Questions tagged [cement]

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Can i use non-tiled cement board -floor & shower shower stall?

Ground up bathroom build on (composite board) deck. I want an industrial look/not using tile. Some leakage is OK as it will be going through deck onto soil but would like to avoid mold. If I can keep ...
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1answer
55 views

Will surface scuffs be a long-term issue in a new concrete walkway?

I'm probably being paranoid but would like to get some expert opinions as this is my first time dealing with concrete. I had a concrete path laid in the garden, around 80-100mm thick. It was laid and ...
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18 views

How to add small ramp or level painted concrete?

I have a small patio (10'x6') with painted (oil based) concrete. It has a slightly uneven slope resulting in standing water with heavy rain. I would like to add a small ramp/slope to the top of the ...
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1answer
74 views

How to repair cement/flowable-fill slab cracks

I have a 5o yr old condo. The second floor is a cement or flowable-fill slab. There are cracks in areas and a pit in one area. Can I repair the pit and cracks or do I need to tear it all out? [![...
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2answers
168 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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263 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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28 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
2k 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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639 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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70 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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80 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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400 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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81 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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466 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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15 views

Light Frame Structure Ceramic Floor Installation

I hired a contractor who made a big mistake. He installed a ceramic floor onto 1"inch cement board (that is screw into welded beam constructed subfloor). He did not use thin set or tape over the ...
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1answer
38 views

Exterior Cement Patio poured all the way to exterior brick of the house. Water proofing options?

My house was built in 1955, at some point (unknown) a cement patio was poured beside the house. The cement was poured all the way to the brick work of the house (No visible gap or nor is there a good ...
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30 views

Concrete for making concrete molds

I am trying to make some concrete items such as trays, vases, bowls etc. Can anyone please advise on recipes/ratios for this? I would like to make these in white, black and grey and want a smooth ...
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1answer
50 views

Can you use cement to fill a boiler flue hole?

I am having the same problem as this question: How do I fill a hole surrounding a boiler flue? I notice the answer doesn't mention cement but other products which may have been due to fire safety ...
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4answers
236 views

Pouring concrete over rocks

Need a bit of guidance here, I have tough yard and my contractors are going to pour concrete over some large boulders and filled in the remaining area with parts of other boulders (6in to 1 foot). ...
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41 views

Garden wall pointing / capping advice needed

I’m hoping to get some advice on a project I’m planning. I bought a house last year that has a 2 foot retaining wall between the decking and the lawn. It’s a red brick wall and looks to be in pretty ...
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23 views

How should I waterproof/seal a large hole in my basement wall?

There is a small 8"x12" plexiglass window in my basement that I want to seal/waterproof and then cover with soil. On the exterior of the house the window is at the base of a negative slope in the yard,...
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36 views

Shower curb: Fill in holes in cement blocks before tiling?

I am putting a curb in my shower using small cinder blocks. Do I need to fill the holes with cement before tiling?
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1answer
105 views

How much cement and sand to buy - instaling garden edging

I am planning to lay down edging around the lawn in my garden - leaving about 750 mm wide flower beds along the fence. All in all, I need to lay down about 23 meters of edging slabs - it will be ...
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26 views

How do I know what the cement or stucco finish on my house is?

Just purchased a house (first time homeowner) and I'm realizing there is of course a lot I don't know about it. I'm trying to hang a mailbox on what I think is a stucco wall, but apparently there are ...
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2answers
51 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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30 views

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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183 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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1k views

How can I 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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56 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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46 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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2k 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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1k 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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99 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 ...