Questions tagged [concrete]

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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What should I use to patch this gap between brick siding and top of foundation

I have a small gap between the top of our foundation and the start of the brick siding in one isolated area and was wondering what the best material would be to fill this area.
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Leveling options for an uneven concrete floor in basement?

I live in an old house (somewhere between 1870 and 1920) with a retrofit basement. I also have a high water table, so during the spring rains, we get a trickle of water in the basement ( we've come ...
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removing pebble overlay from concrete base

I started using a power washer in unison with a pole with a heavy metal edge on it. It's going tremendously slow. My question, if I rent a concrete grinder from Home Depot, would that remove this top ...
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Recipe for sand topping mix and concrete overlay for patio refinish

I would like to resurface my cracked and crumbling brick patio with stamped concrete. It is 5000 square feet so I need to find the most economical solution. I am thinking of using a sand topping mix ...
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Is a concrete slab required to support a block wall?

I'm starting to plan my build of a backyard grill station / pizza oven. I plan to build a concrete block wall about 4 feet high. I'll put either concrete or stone surface on top, as well as a 1600 lb ...
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How can I attach wooden shelf ledgers to concrete foundation walls?

I am installing some garage shelves for my friend. She wants it strong so she can climb up them, and load it with heavy boxes. It’s no problem for me except that these walls, which will go floor to ...
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Can I create concrete driveway with forms to get the paver stone look without the need for all the aggregate beneath?

We are in desperate need of repaving our backyard that serves as a parking lot in addition to redoing our driveway. After weighing the pros and cons and taking in aesthetics we are interested in doing ...
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How soon after laying is concrete drillable?

I made a small concrete patch along the edge of a room that I would like to set a PT 2x4 base plate on for framing. I prefer drilling and screwing with a lead anchor over using power actuated nails. ...
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Installing a porch over a concrete patio, issues-concerns?

I am working on a house right now and we are trying to figure out what to do with the backyard. Right behind the house there is a 4" concrete pad. It is about 14'x25' and sits pretty flat with a ...
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Is it necessary to seal a newly patched basement floor in an old house?

We recently had the basement drain system replaced in our 1930s bungalow. This required removing sections of the concrete floor and filling the parts that were removed with new concrete when the job ...
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How to mount header bracket for garage door opener to concrete wall?

The anchor of the header bracket securing the garage door opener's rail to the concrete wall above the garage door came loose over time and with vibrations (details in a previous question). What is ...
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What kind of bolt is this? (securing the garage door opener rail to the wall face)

It was used to secure the wall mounting bracket of the garage door opener's tee rail to the concrete wall of the house above the center of the garage door opening. The bolt was inside an expanding ...
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How to pond concrete

I recently got interested in making pots out of cement. The most practical curing method for me is ponding/submergence. When is concrete ready to pond, how can I tell when it's ready, and what should ...
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Foundation pier repair

I have a rather unfortunate problem, rats got into my crawlspace and managed to tunnel directly underneath one of the internal piers(there are quite a few down there, maybe every 8 ft square? I am ...
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Can I drill a 5/8" (16mm) hole in concrete with a cordless hammer drill?

I need to drill a 16mm (5/8") hole in a concrete wall. All I have is a 20V DeWALT DCD795 drill (which has a drill driver and hammer feature) and the appropriate drill bit. Someone suggested to me ...
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Foundation design for a small cabin

I'm planning to build a 14ft x 16ft A-Frame on grade in Vermont this summer. The frost line here is 4ft. My site is at the top of a small, wooded knoll. I know from some exploratory digging that The ...
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Can you glue backerboard to concrete then tile over?

Want to know if you can glue backerboard to interior concrete wall for kitchen backsplash. Can’t drill as it’s a condo concrete wall. Concerned that tiles will shift as concrete wall shifts. Thanks
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Toilet flange concreted into floor, replacement?

I've got a toilet on the concrete floor. The old flange has rusted and disintegrated at the hold down bolt slots. But the flange is actually cemented into the floor. I think my #1 option is to cut off ...
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Close up drafty gap between wood beam and concrete wall?

Lots of cold air coming through a variable narrow - about 1-2 cm (0.5 in) - gap between a wooden beam and the concrete wall in the basement (image 1 below). What can I fill it with? Worried about ...
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Fixing grade on concrete garage floor?

Here is a concrete garage floor that has a pitch and/or concavities that cause water to puddle inside the garage in the middle of the slabs instead of draining out the front. What are realistic ...
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lead in concrete stains

I live in an old lake house built about 1938 to 1940 and the entire slab is concrete and stained red, I was told that lead was used in the concrete when the slab was poured. Is this true and how do I ...
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Is the electrical outlet by my kitchen sink supposed to be protected by a GFCI?

Aren't all electrical outlets near sinks supposed to have a safety reset switch? This one is for the garbage disposal but also has outlets for electrical equipment. Should I call an electrician or ...
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Concrete floor “too thin” for bolt and sleeve anchor

In our 100-year-old co-op building in NYC, I'm replacing a failed door stop with a heavier one to prevent our (very) hefty entrance door from smashing the doorway's marble. The door stop is intended ...
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Alternatives to bituminous membranes for concrete roof?

This new question is related to this old question I had previously asked, but from another point-of-view. I have a 13ft x 13ft rooftop made from plain concrete. It's leaking a bit, so I have to do ...
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Question Regarding Small Amount Of Grass Clippings Under Slab

Im going to be pouring my first ever slab in 30x26x4 dimensions. This is in North Florida with a high & dry sand base. I've removed the top layer of sod, then some... All with a flat shovel. ...
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Concrete Deck Falling Apart from Bottom

The concrete deck on my build-in-1937 house seems to be falling apart from the bottom. The deck itself is a 4.5 inch slab connected to the front of a brick house, and by two brick pillars in the ...
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Concrete mix too much Sand?

Hi Knowledgeable people, I've just dug up old fence concrete bases etc as fence blew down. Re done concrete bases, put posts up etc. And now I am looking at the concrete and am worried I've added ...
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Sunken area under bathroom cabinets

I'm remodeling a bathroom in a Houston, TX house that was built in 1969. After removing the cabinets on each side, I found that the concrete floor is approximately 2 inches lower where the cabinets ...
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How to cut wide shallow grooves in existing driveway slab

I want to create look of giant poured in place pavers on my driveway, using the existing concrete slab. Other than cutting all the way thru the slab and removing giant lines of concrete, then ...
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Pouring concrete slab against 2 block walls and an asphalt driveway

I need to pour a small (~5' x ~5') concrete pad that will butt up against 2 basement block walls (A&B in the diagram) and my asphalt driveway (D in the diagram). I'm having some trouble figuring ...
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How to mount these anchors?

In the mounted object (pull-up bar) there are 4 holes and in the kit there are 4 such anchors. One type has a metal sleeve, there's decent gap between internal bolt and the sleeve - it moves freely, ...
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108 views

Cheap way of attaching canning jars to a concrete wall?

Is there a cheap way of securely attaching a small glass Mason jar (like the one below) filled with water to a concrete wall? The jar doesn't have a top and it doesn't have a handle. I'll be using it ...
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How to install a wall-safe in a concrete wall?

Our walls are made of poured concrete. If I wanted to install a wall-safe, what would be the most efficient way to do that? When I added a vent to the bathroom I simply drilled a lot of holes next ...
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Faux Concrete Wall

I really love the look of a faux concrete wall, and I would like to try it using joint compound and liquid cement colour. However, I'm a bit nervous to try it as I've never done anything like it ...
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What kind of caulk should I use to seal up spalling separating from steel porch ceiling

I'd like to do some temporary quick patches to prevent worsening rust and separation of spalling/stucco ceiling underneath a steel outdoor porch/deck. One on the first floor is kinda bad so will ...
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Nailing baseboards using nail gun on concrete wall

I’m installing some baseboards in a new apartment. I have glued some of them to the wall, but the results have been subpar. Now I’m wondering whether it would be possible to nail the baseboards to the ...
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Filling an outdoor drain with concrete to reduce standing water

I have a semi-outdoor drain that looks like this (I have removed the grate): The container of the drain is plastic, and there is a good 6 inches from the bottom of the drain to the pipe where the ...
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Only apply primer to concrete roof?

Our building has decided to paint a 13-ft x 13-ft section of the roof that's leaking (just a few drops with lots of rain). This roof has a fence since it's an "outdoor" area that we all share, so it's ...
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Masonry bits dulling after 3-4 holes

I'm using an 18v makita hammer drill with a 3/16" Bosch blue granite turbo concrete bit to drill 2" deep holes into concrete-filled cinder blocks. With a fresh bit, it takes about 15 seconds to drill ...
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Rotating a concrete slab?

Is it possible to use a hydraulic bottle jack or similar to rotate a 10 x 12' x 6" a few degrees or about 5 inches? I have a recent pour not quite in position. 3/8" rebar throughout in a 6 x 6 grid ...
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Can I cut into concrete floor in kitchen?

I need to run a gas line for a new stove. No room in the attic so need a 3x3 inch, estimated 12 foot trench in kitchen concrete floor. Wondering if anyone can offer advice. I'm just concerned about ...
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Installing Fake boxwood on concrete vinyl siding

We are trying to add boxwood on what I believe is concrete siding and I believe the only way to do so is by making a frame on the back wall that will have to be drilled into wall. Can I drill in the ...
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Make a hole deeper than the drill bit is long

The longest drill bit I have is 23.62 inches and apparently the thickness of the concrete I need to penetrate is 27.5 inches. I don't wish to buy another drill bit, is there a smart solution? The ...
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Sealing coarse concrete rooftop?

I live in an apartment and I would like to seal a section of our rooftop with small leaks where water puddles (depth of puddle is negligible). The rooftop is "rough" concrete in the sense that it ...
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Weird orange rust spots appearing in holes on freshly painted basement cinder blocks

I've started to paint my basement with white primer, and on one wall weird orange spots appeared in the holes I had "filled" with the primer. The wall is made of dark cinder blocks which are pretty ...
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2-4 inch gap between crawlspace slab (floor) and surrounding wall - Why?

about a year ago I had my crawlspace conditioned. Among other things, the company put in a concrete slab for the floor and added a sump pump in the corner. The strange thing is, there is a 1-4 inch ...
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Shower head arm rusted through

My showerhead arm is rusted through and water is leaking out everywhere. The tube and its thread is through a concrete wall. I have no idea how to repair. I know I'll have to break through the ...
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Bathroom addition - pluming drainage problem

New here, and i am a rookie home DIYer. Looking for some help Me and a friend of mine(tradie who knows much more than me) have started trying to add a bathroom to an old double garage at the rear of ...
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Repairing finish on basement block foundation wall

I have a room in a partially finished basement which was done by the previous homeowner which is needing repair to the walls. The house is old (1925), and the foundation is concrete block. The room in ...
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My house is flooding and I have things plugged into an extension cord that is getting wet what do I do

I'm freaking out because the extension cord that has a lot of things plugged into it is on the floor this whole place is concrete floors and it's flooding or sleeping in and it's right there right ...

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