Questions tagged [concrete]

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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anchoring a beam made from dimensional lumber to concrete piers

The rim joists of a shed will sit on two horizontal beams. The beams need to be secured to concrete piers with some kind of galvanized tie. Something like the one in the picture. The beams will be ...
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55 views

Concrete slab for a hot tub

I want to lay a 9 x 9 concrete slab for 125 psi hot tub how thick do I have to make it? And what kind of base should I use?
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Door threshold/sill from unfinished concrete garage floor

I have a detached garage with a bare, unfinished concrete slab. The side door has a step down to grade. The old threshold was so rotted when we moved in, I couldn't tell you much of anything about it. ...
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Self Leveler Over Thinset Over Concrete

In the kitchen, I've removed the tile and would like to install new tile. The floor still has much thinset over concrete. The concrete has hydronic lines for heated floors, has metal mesh on the ...
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38 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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Can this failing concrete patio be resurfaced and how?

Parts of my concrete patio are eroding from around the gravel on the surface. I think it was built in the 70s or 80s. Some parts of the patio are in great condition, others are very bad. Shown ...
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137 views

Gravel inside concrete form or form on top of gravel?

I am pouring a 5 inch concrete pad for a hot tub. I am planning on putting down 4 inches of compacted gravel under the concrete with rebar mesh in the center. My concrete pad will be 9 feet by 9 ...
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19 views

Stucco on concrete, order of operations

Our below-grade, painted poured concrete garage wall is showing some efflorescence and mild spalling (see image). I would like to cover it with one or two coats of stucco. I am made to understand I ...
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24 views

Home Bball court of concrete

I am looking to make a basketball court in my yard. Probably gonna be around 36’x25’. I think a concrete truck can bring about 10 yards of concrete. Would a 3.5” thick slab be strong enough? Do I need ...
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Preparing Broken Concrete Hearth Extension for Tile

I am planning to retile my fireplace hearth extension. As I was removing the old tile, the front edge of the concrete bed crumbled away. I presume this was because it was much thinner than the ...
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59 views

Pouring a concrete slab porch onto corrugated metal with no cross support

We are building a front porch that is approximately 8 feet off the ground. Our builder laid a piece of corrugated steel down that he supported on the front with the center block wall and brick and a ...
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23 views

How to install a concrete subfloor indoors?

The previous owners of our house enclosed a sunroom with stucco walls. The floor is old cobblestone and brick pavers with dirt underneath but they covered it with a cheap carpet. We're planning to ...
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45 views

My diamond cup wheel keeps spinning off when slowing down

I've run into a problem, I need to to remove some very stubborn thinset in my basement bathroom and also level some uneven concrete. I decided to try out the angle grinder method, I have a Bosch 1375A ...
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29 views

Basement Wall with Stucco/Concrete that needs to be removed

Just bought a 1960 house with unfinished portion of a basement that has had previous water intrusion and the crack has been injected. There are a few lingering cracks I want to deal with. Wall has ...
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21 views

How to frame an exterior wall against a concrete wall (Replacing garage door with person door)?

I'm replacing my daylight basement garage door with a person door which means framing inside a concrete opening. I know to use a pressure treated sill plate and sill gasket on the floor. But what ...
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Filling first concrete floor with Autoclaved aerated concrete (AAC) brick to 3 feet height is good?

First concrete floor is with 500 sq.ft. area. Out of this, 200 sq.ft. is in projected form for about 3 feet height. So, we are planning to fill in with AAC blocks up to 3 feet height for the rest of ...
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19 views

Process for patching stucco on bottom of wall?

There’s a big chunk of stucco missing on the bottom area of my exterior wall. It looks like the concrete foundation is exposed where the stucco is missing. Can you guys clue me in on what the process ...
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38 views

Large 16'×24' “He-Shed” Foundation Needs Fixing

I have a one year old 16×24 shed, 2×8×16 treated floor joists, 2×6 trusses, 2×4 stud walls, box soffits with vents, barn side panels, trim boards, shingled roof, gutters and downspouts, insulation, 3/...
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Foundation Crack and Severity

My wife and I recently completed a house inspection. A little on the house: it was built in the late ‘40s, the grade is excellent and has been built up around the entire house, the drain spouts do not ...
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63 views

Any problem pouring concrete in layers because of the capacity of the mixer

I'm making a 9' x 8' x 3" slab as part of a repair to my driveway. The old driveway concrete has been removed from this space. The new concrete will abut the original driveway on both sides. I'm ...
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26 views

How To Make Concrete Acid Stain For Floors

Recently I completed my concrete floor done inside my house. But that doesn't look good all the way. I don't want to do tiling, Because i feel that costly. So I planned to do acid staining so that ...
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2answers
189 views

Install wood panel in concrete ceiling

I would like to install a 30 x 60 inches wood panel (1 inch thick) in the ceiling. Not sure how much this wood panel alone would weight. Looking for suggestions of what kind of wood to use. The idea ...
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104 views

Fix garage door sitting on asphalt driveway

My garage doors sit on the asphalt driveway when closed and I'm not sure why this is. In the photo I attached you can see the line/indentation in the asphalt where the door sits. I'm not sure if the ...
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60 views

Proper base for stone walkways

The stone walkways around my house have all come apart to various degrees. I'd like to find a solution that will last for at least a few years. Is pouring a concrete base the right way to go? Or is ...
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72 views

Why is there a hole in my slab?

We had a leaky pipe burst over the weekend. It seems that it had been leaking (slowly) for some time, so there's some water damage to the wall where it was located. In order to clean it up, I removed ...
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180 views

How to glue HDPE plastic to concrete blocks?

I am using PL 500 to glue concrete bricks to each other. I need to line the back of the brick wall with some high-density polyethylene (HDPE) plastic tarps for water-proofing. The PL 500 says it will ...
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118 views

Replacing an exterior screen door footer threshold to close gap

So I'm repairing issues on a home that was damaged in a flood about 8 years ago. A contractor had done all the repairs after the flood but I've found lots of corners cut and shotty work. The door to ...
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21 views

Concrete over existing concrete in ground

I have a garden fence post which has some concrete on the post end in ground - had to push fence up as was tilting and now want to pour new concrete over the remaining old concrete in the ground - I ...
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115 views

Building Gate between house and garage with concrete slabs

We are fencing our backyard for the safety of our autistic son and what we have left is a gate between our house and the garage. They do not line up evenly and there are concrete slabs and rocks in ...
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22 views

What are thickness minimums and best type of concrete to fill floor dips?

I have a large room (~775 sq. ft.) with concrete floor. Prior owners had converted a garage to living space. I need to level the floor before laying laminate. For the final leveling, I'm planning ...
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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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Can the foundation for my garden shed be underground?

We are building a garden studio on a sloped ground. I am totally confused in regards to the concrete base. To have an even base we didn't have to dig out ground at the back on the building but the ...
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129 views

how can I kill Insects that are boring holes in concrete

I have insects that are boring holes in my driveway and garage floor. Are there any remedies that would kill Them?
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17 views

how to repair large crack going down length of garage?

My garage floor has a large crack in it that runs the entire length of the garage (approx. 20'). The crack is about 1/3 the way into the center of the garage. and a slab has sunken. my brother in law ...
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1k views

How to fix low spots in concrete slab

I have a couple exterior concrete slabs (walkways and pool deck) and although the slabs are slopped, in some area water is pooling. Looks like there are some low spots, creating 1/16" deep ...
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141 views

Can I build an extended shed base around an existing concrete base?

I recently bought a house that has a garden around 20ft wide. At the end of the garden is an old shed (6ft wide x 9ft long), about a ft away from the fence. Given it only takes up half the garden ...
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31 views

Level Concrete slabs

We bought our house and there is a shed in the yard that was 2 sheds right next to each other. It was recently torn down (not by me) and rebuilt. It's nice to have one single space the only problem is ...
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912 views

Lay a damp proof membrane followed by a self levelling compound

I have an uneven concrete floor inside. I need to put down a damp proof membrane and self levelling compound on top of that. My questions are: Is there any reason to use a roll of DPM vs a liquid one ...
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37 views

Concrete mix for outdoor countertop

I am building a brick BBQ, and I need to put a surface or "countertop" on which to lay fire bricks. I have seen this done in many videos. I will create a "shuttered" area, use ...
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17 views

I need to pour a concrete porch above the outside wall stucco screed level. What kind of barrier(s) do I need?

Pouring concrete porch against stucco wall above screed level. What kind of barrier(s) do I need?
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Patching a hole in an interior block wall

We have a bathroom that had the shower valves in an exterior block wall (OLD construction, lake cabin). The valves sprung a leak and the plumber had to knock out the block around the valves to get ...
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39 views

Power drill requirements for steel-reinforced concrete

We have the need for a new power drill (old 25+ year Bosch finally died) and I'm trying to determine the requirements for our situation. We are in a new build (European concrete) property with the ...
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29 views

Concrete table legs

the wife wants me to build a concrete table that is 10' long by 2.5' wide and 3" thick with and overall height of 30". She would like 6"x6" tubing for legs, so I was wondering how thick tubing I will ...
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37 views

Installing drywall in unfinished basement

I have an unfinished basement with concrete walls and soft insulation bolted to it. I’d like to install some drywall to
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41 views

Converting old mechanics garages grease pit into a storm shelter

We’re wanting to convert an old mechanics grease pit into a storm shelter. What would be the best way to do. We were thinking concrete for a slab and a wooden door for entrance. What is the best way ...
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34 views

What kind of caulk should I use to seal up spalling separating from steel porch ceiling

I'd like to do some temporary quick patches to prevent worsening rust and separation of spalling/stucco ceiling underneath a steel outdoor porch/deck. One on the first floor is kinda bad so will ...
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75 views

Installing Fake boxwood on concrete vinyl siding

We are trying to add boxwood on what I believe is concrete siding and I believe the only way to do so is by making a frame on the back wall that will have to be drilled into wall. Can I drill in the ...
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583 views

When would you use “hot mud” or setting joint compound for leveling concrete?

To my surprise (or ignorance) the bag of 'hot mud' I bought specifically says it can be used for : leveling interior above grade concrete When would this be an appropriate choice, and does it have ...
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3answers
435 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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Depth of hole when burying a 2 inch schedule 40 pole

How deep of a hole do I need, and how much concrete is needed for 21 foot tall 2 inch steel pipe schedule 40 pole that will be free standing? There will be a 19 foot tall antenna on top of it....