Questions tagged [cement]

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1answer
66 views

Did the contractor installed the new layer of cement flooring correctly?

I apologize if this is not an appropriate question. I'm not really sure where to ask or who to trust. I have a basement that the ultimate plan is to put epoxy, but before we can get to that stage, ...
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1answer
165 views

cement cracked around mailbox

I cemented my mailbox to hold it steady but the cement cracked and now it is wobbly. Does anyone know why that happened? I probably need to dig the concrete out and replace it with new concrete and ...
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1answer
82 views

is this fungus?

There is water constantly flowing from the balcony of my neighbor on the asphalt and in turn splashing on the wall. There's a huge permanent stain there and looks like something fishy: Is this ...
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2answers
101 views

Is lime based mortar weatherproof?

I recently did some outside brick wall patching and tuckpointing. Since the old mortar was whitish, I didn't use the gray ready mix from the Home Depot but I mixed my own, the same what I used for my ...
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1answer
1k views

What mortar mix for flaunching on chimney stack?

What mix and sand\cement ratio's should I use for replacing a chimney stack flaunching? I've seen suggestions to add some sharp sand to the building sand, and other suggestions to add lime or ...
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2answers
801 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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3answers
381 views

How to fill a hole in the living room?

There is the circular hole in the floor in my living room near radiator which leads to a relatively big space underground! If I want to judge using my eyes,I think the size is around 50cm/1.5feet ...
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1answer
373 views

Poured Cement wall repair and stucco

So I live in Ecuador and this house has been forgotten for 15 years. All of the walls are poured cement with stucco on them. This seems to work fine, except at times the water seeps in and ruins the ...
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2answers
51 views

How to seal crevices in dry stack rock wall to prevent gopher activity?

I've recently had a retainer wall built in the landscape using the dry-stack method (see photos). Unfortunately, there has already been two occasions within past month of gopher activity behind the ...
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0answers
106 views

Capping a toilet where flange is in cement

I have a couple of questions with the project I am working on. A little background. We currently had a bathroom right when you walked in from the garage. We never use it. Builder of house put it ...
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0answers
24 views

Basement has crack over a drain run no water leaking

I'm trying to figure out how concerned to be. Most of the basement has slate tile, but I tore out a kitchen, and discovered this crack running from the nearest wall, to the sink drain, and on across ...
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1answer
1k views

The best way to secure utility sink legs to concrete floor

I have a utility sink with metal legs which was never anchored when installed and would like to anchor it to the cement floor. Don't want to go to the expense of using Tapcon screws. Thanks for your ...
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0answers
539 views

How to repair broken suspended cement slab

The very corner of the cement slab, which forms the floor of my basement, broke off. There was nothing supporting it underneath. the portion that broke off forms a triangle 11" x 10" x 14" x 3-6" ...
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2answers
186 views

replumb leaning post

6 ft tall 4x4 PT post out of plumb by 1-3/8". Excellent condition. Years old. Set in cement. Rock solid in part because tree roots have encased the cement. Tree too valuable to risk damaging roots by ...
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0answers
65 views

How can I improve a poorly-done concrete patch in a basement slab?

I had a plumber dig a trench to rough-in a bathroom in my basement. The concrete repair was done fairly poorly. It had areas that bumped up higher than original floor. I had them come back to fix it ...
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78 views

Repair garage floor

How do I repair the cement edge to the entrance to my garage.
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70 views

Description of Concrete Classification Numbers (e.g. C15, C25 etc.)

I was reading my plumbing code and came across mysterious concrete classification numbers like C15 and C25. I tried googling it and only came across a couple of sources describing these numbers (like ...
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0answers
356 views

What causes these chips in a cement brick wall, and how can I fix them?

I have found my exposed basement cement wall which is about 15 x 10 in size to have quite a few areas where there is a cracked chip ranging from approx 0.5" in diameter to 2" in diameter and a few ...
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0answers
75 views

Should I use platicizer as an additive to mortar

I keep having problems with the joints in my patio flags, after each winter the joints often break up and it is a major job to keep the patio in good condition. I usually use a mix or Portland cement ...
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3answers
3k views

What could have caused an electrical shock from a concrete patio?

I didn't feel it myself, but my son-in-law and my own son said they were shocked when they touched the cemented ground in our backyard. We bought a new metal fire pit which we had set up and both men ...
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0answers
433 views

How to fix concrete delamination

When I made some concrete flooring (my first time doing it) I finished the surface while there was still bleed water (I didn't know it better back then). Now 2 months later in a few areas there is ...
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4answers
90 views

Mounting pull up bar on cinder block wall

So, I've read through a bunch of stuff online for mounting a pull up bar to a cinder block wall and before I go out and rent a hammer drill I want to see what would be the best anchor system for my ...
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2answers
6k views

How deep do I cement a 21' tall, schedule 40 galvanized steel pole?

I have recently installed a new basketball goal for my kids. I now need to install a net behind it as the balls tend to end up in the neighbor's yard over and over again and it drives their dogs crazy....
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2answers
86 views

Material lighter than concrete for planters?

I'm trying to build several 24"x 24" square planters with each wall 1.5" thick, similar to the following picture. The issue is that each one of these planters will weigh at least 200 pounds (without ...
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1answer
106 views

What is an alternative to a cement truck that would allow more working time?

I'd like to know if there is an alternative to a cement truck. I'm planning to build a sports court which requires me to build a concrete foundation. I asked the cement company and they said the ...
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1answer
195 views

how to make a half circle tunnel through a cement slab?

There is a slab of concrete in my backyard, and I need to make a half circle cut out in it like this picture below. This is for a 3" pipe to sit in. How would I go about doing this?
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1answer
34 views

epoxy grout in contact with regular sanded cement grout

We don't have a floor threshold between the bathroom floor and the corridor. is it a bad idea to grout the bathroom floor with epoxy grout and the rest regular grout? what happens if the epoxy grout ...
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1answer
54 views

Plywood vs cement board for shower alcove

I'm building a tile shower, have the pan set and most of the cement board up. I've come up to the height where the shower alcove (or niche) will go. General searches have shown most people cutting ...
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2answers
54 views

How to patch small holes in concrete slab basement floor?

I am preparing to install luxury vinyl plank (LVP) in my basement (specifically CoreTec Pro). The subfloor is just concrete slab. Previously this room had carpet with tack strips nailed to the ...
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1answer
49 views

Patch hole in cement slab when ground below is excavated

I removed a shower stall and there was a hole for the plumbing as expected but once I got a good look the entire area below the cement slab is open. I want to fill the whole as the bathroom is being ...
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1answer
27 views

how to level out basement cement crack

I plan on laying some vinyl planks onto cement but there are some cracks from leveling in the cement and with the new flooring you can "feel" where the cement barely sticks up at the crack. Wasn't a ...
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1answer
159 views

Gravel and Cement Use for Chain Link Fence

I've seen different recommendations online so I'm looking for some clarification. I'm building a 4' tall chain link fence. 1) Do the terminal and line posts need 4" of base gravel in the post holes? ...
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1answer
480 views

How to repair garage slab after plumbing brought in

The corner of the slab in my garage was removed to bring in plumbing. It's been backfilled with ~3 feet of dirt (slab was 2ft thick). What is the best way to repair this? I'm thinking I'll dig out ...
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1answer
688 views

Securing slate tiles over outdoor cement slab

Here's a cement patio that was covered decades ago with slate tiles. Some along the edges have popped up. Underneath the popped tiles we can see that the slab has cracked. What are proper and/or ...
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1answer
769 views

Do I need a backer rod?

I need to make a water tight joint between the garage wall and the pavement: I have cleaned out the debris from the gap and blasted it with water to remove all the loose little things. Now, I have ...
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1answer
153 views

How can I run a line under a cement sidewalk

What's a good way run a length of 2" PVC underground from one side of the porch to the other. I'd use it as a culvert to route a garden hose in the long term. The cement step and walk are 4' wide. ...
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1answer
36 views

What to do with concrete/cement runoff from cleaning tools?

I'm completely new to working with cement/concrete. I can follow various guides online (I'm only looking at really simple loose-brick fixing for now). However, no guide makes clear how I should ...
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1answer
35 views

Do these plastic molds exist?

I want to make a few concrete pavers, so I started looking for a few tutorials, and found this youtube video. In the tutorial, he uses a plastic mold where he pours the concrete. Something like this: ...
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1answer
59 views

Installing tile on screened porch

We have screened porch that currently has outdoor carpet on the floor. We want to get rid of the carpet and maybe tile the porch. There is standard decking under the carpet. I have been told by both ...
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2answers
225 views

Is there any way to remove hydraulic cement from a concrete slab without ruining the concrete?

So the previous owners of my house put hydraulic cement along the edges of the wall in the garage and it looks pretty ugly. Is there any way to remove it? I've seen these Portland Cement dissolving ...
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3answers
43 views

1/4" Hardibacker cement fiber board for shower walls

I'm preparing to lay tile in my new bathroom and I picked up the cement board but when I got home I realized I bought quarter inch instead of half inch thick sheets. The Hardibacker website says that ...
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1answer
54 views

Cement pool overhang patch or replace

I have a pool with an overhanging cement edge that crumbled away. I have one contractor that said we should replace it and another that said we should just patch it. Here are some pictures of it. ...
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1answer
969 views

How high can I pour cement against my house

How high can I pour cement patio against my brick house? I want to go as high as I can without causing other problems.
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1answer
169 views

How to smooth cement trim/moulding on pillars?

I'm getting my house painted and have about 20 decorative concrete pillars with cement trim/moulding (see pics below). The first contractor turned out to be a rookie and basically slathered paint on ...
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1answer
609 views

Cement Recommendations for Fence Posts

I am planning to event a fence this summer and, given the size of ~ 250 linear feet, am looking for the cheapest option for cementing the poles. I am considering the use of metal Postmaster (...
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1answer
72 views

How to fix chipped cement

I chipped the cement on my wall by accident. What product can I use to easily fix that? Do you think I can use Quikrete? It's going to be about 0F (or -17C) tonight. What do you think? Will the ...
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1answer
195 views

What are options for finishing cement block walls?

Our basement and foundation is cement blocks. What are my options for finishing the walls? I can't put drywall directly on the wall correct? Would i have to fur out the wall? Its a cabin, so is wood ...
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1answer
163 views

crack in foundation wall, QUIKRETE Hydraulic Water-Stop Cement

I'm in the middle of repairing a crack in my 30+year foundation wall using QUIKRETE Hydraulic Water-Stop Cement. It's been repaired before, I've been in the house for over 10 years, previous owner ...
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2answers
167 views

Making cement look glossy

I'm trying to paint my porch, but I was wondering how to make the cement kind of glossy. I want it to look like marble. What can I do?
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1answer
675 views

tar joint between garage wall and asphalt

There's a kind of a gap between the asphalt and the garage which causes moisture to accumulate there. I'd like to seal that gap by making a tar joint: https://www.homedepot.ca/en/home/p.sealant-...