Concrete is composed of cement, aggregate (including crushed rock and sand) and water. In homes, it's frequently seen in the foundation, driveway, sidewalk, patio, and stone walls. Note that bricks use mortar in the joints, not concrete.

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How do I fix badly peeling and hairline fractures on indoor concrete walls?

How do I paint and fix peeling paint and hairline fractures on my indoor concrete (cinder block) walls? The popcorn ceiling is a mess too.
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2answers
150 views

Concrete foundation repair

My home was built in 1914 (Portland, Oregon). In 1948, the house was moved 200 feet to its current location. The 750 square foot house has a concrete basement with a concrete floor. The concrete ...
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2answers
323 views

Are there any advantages to using higher priced sealers?

I want to use a water based sealer on my pavers to bring out the color and also for some resistance against dirt and fading. I went to the store and saw sealers varying in price from about $11 per ...
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2answers
29 views

What type of subfloor should be used for Engineered hardwood flooring installed on grade concrete slab?

I would like to install engineered hardwood flooring over a concrete slab which is on grade. It is the first floor of the house, there is no basement and the house was built in the 1990's. I have seen ...
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2answers
133 views

How should I install flooring over fresh concrete?

I have fresh concrete poured in my basement. Planing to use Metrofloor Engage Select vinyl plank for most of the floor. Contemplating ceramic tile for the bathroom if vinyl is not good enough for ...
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2answers
82 views

Which type of mortar or cement to set electrical box?

I have cut out two holes for 4", metal electrical boxes to be set in to the exterior walls of an old block and stucco garage. I need to secure the boxes by setting them in either concrete or mortar, ...
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2answers
29 views

How do I remove adhesive from outdoor concrete deck that is textured?

I have an outdoor deck that had the old green carpet truf glued down. I removed it some time ago and want to remove the adhesive from the concrete, it has the brushed finish so the adhesive is in the ...
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2answers
82 views

Can I put gypsum and paint finish on top of a concrete fast set repair mortar?

I have a finished concert pillar in my living room that I need to be patched and pained. The pillar has final gypsum and paint on top of concrete. Since the concrete is chipped off I need to use a ...
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2answers
162 views

How do I insulate a strip foundation from below?

While building a strip foundation (a concrete wall starting several feet below ground) I have to insulate it from moisture because otherwise moisture will get into the foundation and into the ...
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2answers
339 views

Can I tile over Linoleum felt paper on a concrete slab?

I have a contractor coming in to tile my home. My floor is a post tension concrete slab, home is only 4 yrs old. The contractor said they could just tile right over the linoleum, but after reading ...
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2answers
52 views

How to mix concrete cement

How do i make sure i have the right air in concrete cement if i'm mixing at home.So that the concrete is stronger and won't crack in cold winters. I'm pouring a small walk way about a meter of ...
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1answer
23 views

Remove paint from concrete floor (indoors)

I'm trying to find a solution to prep my concrete floors (slab) for tile. A contractor I had hired to remodel my home did an outstanding painting job -- so well that he managed to cover most of my ...
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1answer
32 views

Where to seam concrete countertop?

I'm looking to do a concrete countertop and would like some advice on where to make the seams.I was thinking either where the red or the yellow lines are. Thanks, greg
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1answer
397 views

How should I build a base floor for a large summerhouse?

Hi my question has 2 parts about piles and creating a subfloor. I want to install a 4.8x4.8m (~16'x16') summerhouse; its existing floor is 24mm (~1") floor boards on 75x50mm (~"2x3") floor posts. I ...
2
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0answers
98 views

Can I add cement glue and sand into my concrete mix to repair my cenent garden statue?

I have a leopard concrete garden statue that was given to me by my neighbor that has a broken foot and log. I want to repair it and paint it. It also has been weather eroded so I need to recover it as ...
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0answers
189 views

How do I level a summerhouse concrete base that dips in the middle?

I laid a 4x3 metre concrete base for my summerhouse/office thing. The corners are all level and so the summerhouse sits fine, but it dips in between and so the load bearing battens aren't taking any ...
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0answers
17 views

Repairing concrete block on inner part of basement

I have had water seepage into my basement through concrete block for many years. The exterior part of the block is covered by a deck and patio and is not easy to get to. I've mitigated a lot of the ...
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0answers
49 views

Installing an 18kg (40lb) projector screen onto a concrete ceiling

I have a large projection screen that I need to install into a (seemingly) pretty stable concrete ceiling -- at least that's what I assume it is -- it sounds very solid when hit with a hammer, ...
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0answers
211 views

How can I fix these cracks in my concrete/plaster wall apartment in Paris?

I'm used to working on sheetrock in the U.S. but I now live in France. In my old apartment in Paris, the walls seem to be plaster but could be concrete. It is soft enough to make divots if I dig in my ...
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0answers
65 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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0answers
49 views

Repairing/patching concrete foundation of house

What's the best (or maybe easiest and most affordable would be more accurate) route to patch the concrete of our house foundation? It's kind of crumbling in places and needs a facelift. Ideas/options? ...
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0answers
87 views

Should a concrete pool look like this after an acid wash?

I'd like to redo after the contractor who did an acid wash of my pool: But before I start, I'd like to understand (since I have never seen the pool acid washed before): is that what "the product" ...
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0answers
125 views

Is this vertical gap in the concrete block foundation something to worry about?

I'm looking at a home that has a vertical gap or crack running the height of the exposed concrete block foundation. The crack is near the center of the home, about a foot to the right of the concrete ...
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0answers
132 views

How can I edge concrete without an edge trowel?

How can I make a concrete floor (also using dry shake color hardener) with a proper edge, without using an edge trowel? In Brazil I cannot find an edge trowel anywhere, so I would like to know if ...
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0answers
38 views

Latex paint over concrete primer

I have put concrete primer on my poured concrete walls in my basement. I have enough of construction latex paint primer to go over it all again. Is it okay to use on top of the concrete primer and ...
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0answers
173 views

Can I repair the cracks between the bricks in my fireplace?

The bricks surrounding my fireplace have cracks between them. It's as if the thermal expansion/contraction has eroded the mortor between the bricks. I have had some serious fires in there and haven't ...
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0answers
105 views

Repairing exterior cement wall

I have an exterior wall on one side of a brick building that appears to be stucco or cement. Some of it is starting to come off in sheets. Basically, there is one layer, maybe the thickness of orange ...
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0answers
105 views

Applying thinset to concrete floor

I am planning to install ceramic tiles with a "Warmup" heating element beneath them. My first step is to install 1/4" insulation boards on the concrete floor using non-modified thin-set. The floor ...
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0answers
396 views

How do I repair cracks in the concrete pillars supporting my patio roof?

I have two round concrete pillars that support my patio roof. I have noticed that they have cracks even though they are new. I suspect the filling of mortar and bricks inside those pillars was not ...
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0answers
238 views

How can I tell if I've got Cool Deck installed?

I have coping around my pool that I thought was Cool Deck. When I started researching "How to repair cool deck", I noticed I do not have the uneven (up and down) pattern) my coping is smooth and ...
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0answers
10 views

concrete stain protection

I want to make a shelf (floor standing) out of concrete, to surround our sofa, so that we can put cups/win glasses on it, and a wine rack underneath. I have done some experiments with the concrete, ...
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0answers
26 views

How can I figure out how much load a concretet slab can take?

I have a sun room that has existed for around 12 years. It is on a concrete slab, with two retaining walls and a 2x4 wall structure for holding screens. I want to convert it to a enclosed room with ...
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46 views

Self levelling concrete as primary floor?

My kitchen currently has a concrete floor with a bit of underlay and then some funky blue vinyl on top of that. A new kitchen is going in Q1 this year and I'd quite like the look of concrete floors. ...
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0answers
30 views

concrete and slate roof has started to leak

I have a house with a concrete roof with slates stuck on it (probably using gypsum). The roof is pitched, I would guess somewhere around 20 degrees. It has started to leak in a few locations. Can ...
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0answers
37 views

Extending the back of our house

We are going to be replacing our entire roof with a metal roof this summer. I was wondering if it would be possible to extend the back of our house before we put on the new roof. We would have to pour ...
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0answers
35 views

Concrete shows under hearth, can I paint?

My hearth has been laid on concrete which stands proud of the floor. The hearth is black and the concrete has a black cement dye in it but looks grey next to the black of the hearth. It has a fairly ...
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0answers
65 views

Fill / waterproof large crack / gap in concrete garage floor

Moved into this house about two years ago. In very heavy rain, the backyard floods due to inadequate drainage, and it runs into the garage, under the wall. I used a Concrete Crack Filler ...
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0answers
35 views

How can I repair a crack in my foundation that is leaking?

We need help and we don't know who to contact and how to fix the problem. We have a crack in the foundation. Pavers on one side, crack where the siding of the house is and then water is coming from ...
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0answers
53 views

Which should I do first? replacing furnace or resurfacing concrete floor?

I'm going to get two things done in my basement soon (by hiring professionals), but I'm wondering what the right order of operations is. One task is to replace the gas furnace that sits near the ...
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0answers
91 views

How to form curved concrete seat for bench with back?

The contractor seems very unsure of procedure. He has put some very thin plastic around the front edge of the curve, holding it in place with wide black plastic tape. It is about 1.5 inches tall. ...
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0answers
67 views

How to install 4'x9' fiber concrete siding to replace wood siding

I acquired 4x9 panels of fiber concrete siding. I want to replace 20 year old 4x9 sheets of wood siding. I read you need good backing under the concrete panels. What is the best practice for ...
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0answers
28 views

How can I prevent condensation under vapor barrier on a 1st floor room with flooring?

We bought last year an apartment of the 1st floor. The building has garages and utility rooms right under our level and the two bedrooms face north. One of the bedrooms has actually an external wall ...
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0answers
35 views

How do I seal an existing concrete floor before patching it?

We are patching an old concrete slab and we are having a problem with the glue or concrete seeping through small cracks onto the floor below. Is there something I can seal it with before we pour?
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0answers
67 views

Inner walls of house are all concrete block…?

I bought this house 9 years ago, it was built in 1954. A few years after I had gotten it, I decided to get creative and pull down some of the paneling on a wall that separates the kitchen from the ...
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0answers
46 views

Treating a crack in a concrete patio before resurfacing

I am resurfacing a covered outdoor concrete patio. The original slab has a crack in it due to some heave. I am not particularly worried about this crack, however. The soil below is hard clay, and the ...
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0answers
71 views

How to caulk vertical seams of concrete step risers?

I am recaulking some concrete steps, and the concrete/masonry caulk I bought says it's self leveling and for horizontal surfaces only. Are there caulks that are meant for concrete but will adhere ...
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0answers
173 views

Cinder Blocks crumbling

As it is evident from the pictures, cinder blocks on the bottom of the wall are disintegrating. I have tried painting with special paint but it continues to happen. How do I replace them? Why is ...
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0answers
92 views

How can I fix an unlevel bathroom concrete floor?

In our very small bathroom (in a slab home) we have an uneven concrete floor. There is a ⅝" inch gap between the baseboard and vinyl that travels about 15½" along the baseboard. (The ...
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0answers
277 views

How to hang shelf on 2cm thin wall?

I would like to somehow saw out a wood board that fits into the corner as seen on the picture below. The problem is that both walls are only 2cm thin. The shelf needs to be able to hold a pair of ...