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.
2,183
questions
0
votes
1
answer
35
views
bathroom concrete floor patch type?
This old floor has some spalling but main concern is an area that looks like someone started jack hammering for about 3 feet long, 4 inches wide, uneven depth (max depth around 2").
Looking for ...
CommunityBot
- 1
0
votes
1
answer
85
views
How would you fill a gap between the foundation wall and sidewalk?
How would you fill this gap, this spot in my driveway gets a lot of water. My only concern is that caulk will not be able to fill that spot and the other concern is that the hydraulic cement will be ...
CommunityBot
- 1
0
votes
2
answers
43
views
How to go about furring irregular concrete wall
I have irregular Concrete stem walls that I would like to fur out for paneling. The walls vary in depth vertically and horizontally. Conceptually, I understand it is as simple as finding the furthest ...
- 144k
0
votes
1
answer
33
views
clear coat cement sealer for basement
We are going for an "unfinished" basement look. The picture doesn't do it justice but our cement is in really good condition even though the home is 50 yrs old. The goal is to clear ...
- 473
0
votes
2
answers
64
views
How to stop or redirect water running across concrete floor?
I have a wall in my basement that is a giant piece of rock, the rest of the foundation was built around it. The rock has suddenly sprung 100 leaks, which I have tried to seal with hydraulic cement but ...
- 32k
0
votes
0
answers
30
views
Does spackle adequately protect exposed concrete reinforcing steel? [closed]
I live where the buildings are all made of reinforced concrete. In my apartment, we just had a window replaced (a big salon window) and the workers were a bit brute-ish and a big hunk of concrete ...
- 144k
0
votes
3
answers
30
views
Ac drain pipe leaking
AC drain is in a horrible position - it's leaking on my concrete. will it cause damage?
I live in hot area. Any ideas to fix?
I did a bandage job. AC guy wanted to get a pump from furnace through ...
- 1
0
votes
1
answer
34
views
Old deck footings not aligned with posts. Replace footings or extend them?
I have a 12' x 8' deck about 2' off the ground. One side is attached to the house with a ledger board that is in good shape. However, at the other end of the deck the posts are rotting at the ground. ...
- 8,851
0
votes
1
answer
82
views
Is this thick mortar? Can i patch it and tile over it?
This was what was under the tile in my bathroom. Probably from the 50s. I think it is thick mortar? It is crumbly in places. I don't want to demo the entire thing, I'd have to hire someone to do it. ...
CommunityBot
- 1
0
votes
1
answer
30
views
How should I direct water away from my foundation and doorway? (Brick patio on concrete slab)
I have a brick patio laid on top of a concrete slab with a generous slope toward my foundation and garage entrance. Water routinely makes its way under the door in the garage, and during heavy rain I ...
- 12.8k
2
votes
1
answer
93
views
Shelves in concrete+drywall
Before I absolutely wreck a wall at work I need some insight:
I’m familiar with the process/drill/bits/anchors associated with installing shelves in concrete so I don’t have questions about that part, ...
- 1,874
0
votes
1
answer
36
views
Will a MS Polymer Sealant bond to both PPE (polyphenylene ether) plastic and concrete to create a submersible watertight seat?
I'm researching a waterproof sealant that that will bond PPE (polyphenylene ether) plastic to concrete. I embedded a PPE channel drain section in concrete for use as an intake for a pond pump (...
CommunityBot
- 1
0
votes
1
answer
43
views
Demolishing Concrete Patio that Protects Foundation and Door Threshold
Past questions have considered the general case of removing a patio that adjoins to a foundation, but I was hoping to show a few photos of my job and see if any specific advice applies here. My house ...
- 63
5
votes
3
answers
31k
views
Howto convert old basement slab into finished concrete floor?
Doing a complete remodel, after Boulder flooding, of my basement. After demoing and floodcutting, all that's left is framing and concrete slab. I'd like to turn this into a nice concrete finished ...
- 36
4
votes
3
answers
17k
views
How to lift/raise/repair a segment of concrete slab?
I have an 8-year old concrete slab around my pool. One slab has sunk by about 2 inches on the short side. The slab measures about 6 feet by 3 feet by 4 inches. It rests against the pool structure on ...
3
votes
2
answers
705
views
concrete slab for shed base
I am about to order 12x20 shed kit and need to start building concrete slab. Can I throw 3inch gravel and 2inch concrete on top of the gravel? Or this wouldn't last long? I can pour all concrete but ...
- 1
0
votes
1
answer
47
views
What kind of concrete repair material should I use to fix this peeling patch in a sloped drain that is puddling water?
How should I fix this drain slope that was patched and now has a high spot, making the water pool and soak under the peeling patch instead of making it to the drain? I'm a DIY'er so would be looking ...
- 23.2k
0
votes
1
answer
158
views
Stained concrete
I went to change out my doormat (those coconut-husk fiber ones) and there was a stain and it's sticky. The stain is not size of the doormat, it looks like someone spilled a drink in front of our door. ...
CommunityBot
- 1
8
votes
2
answers
41k
views
Pouring concrete for fence posts in heavy rain
My contractor just poured the concrete and set the posts for a new fence we are getting and much of the work was done in the pouring rain. Will this hurt the concrete and effect how it holds up down ...
0
votes
0
answers
13
views
How can I seal between steel framing and a wavy floor slab?
My shop leaks in multiple places because the concrete guy did a horrible job so the steel foundation of the shop is not airtight sealed to the concrete. Trying to figure out the best material to use ...
- 144k
3
votes
1
answer
18k
views
How can I repair deteriorating concrete walls?
Our garage is about 80 years old and made of steel-reinforced concrete. The inspector deemed it structurally sound, but cosmetically the interior is a mess.
The concrete has come loose (it is old ...
CommunityBot
- 1
0
votes
0
answers
60
views
Glass strips on concrete floor is breaking
I have concrete floor in old home, where glass strips are used to partition the concrete floor like this Glass Strip
These strips are breaking from top and I am afraid might pinch foot some time.
...
- 1
0
votes
0
answers
31
views
Using concrete as an edging restraint for a paver patio
I've been seeing a lot of references to using concrete as an edge restraint for pavers. I am more familiar with the plastic edge restraints. With the plastic type, you install them before you do the ...
- 193
1
vote
2
answers
77
views
How to fix this outlet stub up through concrete?
How could we fix this situation?
So a contractor laid a 2" conduit for electrical underneath and stubbed it up. This location is supposed to be for an in-floor plug. When another contractor came ...
- 23.2k
1
vote
0
answers
26
views
Foundations/ footings
Hi I have engaged a builder to pour the foundation for a shed/ man cave. I’ve asked for it to be 600mm deep, I’ve returned home to find that they have poured it at around 400mm and the rebar level ...
- 11
1
vote
2
answers
70
views
Non-slip grip tape not lasting on worn outdoor concrete pathway. Non-slip paint?
We have a portion of very smooth and worn outdoor patio area concrete that, over 52 years, has become like a polished surface and now is extremely slippery in the rain/when wet, a hazard for my ...
- 11
3
votes
2
answers
3k
views
Waterproofing a concrete basement wall with a staircase in the way?
I've been in my 1926 house for just over a year, and earlier this week I noticed water seeping in through the concrete wall behind my basement staircase after some intense rain. It was a small but ...
- 1,076
2
votes
1
answer
40
views
How should I repair a crack on my garage slab at the overhead door line?
We recently bought a house with a garage attached to it. Like many garage concrete slabs, it is cracked, just outside of the garage door (see picture).
Since the area sees a lot of car/motorcycle ...
- 144k
4
votes
1
answer
6k
views
What are the differences between trowels for concrete and plaster? Are they interchangeable?
I have some paving steps to lay in concrete, and will buy a trowel for smoothing them off.
There's an enormous range of trowels/floats available, with almost identical ones for plastering and for ...
- 36
0
votes
1
answer
27
views
How to repair patio with missing edge on an incline
I bought a house with a patio that is surrounded by a bed of stones which are held in by by a treated wood bar. On the other side of the wood is a 8 inch drop to a vegetable garden. There's a french ...
CommunityBot
- 1
4
votes
1
answer
2k
views
22kw generator mounting pad on slope
I need to build a pad for a 22kW generator I am installing for my house. The image shows the situation. This generator is quite heavy. I plan to pour a rebar reinforced 6" pad for it.
My ...
1
vote
1
answer
174
views
Do I need to remove mold stains before applying foundation waterproofer?
We moved in to a house two years ago that had a crawl space dug out and turned into an unfinished basement area several years prior (>10?). I was hoping to turn it into a home brewing room (...
CommunityBot
- 1
3
votes
1
answer
268
views
Reinforcing concrete wall of outdoor hot tub?
I just bought a home with a hot tub/pool in the backyard, and the hot tub is slightly elevated over the pool, and designed so that water will flow over the side of the tub and into the pool below (...
CommunityBot
- 1
2
votes
2
answers
6k
views
Okay to seal the gap between concrete foundation and sill plates from the outside using caulk or spray foam?
My house doesn't have any gasket between the sill plates and the concrete foundation, so there's some gap between the two (see red circle on the photo, which was taken from the ground facing up). I ...
- 33
0
votes
1
answer
2k
views
Filling expansion joints before self-leveling concrete? [duplicate]
I am adding self-leveling concrete to my basement flooring. I have expansion joints which are currently filled with a joint compound. How would I fill in the expansion joints so that I can cover the ...
- 111
1
vote
1
answer
61
views
Type of Paint for concrete shed?
I have tried power washing this shed but it still looks dirty. I would like to paint it white. Any ideas what kind of paint I should purchase?
- 144k
0
votes
1
answer
22
views
Foundation under brick corner is moving/detached
Context: I'm a relatively new homeowner living in a 1958 brich house in Canada (think winters). FWIW, my house is old, has very few water holes and the face where the corner broke off is where the ...
CommunityBot
- 1
0
votes
1
answer
84
views
How can I construct an outdoor concrete pad and retaining wall that will also work as a basement floor and foundation wall?
I know at least a few ways to pour a concrete pad for long term outdoor use. And I can build a retaining wall, poured or from cinder blocks (or from timber, but that's less relevant here).
I am less ...
CommunityBot
- 1
3
votes
4
answers
11k
views
Which is better/safer for cutting concrete slab, hammer drill or angle grinder?
I have to cut a 100x500 mm hole in a concrete slab that is about 80-100 mm thick. I think that I have two options to do that:
1) 9" angle grinder with segmented diamond disc: cut the long sides, then ...
0
votes
0
answers
24
views
Product to fill hole in brick foundation [duplicate]
Old service entrance has started to fall apart and insects have moved it. The hole is plugged with concrete on the inside.Once they're removed, how best should I fill this?
The mortar around it is ...
- 1,231
0
votes
2
answers
87
views
Air conditioner condenser pad over rocky, uneven ground
Wanting to pour a small pad for a side discharge AC compressor under my deck. The ground as shown is never level and hard rock. Unit is 200 lbs and I need this pad to last 10-12 years.
I am ...
- 32k
0
votes
0
answers
41
views
Gravel under concrete in Second Floor Bathroom
I'm having my bathroom redone on the second floor of the house and the contractor replaced the concrete slab under the tiles with concrete over gravel. On the second floor? Is that to code? Is that ...
1
vote
1
answer
187
views
How to repair these concrete steps?
How would I go about repairing this gap in my front porch steps? Link: front steps
They are about 20 years old. All the houses on my street have the same steps and I can see the same issue appearing ...
- 11
0
votes
2
answers
46
views
Adhering paving stones to wet concrete basement floor to divert water seepage direct to sump pit
Basically looking for advice on adhering pavers 2x4x8" to concrete that is permanently wet due to water flowing through basement stone wall. Idea is to make a moat that funnels the water right to ...
- 223k
4
votes
1
answer
532
views
How should I repair this wall and siding damage from old conduit?
An electrician came and upgraded our service a few months ago. You can see the new meter and thick service conduits in the photo.
However, they left holes where the previous conduit was, as shown in ...
- 2,899
2
votes
4
answers
39k
views
Resurface exposed aggregate concrete patio
Is it possible to resurface an exposed aggregate concrete patio? My current patio surface is about 20 years old, and the aggregate has deteriorated a bit and is pretty ugly looking and painful to walk ...
- 1
1
vote
1
answer
19
views
Repairing base for exterior slider
Any suggestions on how to repair this? Someone my daughter hired installed a glass slider straight on to this concrete. It was obvious the installation was subpar so we removed it and found just ...
CommunityBot
- 1
0
votes
1
answer
237
views
What should I do about crack in concrete subfloor? A foundation contractor has already stabilized the foundation
About two years ago I noticed some cracks in the drywall, so we had a foundation contractor come out and stabilize our foundation. They removed all the trees close to the house, added gutters and sump ...
CommunityBot
- 1
2
votes
1
answer
85
views
How to repair small concrete retaining wall
I have a small retaining wall between the walk at the back of the house, and a flower bed. The wall also support small pillars for a roof overhang.
There is a break in the wall, that over the years ...
CommunityBot
- 1
0
votes
0
answers
32
views
Removing self-leveling concrete from wooden subfloor?
My partner and I are replacing the carpet in my office with vinyl(w/ cork underlayment) flooring. After tearing up the carpet we noticed the wooden subfloor in one corner was messed up. It's like the ...
