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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How can I edge concrete without an edge trowel?

How can I make a concrete floor (also using dry shake color hardener) with a proper edge, without using an edge trowel? In Brazil I cannot find an edge trowel anywhere, so I would like to know if ...
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960 views

Which is better/safer for cutting concrete slab, hammer drill or angle grinder?

I have to cut a 100x500 mm hole in a concrete slab that is about 80-100 mm thick. I think that I have two options to do that: 1) 9" angle grinder with segmented diamond disc: cut the long sides, then ...
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1answer
441 views

What is the best way to secure (2x6) wood framing to the concrete portion of the garage opening?

I live in a raised ranch. The lower half of the house is divided into a 2 car garage and a living area. Also the lower half of the house has 8 ft. ceiling (about 4 ft. concrete walls and 4 ft. wood ...
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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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1answer
4k views

Are cracks in a newly poured concrete basement floor a problem?

I'm having a new home built and found a large crack in the newly poured concrete basement floor and wanted to see if it's something I should be concerned about. The floor was poured sometime in the ...
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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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5answers
7k views

Can I build a deck this low to the ground?

I want to build a deck off the back of my house. The door is near grade level, about 1' above. The grade doesn't have very large slope, so that means that the beam at the far end would be below grade: ...
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1answer
361 views

How can I drill through concrete blocks to allow drainage from my backyard?

My back yard has a brick floor and is surrounded by a concrete block wall. In heavy rains, the yard pools with rain water. How do I go about cutting drain holes in the wall or floor?
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How do I move a slab of concrete?

I want to build a fence in my backyard by my garbage stand is sitting on a concrete slab and that slab is in the way of where I want to put the fence so I want to move it over a few feet. The slab of ...
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136 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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2answers
239 views

What 'quick & dirty' finish for a concrete floor

I am moving into a new home for 1-2 year period. Its an old office building and the landlord is flexible with how I decorate; as it will eventually be totally gutted and renovated. My 3 rooms are ...
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1answer
443 views

Attaching sill plate to concrete, how do I attach framed wall to sill plate?

I am building a 12x12 shed on a concrete slab. I am going to bury j-bolts in the wet concrete so that I can attach the treated sill plate to it. The problem I'm running into is that the nut will be ...
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210 views

How to hang shelf on 2cm thin wall?

I would like to somehow saw out a wood board that fits into the corner as seen on the picture below. The problem is that both walls are only 2cm thin. The shelf needs to be able to hold a pair of ...
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1answer
373 views

Concrete Mix for making small objects [closed]

I want to build desk objets out of concrete, such as the ones in the images below ( i don't own any of them, they have been taken from around the internet). ...
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3answers
583 views

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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2answers
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What should I do about a crack in the concrete slab in my living room?

We purchased the house about 2 years ago. The house is about 50 years old. Today we removed the carpet and the hardwood floors under the carpet. We found out the slab has an approximately 10ft long ...
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1answer
834 views

What should I do about my concrete shower curb that I did not remove all the air bubbles from?

I'm building a concrete shower curb and pan. I built the curb and when I removed the 2x8 forms I notice that I didn't pack the cement all the way to the bottom in some parts: A bit crumbled and ...
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1answer
447 views

How do I flatten my uneven concrete floor?

We have an old Victorian house with a concrete floor throughout the ground floor. The ground floor is partitioned in two by a dividing wall and french doors. From the front of the house to the ...
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2answers
4k views

How do I seal a large gap between slabs to avoid freeze/thaw heaving?

I have a very large slab patio on the back of my home in Southern MN that has pulled away from the house about 6-8" due to freeze/thaw heaving. The previous owners have filled the gap with river ...
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1answer
291 views

How to secure bookcase to drywall right over concrete without drilling concrete?

I got some tall bookcases and want to set them up against a wall in a condo. The wall is shared with my neighbor and as such it seems to be a half inch drywall right over a concrete wall, so I don't ...
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2answers
99 views

Repairing animal damage in concrete driveway

My driveway has a few separate slabs (is this the right terminology?) and an animal has been digging in the gaps between two slabs. The gap is 1 - 1.5" wide. It looks like the rain is washing away the ...
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2answers
326 views

Building on top of 3/4'' plywood subfloor

I want to build this: http://www.mrmoneymustache.com/2012/12/21/how-to-make-a-relatively-sweet-shower-cheap/ and I'm building in my basement bathroom: on top of the foundation I have 2x4 (horizontal) ...
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1answer
162 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
141 views

Removing concrete lip at garage

I am interested in removing a garage concrete slip (31"Wx8'4"Lx1.5"H) to accommodate a storm shelter (4'x8'). The slab is post tension. The project entails a diamond blade set to cut at a height of ...
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90 views

Repairing exterior cement wall

I have an exterior wall on one side of a brick building that appears to be stucco or cement. Some of it is starting to come off in sheets. Basically, there is one layer, maybe the thickness of orange ...
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3answers
840 views

Easy way to remove tile concrete from bathroom wall?

Are there an easy to to remove tile concrete from the wall? Are there e.g. some way to get it off in whole pieces so cleaning up afterwards will be easier? Here is a picture of the wall in question. ...
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2answers
2k views

How many concrete piers do I need to support a 10 x 10 wooden floor supporting a 1600 lb shed?

Aptos, CA, United States. As you've probably noticed from my prior post, I'm in the process of building a foundation for a garden shed. My specific county/region does not have strict ...
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82 views

Applying thinset to concrete floor

I am planning to install ceramic tiles with a "Warmup" heating element beneath them. My first step is to install 1/4" insulation boards on the concrete floor using non-modified thin-set. The floor ...
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3answers
16k views

How do I remove THIN layer of carpet glue from concrete?

The folks who owned this house before us were the cheapest people around. They glued carpet to our concrete floor with a very thin layer of glue. Now, I'm having a terrible time scraping it off. I ...
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2answers
269 views

How can I fix my concrete front porch landing

My front porch is concrete, but it's too far below the front door, so there is a landing. The landing is also concrete. However, this landing is not long enough (in the travel direction, IE when ...
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4answers
453 views

How can I prevent cracking in concrete (or earthen) walls from the freeze/thaw cycle?

I'm interested in building a garden wall from either concrete or rammed earth, or a mixture of the two, but I'm concerned about Michigan winters and the havoc they wreak on everything solid. It seems ...
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2answers
2k views

How powerful of a hammer drill do I need to make holes in a concrete ceiling?

I want to mount a cornice for curtains on a concrete ceiling. So I believe I need some kind of hammer drill. I would like to know, how powerful should it be for this kind of work?
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1answer
286 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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Can I add cement glue and sand into my concrete mix to repair my cenent garden statue?

I have a leopard concrete garden statue that was given to me by my neighbor that has a broken foot and log. I want to repair it and paint it. It also has been weather eroded so I need to recover it as ...
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2answers
151 views

How should I waterproof a concrete roof?

We have a 28y/o Medical Clinic in a remote area of Haiti. The roof is concrete and has one coat of DryLoc on it which is lifting off in many areas. The roof is 136' X 35' with a very slight pitch to ...
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2answers
2k views

How can I prevent this concrete block wall from falling over?

I have a concrete wall that separates my backyard with my neighbor’s. It has been there for decades (at the very least 30 years). I have a slope of about 30 degrees and have noticed that the wall is ...
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3answers
21k views

How can I repair the cool deck around the pool?

In places around the pool the cool deck has flaked off and I can see the bare concrete. The previous owner tried to patch it in places but it looks horrible because the texture AND color don't match. ...
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1answer
449 views

How can I get the 2-part epoxy smell out of concrete?

Six months ago or more, my friend used a 2-part epoxy (no longer have the packaging, but it's a double-syringe with clear liquids, purchased at Home Hardware) on something, and some of it (one or both ...
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2answers
2k views

How should I paint my basement floor?

I have an 80 year old basement concrete floor that recent had asbestos tiles and mastic removed. It is in good shape, with a few hairline cracks. I am planning on painting it. The basement is dry, ...
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2answers
1k views

How long can I store a bag of Quikrete?

I had planned to find a nook in the low-humidity house in which to shove it, but it would be interesting to know how long the bag will keep in various humidities. The main question is: How long can I ...
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1answer
521 views

How do I dig out a hole for fence posts in a concrete patio?

I'm installing a short fence to run from the side of my house to the external garage. It will run along a seam where my asphalt driveway meets my concrete patio. I'm fairly certain that the footers ...
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4answers
3k views

Can I float a tongue-and-grooved 1x12 pine floor over a concrete slab on grade?

I have bare concrete floor that was, until recently, covered with carpet. After recently seeing a friend of mine purchase raw pine, shape the tongue-and-groove himself, and seal it to achieve a ...
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1answer
155 views

How can I temporarily cover up a bathroom door to a shower room?

We are having a local swim meet and we need to temporarily cover the doors to the shower/bathroom on the pool deck to keep parents and others from coming on deck. The doorway is concrete block ...
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1answer
899 views

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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1answer
229 views

How can I patch my slab around a rough-in pipe in a difficult to access location?

I've got a situation similar to this one (slab finishing/patching around roughed-in plumbing remodel), but in my situation the finishing job poses a couple extra problems: 1) The trench routes under ...
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166 views

How do I level a summerhouse concrete base that dips in the middle?

I laid a 4x3 metre concrete base for my summerhouse/office thing. The corners are all level and so the summerhouse sits fine, but it dips in between and so the load bearing battens aren't taking any ...
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2answers
170 views

How do I go about making 1“ and 2” thick “boards” for concrete furniture?

I have designed a cement feeder for hogs, for my hobby sized farm. It is generally based around a professional one we already had. I have planned on different parts of it being 2 inch, 1.5 inch, and ...
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1answer
3k views

Are there any advantages to using metal post spikes set in concrete when building a privacy fence?

My neighbor and I are considering alternatives to wood-in-concrete fence posts for a privacy fence that can have significant wind load in an area that gets up to -30 degree frosts in winter. The ...
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4answers
3k views

Should gloves be worn when working with concrete to prevent it from coming in contact with skin?

I was told recently that concrete is slightly corrosive. Should gloves be worn when using concrete or is it fine to handle concrete as long as its not done on a regular basis?
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2answers
351 views

How deep should I drill a pilot hole in concrete for a 2 inch screw?

For fixing a 2 inch screw on concrete wall, how should I drill for good strength and no damage to the wall. I tried a 2 inch screw and drilled for 1 1/2 inch and later tried to screw it into the hole. ...