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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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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Need advice on deck posts that will have concrete poured around them

I have a raised deck, attached to the side of my house on one side and held up by three posts on the other. Under each post is a small cement pad and the posts bracketed to those with a buffer piece ...
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1answer
18 views

What type of beam should be used over a split arch doorway?

I am building a building in Indonesia. It's using RC-frame construction. My builders don't have much expertise, nor do I. The basis for my building is three reinforced concrete pillars, 30cm * 30cm, ...
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1answer
25 views

How should I prepare the site for a concrete step?

just bought a house where we've got an existing concrete slab porch that is 12" above the adjoining sidewalk and it does not have a step. We want to add in a large 6" tall x 3' wide x 11' long slab ...
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2answers
8k views

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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1answer
207 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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27 views

Concrete with crenelated appearance [on hold]

enter link description hereCan anyone tell me the name of the crenelated concrete surface shown in the photograph, and what its usual/common purpose might be? enter link description here
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3answers
37 views

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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1answer
24 views

Are smaller or larger pavers better for covering a concrete patio?

I have a large ( 16' x 16' ) thick slab concrete patio that is pouted in 8 x 8 blocks. it has significant spalling and some settling. The concrete is 6" thick and situation in such a way that tearing ...
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1answer
20 views

laying a new bathroom sub-floor on to sand bed

The floor is fully ripped out and sand exposed. New plumbing ( wastes) in place but now to pour the new sub-floor. What do we do now? Approx. 0.5m3 for 100mm thickness.
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Damp concrete floor in bedroom

Had water overflow into bedroom and closet. New laminate floor removed. Concrete floor has glue strips from another flooring that is sticky in some places. Will thoroughly clean with as little water ...
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0answers
8 views

What to Look for in Professional Products for Vapor Sealing Concrete Slab

I'm planning to seal a concrete basement floor soon. While I haven't had any water problems, the basement has a smell to it which seems to be the smell of the soil/clay underneath the house. What's ...
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1answer
26 views

Can I build a car-port on the side of my garage?

I have a 2-car attached garage but three cars in the household. While I'm obviously aware I can just leave the third car in the driveway, it inconveniently blocks the cars in the garage and in the ...
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22 views

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
59 views

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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2answers
123 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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2answers
72 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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0answers
13 views

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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2answers
51 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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7answers
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
27k views

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
31 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
305 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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1answer
82 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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1answer
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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1answer
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
124 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
241 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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0answers
24 views

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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0answers
30 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
50 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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0answers
36 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
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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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1answer
60 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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2answers
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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1answer
30 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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2answers
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
263 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 ...
7
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4answers
147 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
20 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
149 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
33 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
23 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
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
103 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 ...