Questions tagged [cement]

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2answers
39 views

Pavers mortared to cement - how to grout joints

In my front yard I have a curved walkway made out of cement. The cement walkway is about 45 inches wide and sits on top of some compacted dirt. This past weekend I used some exterior thinset mortar (...
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0answers
36 views

What is the best proportion sand/cement to do pavers?

I want to make my own patio using pre-made molds. I would like to know if I can use only cement and sand. Will it be resistant or do I need to add aggregates. What should be the ratio?
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1answer
48 views

Will this arrangement of bricks be a good base for a concrete floor for a garden shed?

I am building a 6ft x 4ft garden shed which will have a concrete base. I've levelled some ground, built a frame, and made a floor out of old bricks. The ground is fairly clay-heavy. I've been ...
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1answer
31 views

Sealing 2-ft square hole in cement beneath tub

We are having our bathroom in the basement redone. Having a tub installed and the installer cut a 2 ft wide hole in the floor beneath the tub. after the tub is installed I was told that they no longer ...
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1answer
58 views

Should I be concerned about concrete/cement sealer fumes?

Full disclaimer, I don’t know anything construction really and this is not a project I am working on. Our rental unit is having the balcony redone right now, the flooring is pebbles embedded in cement/...
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2answers
107 views

How to remove bricks cemented on patio floor? Who do we hire? [closed]

My patio has some bricks cemented on top of older ones that I wish to remove. What kind of service do we need to hire for having the top bricks removed? Cement or mortar was used to set the bricks.
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1answer
46 views

Enclosing a breezeway between house and garage, (there is an existing roof )

I am in Calif. I would like to enclose my breezeway. At front of house would be solid, possibly a transom window at top. At back yard side of breezeway, a set of French doors with a vinyl window at ...
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2answers
140 views

My concrete is brittle like the density of a cookie

I've started making some small decorative concrete objects. Like trays, potters, table legs, etc. But recently my pours all go straight to the garbage bin. The problem (or the symptom) is that the ...
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1answer
51 views

How to prep and level part of my garage when there is a 6" difference in hight?

Specs: Garage floor is cement 24'x32' (except where the car will park.) far side is approximately 6"lower than the other. (~1° slope) large crack running the full length. a number of smaller ...
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0answers
51 views

Identifying magnesite flooring

TLDR: resistivity values and other identifying features for magensium oxychloride (Sorel) cement please. I have a 1950s council house where the ground floor is 2 types (one room dark brown, one room ...
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31 views

Is it ok to cover this cement patch with lime mortar?

I previously asked about a patch on a deep hole which has been giving off a strong odour. In the comments people mentioned that the cement had probably been mixed with other materials hence an ...
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2answers
77 views

How long for this cement smell to go?

Somebody recently came and filled this deep hole up with cement. It has been giving off a strong odor. Does cement typically smell and how long will it take for the smell to go mostly and eventually ...
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3answers
95 views

Cement vs. mortar for embedding stones in drive way

I will be scraping a dirt/gravel driveway down two inches and laying flat stones of various sizes and thicknesses. Need to have the tops at the same level, so some will need to have something ...
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0answers
33 views

Cracks in Cement Floor of Shed

My house has an attached garage similar to this: The garage has rooms above it, not sure if that's worth mentioning but I'll note it. Out the back of the garage where the house would normally end, it ...
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1answer
22 views

New basement - want to seal concrete

What would be the best product to seal a basement floor (brand new) that would not be slippery? How long should I wait before applying product?
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3answers
122 views

Will a cement mixer extend the working life of mortar?

I'm going to do some brickwork on my own. Last time it was quite the job to mix up mortar and get it laid before it started to go off (I know, working in pairs would be helpful!). I know I can ...
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1answer
55 views

I’m needing advice on making garden spheres [closed]

I am trying to make garden spheres. First attempt was concrete..no success too much aggregate need a smooth mix. 2nd attempt was cement, much smoother but doesn’t come in quickset so Bunnings staff ...
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2answers
74 views

Using white cement + water to mould a part [closed]

I'm trying to cast a small robotics part for a local college. Its small in size but needs to be heavy. So far I've created one with epoxy resin and it is okay. However, for the same size, I wanted ...
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0answers
16 views

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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0answers
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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3answers
1k views

How to replace loose 4x4 wood fence post with a steel post

The original 4x4 wood fence post for my home's side gate (that holds the catch part of a gate latch) is very loose and wobbles. The post is surrounded on 3 sides with my concrete walkway, and the 4th ...
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1answer
51 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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2answers
26 views

Securing brick, rock or pavers on artificial turf

I want to build a backyard putting green. The company I am going to buy the turf from (Garden-mark) says to lay the artificial grass over prepped ground as if laying pavers and secure the turf with ...
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1answer
238 views

Is it possible to use ABS cement to glue together THREADED ABS union fitting on P-trap for permanent connection?

Is it possible to use ABS cement for threaded ABS union fitting on P-trap for permanent connection? Or it won't be secure enough even if it glued together with cement? Or need to actually replace with ...
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1answer
30 views

Generic water-based polyurethane for concrete desk?

I recently made a desk with a concrete top. It was a little rough so I smoothed the top with a liquid mix of just cement and water. I'm now preparing to finish it. I have a pot of water-based ...
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0answers
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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2answers
246 views

Do I really need 140 lbs of cement for a 5“, 5' high vinyl fence post (31” in the ground)?

140 lbs Seems like a lot of cement, I was hoping to get by with just one 80# bag. I guess the hole would be 12" per auger rental advice. I Live in Montana, not a lot of moisture but ground freeze ...
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1answer
111 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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0answers
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
211 views

p-trap installation by newbie: cement cure time

I was installing a new p-trap under the kitchen sink: Attached tailpiece to the sink no problem. Then I prepared a short piece of 1 1/2" ABS pipe, put a plumbing cement on it, inserted one end ...
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1answer
73 views

How to prepare vertical brick surface so Portland cement based mixtures (concrete, mortar) will adhere properly?

I have a sub grade vertical stack of perforated brick (foundation) which I need to coat in a thick layer of mortar or concrete in order to fill gaps, creating a flat surface for subsequent painting/...
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1answer
50 views

Blending new concrete patch fix

I'm back for another concrete-related question: I previously asked Fixing broken piece of concrete and got great answers from folks here. I went to HD this weekend and finally patched up the broken ...
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1answer
81 views

Best practice for filling a pit in a concrete slab?

I have in my barn (concrete floor) a pit, of about 36" x 60" x 10" deep which was originally used to install some machinery by the previous owner. I have no use for it, and would rather ...
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1answer
29 views

Best way to fix tile

One of our old tiles suddenly feel off, the others seem ok. What's the best to fix back. I don't think I'll be able to get a new tile to match, and I don't think I can chisel the old mortar off ...
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1answer
77 views

Can an old-cement garage floor be painted in sections?

This question is related to our other question about relocation of our hot water heater. The current plan is to put the new water heater in the garage on the cement floor, so our concern is how to ...
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1answer
201 views

Does cement smell/gas off after a few hours?

I may use cement to fill some deep holes. I read that it cures in 30 days and will gas off for 30 days. This may however mean after a few hours it will mostly be cured and then it will gas off an ...
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1answer
148 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
1k 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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6answers
7k views

Contractor is installing a vinyl fence and posts but is not using any water with concrete. Is he doing it right?

I hired a reputable local company to install 6 foot vinyl fence around my yard. Salesman was telling me how they would be using cement to hold the post in place. To my surprise I see the workers use ...
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3answers
289 views

Cracks on second-story cement slab

I just purchased a 50-year-old condo. I pulled up the carpet and found the second floor to be a concrete slab. There are thin cracks in areas and a small pit in one area. What are my options for ...
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1answer
102 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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0answers
86 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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1answer
47 views

Proper deck post installation

I am having a deck installed and question how the posts are done. The deck is from 2 to 5 feet above ground on a slope. The holes were dug, probably 5 feet deep near the house then about 4 feet at ...
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0answers
25 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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0answers
37 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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4answers
167 views

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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2answers
331 views

How much cement and sand to buy for a garden edging project

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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1answer
69 views

Is it safe to pour concrete and use mortar in freezing weather?

I have a 1947 cape (Cape Cod style home) in New England. The basement egress walls which are made of unfilled cinder blocks and run parallel to the house under the porch are caving in. I thus have ...
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1answer
92 views

Why do you need to not use cement when laying block paving?

When you lay block paving surely you have to lay it with cement rather than just sand as it hold the block down securely. So why is this?
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1answer
2k views

Is it OK if my Durock cement board got wet?

I bought some cement board for the bathroom remodel and I stored it in the garage. No idea how but each sheet got a couple wet spots through them. I moved them inside to dry. After they dry are they ...