Questions tagged [cement]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1
vote
0answers
530 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" ...
1
vote
2answers
184 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 ...
2
votes
1answer
1k views

Disposal of hydrochloric acid

I used hydrochloric acid and water to remove concrete from my tools (in a plastic bucket) but did not know how dangerous it was and how complicated the disposal process can be--first time using it ...
1
vote
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 ...
1
vote
1answer
53 views

How to dislodge bluestones sitting in cement? (Pictures)

I need to move this wall, but I want to reuse the bluestone for the new wall. So they need to stay whole. Luckily, there isn't any cement between the bluestones- they're just sitting in it. Has ...
1
vote
1answer
63 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, ...
1
vote
1answer
157 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 ...
2
votes
1answer
3k views

How can I fasten a threshold to concrete?

BACKGROUND A threshold was purchased from HomeDepot: The item comes with screws and needs to be fixed into concrete slab. I would like to understand how to properly screw the threshold into the ...
0
votes
1answer
685 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 ...
0
votes
1answer
158 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 ...
1
vote
0answers
77 views

Repair garage floor

How do I repair the cement edge to the entrance to my garage.
1
vote
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 ...
0
votes
1answer
751 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 ...
0
votes
2answers
154 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?
1
vote
1answer
35 views

What should I look for in a diamond blade?

I'm considering a 7" diamond blade for a circular saw, to be used to cut cement type pavers and short runs of concrete (driveway/sidewalk). Some blade designs are segmented/slotted, some not. Prices ...
0
votes
1answer
671 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-...
0
votes
1answer
49 views

Which subcontractor installs 2" foam board at footings and on poured walls?

Please, which sub installs the 2" foam board (northern climate) on footings and the poured concrete basement walls? excavator, or cement contractor, insulation contractor or ? Hubby and I are ...
-1
votes
2answers
628 views

What type of cement is used to repair foundations?

We're in the process of remodeling our kitchen and we just pulled up the tiles. We found a few spots where there are large gouges or holes if you will, in the foundation. I'm guessing they were there ...
1
vote
1answer
322 views

bathroom pipe joint leakage behind the ceiling tiles

There is a water leakage in the pipe joint behind the ceiling titles in my bathroom, as shown below(I glued some putty around the joint but it didn't work, the joint looks like the one on the left), ...
2
votes
2answers
186 views

How can I repair and waterproof a large crack in my foundation wall?

I recently just bought a house which was nice at first! Now after 5 month, it is now spring. We had a good rainfall which flooded my basement from the floor up because of a high water table (sump ...
0
votes
1answer
105 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 ...
4
votes
1answer
225 views

Why is the sand in my cement mixes so thirsty?

In making up cement-based mixtures, I always start with a water:cement ratio of 0.42:1, which is the optimal ratio. But whenever I make a mix that has a substantial quantity of sand in it (e.g. for ...
1
vote
2answers
834 views

outside cement wall chipped

I have a cement wall that has been chipped a little: What can happen to this wall over time? Will this deteriorate if left as is? In short: do you think it's important to fix this ASAP or this can ...
2
votes
2answers
533 views

Pouring foundations in cold weather, builder didn't protect them - how to tell if it is set right?

Our builders have just poured the foundations for our house this past Friday, but did not cover them to protect them from the cold. We experienced temperatures ranging from -2 to -7 overnight during ...
0
votes
0answers
1k views

Why is my concrete soft and crumbly after more than 14 hours?

So I'm trying to create a concrete pencil holder but the last few times I've tried, the cement has not dried and comes out really crumbly and is soft and damp and dusty, even after curing all night. I'...
0
votes
0answers
821 views

How to measure the ratio of a sand cement water mix for countertops

I want to cast a concrete Countertop and I created several test batches. I am confused by what I read and need some double checking. I use a mixture of 1 Part Cement 2 Part Sand and 0.4 Part Water ...
1
vote
1answer
566 views

Filling gaps between water pipes and floor/wall - what material to use?

In my bathroom, the water supply and drain for the wash basin are exposed. The 3 pipes run along the wall at floor level, like this: There's a small gap (a few mm) between the drain pipe and ...
0
votes
0answers
85 views

Hanging bed from cement ceiling

I saw a thread on here that kind of discussed this, but I am trying to hang a queen platform bed from a cement ceiling in a Loft apartment model. It will not be used, just more decoration, although ...
10
votes
3answers
5k views

What is this white powder on my foundation?

Can anyone tell me what this white powder might be? I was ripping up the carpet from my basement when I saw this underneath the padding and on the cement foundation. It's white and cakey. I at ...
0
votes
2answers
928 views

Raising and extending a concrete shed base, does the existing concrete need to be broken up?

I have an existing concrete shed base which is a bit cracked (due to a nearby tree) but generally OK. I'm planning to replace my 10x6 shed with a 10x14 one which will mean extending the concrete base. ...
2
votes
1answer
2k views

How to repair my concrete slab porch.

I bought this house a few years ago, built in 1926. Not long ago, what was a slight crack in the porch became much bigger when the concrete gave way. Now I have a serious safety situation and haven't ...
1
vote
2answers
5k views

Quikrete didn't absorb much water. What did I do wrong?

I am installing a hammock support post to support one end of a hammock. Following the manufacturers instructions, I dug a hole 18" in diameter to about 25" deep. Our soil is red clay, if that matters, ...
0
votes
1answer
149 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. ...
7
votes
1answer
2k views

What's the best way to level this basement floor?

Goal: Level basement slab in our 1905 Seattle home so I can install laminate flooring. Existing floor: 21' x 25' unreinforced rat slab thickness varies from ~2" at rim to as little as 3/4" near ...
2
votes
1answer
3k views

How do I calculate how much sand, cement and water I need for a specific volume of concrete?

I am using forms to build a decorative wall. The instructions say I need 38 liters total per form. The form ends up producing a wall section 200 centimeters long x 50 centimeters high. How do I ...
1
vote
2answers
100 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 ...
2
votes
2answers
8k views

What Cement Based Product Is Used for Smoothly Finished Floors?

I recently replaced a floor drain in my basement around which I had dug out the concrete, gravel and clay soil. When I sealed it back in, I laid down a bed of gravel and sand, and then used a ...
0
votes
1answer
1k views

Matching Concrete to Tile Floor Height (1")

We have a tiled dining room that transitions to carpet (carpet and pad on cement foundation slab). We'd like to tear out the carpet and level the concrete slab up to the tile flooring, about 3/4 - 1" ...
3
votes
2answers
943 views

New grout yesterday, efflorescence today - what do I do?

I just finished grouting my kitchen floor with unsanded dark gray grout (near-black "charcoal" according to the box, also it contains portland cement). Not long after the first section I started ...
0
votes
2answers
2k views

How to attach wall on top of french drain in basement?

I am in the process of finishing my basement and had an interior french drain system installed. I now want to start putting walls up but am unsure how to attach them on top of the french drain. I ...
2
votes
2answers
169 views

What is this cement coating?

I have this coating on my front porch which is starting to disintegrate. I think the porch slab is probably still good, so I want to just replace the coating but I can't figure out what it is. I'm ...
1
vote
2answers
2k views

How to make white portland cement stronger?

We are trying to make white pavers for crosswalks versus painting. In 2013 we made some that are still in fair shape, did not write down what we used as a formula. I think it was 3 to 1, one part ...
1
vote
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 ...
-1
votes
2answers
106 views

How do I start making cement on my own?

I want to make my own cement because its the most costly one for building house. How do I approach for making my own cement?
1
vote
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....
6
votes
5answers
28k views

How much does cement weigh after it has set?

I'm looking to make some weight plates for a home gym and so I am planning on using cement to make the plates. But I know that some water will be absorbed and not evaporated when making the cement so ...
1
vote
2answers
798 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 ...
1
vote
3answers
375 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 ...
3
votes
2answers
3k views

Crumbling basement walls and asbestos

I want to refinish my basement walls, as they look really bad. I tore down some wood paneling that was starting to warp, and behind that was some styrofoam insulation. Behind styrofoam is 3 mil ...
0
votes
1answer
424 views

Insulating the concrete attic with rockwool slabs

I want to insulate the attic with rockwool slabs in an unusual way. My house is old and we may have to rebuilt a new house in next 5 years, so I do not want to spend a lot of money on this. Attic / ...