Questions tagged [cement]

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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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92 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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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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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" ...
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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 ...
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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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77 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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355 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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73 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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424 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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1answer
51 views

Materials for building inexpensive light-weight large planter?

I've wanted to build a few large planters for a while now, and I've considered using concrete, wood, etc. I don't know what other cheap material to use. Initially, I wanted to make them out of pre-...
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2answers
28 views

Thinnest screed over the water heating floor

I installed a water heating floor system with 17 mm pipes and studded panels. This is how a studded panel with a pipe looks like: It has 52 mm height (the polystyrene has 30 mm). Now I want to add ...
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Sealant around flue liner

As you can see some mortar has chipped away/fallen off from where the flue liner for our boiler meets the basement wall. Need to re-patch this - is it a straightforward sand and cement mix to be used ...
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1answer
74 views

How to fix if cement board in shower is not flush with the shower pan and also about an inch gap

so the cement board and tub flange are not flush the flange sticks out a quarter to half inch on shower wall and at least an inch above it
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grinding down garage floor

I have to grind down my garage floor. Can I use a hand held grinder with a diamond blade? I saw a grinder for $80.00, 11 amps 4 1/2, I think might work. I don't know where to rent one.
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73 views

How to remove tile with mesh embedded in cement bed?

I am doing a bathroom remodel on a late '60s house. The bathroom tile is set on a roughly 1.5" cement bed with embedded wire mesh. I have removed a small portion with a rotary hammer with a pointed ...
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482 views

concrete: remove chalk line stain and clean concrete residue

I hired a cut rate concrete contractor to redo my driveway because all the bigger firms were too busy. He did a decent job, but he did a couple things that I now need to fix since the chances of ...
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35 views

What type of paint do you use for a concrete retaining wall to work with hydrostatic pressure?

I know we are not supposed to recommend brands because it is against the rules. But I am trying to paint some outdoor cement stairs that tie into a retaining wall that is roughly 4ft tall to as high ...
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40 views

moisture barrier for an indoor swimming pool

What is the proper way to install wall boards with a water barrier? I am concerned about moisture escaping into walls. I'm istalling an indoor swimming pool and am concerned about moisture.
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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'...
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822 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 ...
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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 ...