floating perimeter slab a good approach for a dirt-floor shed?

I'm building a 16' x 7' shed and chicken coop in Seattle. I want it to have a dirt floor and be safe from predators crawling underneath. I've been struggling with how best to do the "foundation". I ...
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1answer
39 views

Where to install underfloor heating under tile; thinset layer or concrete?

Putting in either a thermal wire/mesh (SunTouch) type underfloor heater or carbon film under tile. The subfloor is OSB. Going to pour 3/4" of LevelQuik Self-Leveling Concrete (replacing Gyp-Crete ...
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2answers
702 views

Installing Drywall on Concrete Ceiling?

I have a concrete ceiling in my basement and would like to cover it with drywall. Specifically, I would like to take the flat surface concrete ceiling and put another ceiling under it so that I can ...
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53 views

Self-leveling alternatives to gypsum concrete (Gyp-Crete, Pyrofill, Securock) over OSB?

Replacement options for < 1.5 inch pour? Details: Bathroom remodel (new tub, tile wall/floor, toilet, vanity). Old tile floor came up with finger pressure, found that the gypsum concrete ...
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32 views

Do I need a vapor barrier on an 8" pour + carpeting over tile?

So I am finishing my basement and the side I'm finishing has an extra 4" pour on it as well as old 8x8 asbestos tile. My plan is to carpet over it. Do I need a vapor barrier? I get that concrete is ...
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96 views

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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66 views

Is permeable concrete suitable for a houses foundations?

I'm curious if using permeable or pervious concrete for all or part of a houses foundations would provide excellent flood protection? Would it be strong enough to support a house and if not could it ...
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37 views

Failing foundation outside wall looks like it is buckling but it's not

My contractor poured a grey beam on the outside of the failing wall but it over time made it worse. I was wondering if I make a 3 plate beam out of 2 by 10 approx 20 feet long put it on the inside on ...
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49 views

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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Load Bearing or Not How Can I Know For Sure

We have an unusual 3 inch thick poured concrete floor in a steel mesh in the ground floor of our house, under this is a basement like area with an old riveted steel across half of it and a couple of ...
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1answer
59 views

Can I use mortar to fill channels in a concrete floor?

I recently had central heating installed in my 2 bedroom ground floor maisonette. We installed all the pipes in the channels which we dug in the concrete floor. I have covered all the pipes with ...
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3answers
69 views

How can I achieve a Quartz look using concrete for a bar top?

I want to make my own concrete bar top but I would like it to have a bit of a sparkle like quartz has. Any suggestions?
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2answers
55 views

How to mount handrail to drywall over concrete

Any help how to hang the railing back up on the stairway. It is townhouse wall with drywall and concrete behind it.
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2answers
366 views

How to cut concrete block with a circular saw

I have some concrete blocks that are 4 inches by 6 inches. I need to cut them in half at a 45 degree angle. Can I do this with a circular saw and a masonry blade ? I would also make a jig to cut ...
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3answers
48 views

What is a suitable mold material for a concrete bar top?

I would like to make an L-shaped concrete bar top (single piece). However, I want to make the corner have a large curve (12-15" radius?). How can I create a mold to accomplish this? What materials ...
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57 views

Can a seat wall and fire pit be built on existing pavers patio?

I have an existing circular area in my uncovered paver patio area. I would like to have two curved seat walls, either stucco or stone veneer with flag stone or cement seats and no back, and a fire pit ...
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1answer
56 views

Wall leaks due to rotten wood in footer!

My home was built in 1979, and I have a small leak in the basement. It appears to me that the water is coming from a piece of 1x4 that is embedded in the footer, presumably this wood goes all the way ...
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1answer
205 views

Cleaning indoor concrete floor without damaging it

I just finished helping a colleague clean out his (large) garage at his new house. He's gradually converting it to a indoor gym for himself and his kids (ie: indoor swing set, toys, etc, with a small ...
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16 views

Mount wooden post onto uneven concrete [duplicate]

Hi I'm wanting to mount a 112x112x3000 post onto a concrete slab. I have purchased L shaped brackets to do the job. Because the post will sit at the edge of the concrete I can install at most three ...
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1answer
111 views

Installing long 20ft metal poles in concrete around a football pitch

I work at a football club and I need to install some long 20 ft metal poles into the ground set in concrete. My question is how deep must the holes be and what diameter hole needs digging. The poles ...
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2answers
78 views

Concrete Floor for 400 Gallon Water Tank

I am planning to build a concrete slab on a soil surface to hold a 400 gallon water tank (Shown Below). I want to make it 7' x 7'. It should hold about 3,500 lbs. Would I need to put in rebar? I've ...
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2answers
62 views

What material provides semi-permanent, strong bonding with a concrete floor?

The professionals doing repairs at a workplace seem to be capable of patching stairs with material so tough, and make it stick to the existing cement with such strength, that the patching survives ...