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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Ground preparation for deck pier block

I am planning to extend my deck, which uses pier blocks as below photo I cannot tell what's underneath this pier block because it was just dirt. There was no pour concrete for certain. So my ...
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4answers
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How to level out or grind down concrete basement floor?

I had a french drain installed in my basement and the top of its cement sits around 1/8" to 1/4" of an inch higher then the rest of my basement floor. I need to somehow level this out so I can put ...
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119 views

Should cement be placed under concrete slabs for driveways or is sand enough?

I am about to get my driveway full slabbed using normal concrete slabs like below (i will be using rectangle slabs as opposed to square). The builders that came to give me an estimate said it would ...
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69 views

What is the proper way to prevent water infiltration between exterior stairs and wall

My house has a full flight of poured concrete stairs (covered with decorative stone) that runs parallel to (and butts up against) an exterior wall. The interior wall had water stains at the ...
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Easiest way to replace mortar around door?

I have a stone house and some of the mortar around one of my door frames has completely eroded away, there are big gaps and I can now see the screws that once screwed into the mortar too hold the door ...
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44 views

What can I do to transition between concrete and drywall?

I am drywalling my unheated, partially-below grade exterior garage. A four-foot tall concrete wall runs along the parts of the garage that are below-grade. Above the concrete walls are 2x6 wood ...
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1k views

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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8answers
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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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1answer
28 views

How Should I Fill In a Hole in Slab Around Floor Drain

I think I have a good idea about how to go about this, but wanted to throw it out here to make sure I don't wander down the wrong path. I recently installed a new floor drain. I broke up the ...
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2answers
304 views

How do I remove concrete that has splattered on my brick pavers?

We installed a brick patio, and splatter from wet-cutting the bricks ended up on the installed bricks. How do I clean it?
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80 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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34 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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31 views

What drill and screws should I use to attach security bar to a concrete wall

I have a few security bars to attach to my garage window. These are the bars: http://www.ebay.co.uk/itm/291320181452?euid=37bd934e70374116905fb2a20e9f7fad&cp=1 I have the Face Fix Brackets. The ...
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1answer
108 views

filling in gaps in concrete patio

I have several 2" wide by 6' long spaces between the original patio slab and the newer slab that was poured after original construction of the house. The porch is covered so no moisture is getting ...
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3answers
117 views

How can I pour a concrete floor/slab with two levels?

I am pouring a slab for a concrete floor for an 1800 sq foot house and would like the bathroom area to be about 3/8" lower than the rest so I can tile it and wind up with the floor and seams that are ...
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2answers
240 views

Can I repair the cracks between the bricks in my fireplace?

The bricks surrounding my fireplace have cracks between them. It's as if the thermal expansion/contraction has eroded the mortor between the bricks. I have had some serious fires in there and haven't ...
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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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28 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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2answers
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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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33 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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4answers
18k views

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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1answer
59 views

Latex paint over concrete primer

I have put concrete primer on my poured concrete walls in my basement. I have enough of construction latex paint primer to go over it all again. Is it okay to use on top of the concrete primer and ...
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1answer
30 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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42 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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1answer
25 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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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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31 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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1answer
29 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 ...
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4answers
250 views

Best way to make a hole in concrete wall

So my house has concrete walls and ceilings. There a few places i would need to remove some large holes like for vents or light fixtures. I was looking at a concrete hole saw which seems to be a good ...
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4answers
138 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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1answer
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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
148 views

What is the proper concrete ingredient ratio for a patio?

I am pouring a 10X20X6 patio pad. It has been 15 years since I mixed a mass amount of concrete and the cement that I got is a little vague on the instructions. What is the ratio for ...
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1answer
31 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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1answer
22 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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2answers
147 views

Where to seam concrete countertop?

I'm looking to do a concrete countertop and would like some advice on where to make the seams.I was thinking either where the red or the yellow lines are. Thanks, greg
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1answer
191 views

How wide does a 6x6 concrete post footing need to be using an elevated post base anchor?

I'm building a pergola over a paver patio. The pergola will dimension 11'x 11.5' on center of post with 6x6 posts (4 posts), tied together with sandwiched 2x12 beams. I've laid out footer locations ...
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2answers
44 views

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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2answers
68 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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2answers
102 views

putting concrete footer with slab

I am going to install a pavilion on a concrete slab. I was wondering, if I install 4 ft concrete footers, should the top of the column be flush with the top of the slab to be poured, or the column be ...
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2answers
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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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10answers
64k views

Do I have to remove the old thinset before installing new tile?

I will be installing some new 12x12 tiles in two bathrooms approx 25 sq/ft each. When I pulled up the old tiles, there was no thin set that had made contact with them so the removal was very easy. ...
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4answers
918 views

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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2answers
39 views

What can I use as a concrete release agent for aluminum forms?

If I need to use aluminum sheeting as form for pouring concrete or another cement product, such as mortar/stucco, is there something (chemical) I can coat the sheet metal with so the cement doesn't ...
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1answer
60 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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2answers
66 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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2answers
90 views

Making sense of an existing sump system

I just bought my first house, but I can't seem to understand how the sump worked. I'd like to make sure it's hooked up and ready to go should the basement ever flood. When I first walked in, the ...
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2answers
853 views

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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3answers
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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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2answers
4k views

How big a hole do I have to drill in concrete to embed rebar in it?

I have a concrete patio that I'd like to use as the foundation for a CMU wall. I'd like the CMUs to be tied into the patio slab with rebar. I get that the gist is to drill a hole in the slab, put ...
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1answer
53 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 ...