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Questions tagged [concrete-block]

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5
votes
4answers
28k views

Can I install windows into a concrete rough opening without wood buck?

I recently cut two holes in my foundation and installed new windows. I lined my hole with 2x8 PT wood bucks that I attached to the masonry with Tapcon screws. Then I attached my window nailing flange ...
5
votes
2answers
10k views

How do you secure electrical outlets in a concrete block wall?

I have an old home that has several outlets in the exterior wall. These outlets are not secured to the block, they just dangle in the opening and are only secure (or appear to be firmly in place) due ...
5
votes
1answer
4k views

How do I properly renovate the concrete floor of my balcony?

I live in an apartment that can be characterized as an old soviet-era, 5-story, multi-apartment, concrete block-based building. That means, everything was built by "stroybat" a soviet-time army ...
4
votes
6answers
2k views

What is the cheapest way to brighten a basement workshop?

I have a bare concrete block unfinished basement. I have zero moisture problems (it's a 2007 construction with exterior waterproofing applied to the concrete along with a buried perimeter drain). ...
4
votes
2answers
290 views

What is cinderblock?

I live in the UK and have never heard of cinderblock, what is it?
4
votes
1answer
7k views

How should I build an exterior door landing pad?

I've got a building with several exterior doors (all opening inward). The slab and walk-up is about 18+" from the ground. Code requires that I have a 36"x36" landing pad outside each exterior door. ...
3
votes
3answers
3k views

Should a 3'-4' retaining wall have interlocking blocks?

I'm building a 3'-4' retaining wall in my backyard and I'm in the process of choosing block. One of the blocks I like isn't engineered with any kind of lip or interlocking feature. Is this necessary ...
3
votes
4answers
10k views

Can I skim coat a painted interior concrete block wall? If so, with what & how?

Can I skim coat a painted interior concrete block wall? If so: What can I use to prepare the wall? What material should I use (joint compound, plaster, other)? All DIY so simpler the better.
3
votes
1answer
8k views

What compound should I use to fill drilled holes in cinder block?

I have some holes drilled previously on my house that I would like to fill in. Do they make a liquid concrete in a tube compound that I can squeeze into the holes to fill them in and keep wasps out? ...
3
votes
1answer
6k views

What type of screws and anchors are used for concrete?

I have cinder block walls along one side of the garage and hang a lot of 'tool storage' hangers and such. Often what I buy comes with screws and anchors so I use that but I have some hangers I just ...
3
votes
5answers
15k views

How should I encapsulate a basement wall with chipping paint on a porous surface?

I have a basement wall with several layers of chipping paint. I can't say officially, but I'm pretty certain the bottom layer (dark green in the photos) is lead-based, while the upper layers are not. ...
3
votes
1answer
2k views

How can you attach those stair steps to cement blocks?

My wife asked me if these kind of stairs could be done in our new house: The house I'm building is made of concrete blocks (which would be left unfinished in the first floor). Now, is there a safe ...
3
votes
3answers
4k views

Repair cracks in concrete block wall that's no longer moving

I'm fixing up my detached garage built in the early 1900's. At some point there was some movement in the walls (not the slab, the walls are built next to the slab). There doesn't seem to be any more ...
3
votes
2answers
20k views

How can I prevent this concrete block wall from falling over?

I have a concrete wall that separates my backyard with my neighbor’s. It has been there for decades (at the very least 30 years). I have a slope of about 30 degrees and have noticed that the wall is ...
3
votes
1answer
276 views

How to wall-mount to a “resilient channel” wall?

first SE post! MY QUESTION: How do I safely attach an articulating mount (tilt/pan) for a 75" LCD TV to a "sound deadening" wall that uses resilient channels? Thanks to the miracle of the ...
3
votes
1answer
318 views

Water on block foundation wall

I have water on the top 4 feet of my basement foundation wall. This goes around almost the entire perimeter of the basement. The bottom 4 feet of blocks are dry. Any ideas the cause? Can someone ...
2
votes
2answers
5k views

How can I remove a parking block from my garage?

So, builders have this thing, for some reason, of installing cement parking blocks a few feet in front of the hot water heater in the garage. I've lived at plenty of places without those and managed ...
2
votes
1answer
614 views

Does anyone know if concrete blocks with half-moon tops are made?

I'm planning to finish a concrete block fence and would like to cap it with a rounded half-moon style block for aesthetics (the whole thing will be covered with surface-bonding cement for an adobe-ish ...
2
votes
1answer
4k views

What causes wet/damp concrete blocks in a newly built shed?

Over three weeks ago, we had building contractors in to build a turf shed and today there was heavy rainfall all day and we noticed wet/dampness on the inside of the blocks. There are two coats of ...
2
votes
1answer
948 views

destroy a wall that is useless

I'm new to building or destroying things in that occasion. I have a wall that is not supporting the roof or any other part of the house. Removing that wall will help me build an extension of a room ...
2
votes
1answer
4k views

“Draining” concrete blocks?

We've recently had exterior waterproofing applied our house. In the process, we removed an old cold room that was underneath our porch. They walled up the entrance to the old cold room, and then ...
2
votes
1answer
2k views

Maximum retaining wall height

Some retaining walls from the home improvement store stated that Maximum Wall Height is 2 feet. For example, Tranquil Olde Manor Concrete Retaining Wall Block from Lowes. My question is that why there ...
2
votes
1answer
2k views

How to lay concrete block without squishing all the mortar?

I'm laying a small retaining wall for a garden and I'm having a lot if trouble getting a proper mortar joint. If it is on the soft side it is squished out of the joint with the weight of the block. ...
2
votes
1answer
749 views

How can I paint concrete blocks without trapping moisture?

I have a shed/laundry that is a separate building from my house. It's made of concrete blocks sitting on top of a poured concrete slab. Currently the inside is bare, which is dark and drab. I want to ...
2
votes
1answer
220 views

Load considerations on framing members that are only attached to concrete?

I am building out a workshop space in my basement, and want to put up framing on the walls, as shown here: Specifically the left wall and the far wall, both of which have a lip. The foundation blocks ...
2
votes
1answer
10k views

How wide does a 6x6 concrete post footing needs to be?

Need to attach 6x6x8 posts for a free-standing pergola - I'll use Strong-Tie anchors attached to the concrete footing. The hole for the footing will reach well below the freezing line, but how wide ...
2
votes
1answer
812 views

How to mitigate and/or repair concrete frets (slab edge wetting)

A building engineer made a report of problems with our property. One issue raised was "slab edge wetting" by which the building engineer meant that the concrete slab on which the house is built is ...
1
vote
2answers
114 views

How do I build a fence with zero experience?

I've never built a fence or have never done any outdoor construction. I'm pretty handy and do most of my interior maintenance. I have a total of 780 feet where I need to put up a fence. I'm still ...
1
vote
2answers
781 views

Building a thick concrete pad

Concrete newbie here. I am building a concrete pad for an A/C unit in an already excavated area of the yard (new plant bed). The excavated area is around 8" deep. I want to build a 4'x4'x16" concrete ...
1
vote
1answer
225 views

How to minimise the amount of concrete needed for a shed foundation?

I’m looking to build a 6m by 3m shed in the back garden. It will be jammed in between 3 neighbours’ gardens, so it will have to be less than 2.5m high. Roof will most likely be a low grade pitch with ...
1
vote
2answers
57 views

Floating desk on concrete block wall

I have a concrete block wall with dot and dab plasterboard. I am looking to attach a wall to wall floating desk to it. I appreciate a number of questions relating to floating desks have been asked ...
1
vote
2answers
60 views

Lard as release agent?

So I’m learning how to make concrete pavers with this youtube video. He mentions that he uses lard as a release agent, so he brushes that into the mold. He also suggests cooking oil or motor oil for ...
1
vote
1answer
371 views

What causes air voids in concrete?

Really have no idea on what causing concrete to have air voids in it. Is it causes by evaporation of water during the hydration process?
1
vote
1answer
804 views

Can a concrete block be split the same way you cut stone?

I just bought a house with a large retaining wall built out of stackable concrete blocks. At one intersection there's an extra block that sticks out awkwardly. If I score a line with a chisel can I ...
1
vote
2answers
89 views

Why are the deck footing blocks set away from the house several inches in this video?

I watched this video (building a free-standing porch) and wondered what is the reason that the back concrete blocks are not tight to the house wall. Basically he places them away from the house by a ...
1
vote
1answer
878 views

Mitigating an out of plumb foundation wall

My wife and I bought a house (built in 1985, Atlanta GA suburbs) with a fully finished basement that recently had a hot water heater leak that ruined the laminate floor. This disaster actually was ...
1
vote
2answers
606 views

Hanging large TV and media cabinet on cement block covered with drywall

I'm planning on hang a 75" TV and a media center on my wall. It is cement block covered with drywall. Drywall is installed using some sort of metal furring strips so there are no studs. I believe all ...
1
vote
2answers
240 views

Can you polish a concrete pier block?

I've been searching google for awhile but can't find a straight answer (every link is about walls/floors): Can I polish (or sand to be smoother at least) a concrete pier block? I have this one from ...
1
vote
1answer
636 views

Best way to cover stair using concrete retaining wall block

I have spent 3 days creating this stair and I still don't like to look. The reason is that I have tons of those retaining wall blocks so I have to use them all to create the stair. The first try was ...
1
vote
1answer
119 views

How to build a CMU wall to specific size?

My current design for a garage is 24' by 24'. There are 2 garage doors on the front 9' in width, with 1 1/2" on each side to install them into. This leaves 66" for the front facing CMU wall, which is ...
1
vote
1answer
385 views

What type of anchor for fastening to block wall?

So, I started with What type of screws and anchors are used for concrete? - but it's not particularly clear to me. I (hammer) drilled 5/32" holes into an exterior wall for 3/16" tapcon screws. These ...
1
vote
2answers
4k views

How can I install a new internal nonbearing concrete block wall in basement to partition off for bathroom?

house is built of concrete blocks, so basement floor is poured concrete and ceiling also. Want to know how to secure wall being built to ceiling and not having wall collapse
1
vote
1answer
2k views

How to keep a block wall from blowing out at the bottom

I am hiring block masons to build me a 24' x 44' block building, and I want to know how to keep the lower courses of blocks from bowing under pressure of 3 feet of dirt backfill or weight from the ...
1
vote
1answer
3k views

How can I drill through concrete blocks to allow drainage from my backyard?

My back yard has a brick floor and is surrounded by a concrete block wall. In heavy rains, the yard pools with rain water. How do I go about cutting drain holes in the wall or floor?
1
vote
0answers
24 views

Ok to use green Spax lags as anchors in block wall?

I've got a basement project where I'm attaching 3in studs over 1 inch foam to a block wall (built ~1952). I was planning on using Tapcons, but the threads are not holding. The 1/4 green Spax lags look ...
1
vote
0answers
63 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 ...
1
vote
0answers
628 views

Converting garage into living room?

We want to convert the garage into the living room. Our house has a crawl space under it. But the garage is a slab with cinder blocks around it. Water comes in through the garage door when it rains ...
0
votes
3answers
365 views

Mounting a pull up bar on hollow concrete block wall

I’m trying to mount a Pull-up bar like this one on a hollow concrete block wall. I’m planning on using some concrete sleeve anchors, but I also have seen people anchor some wood planks into the wall ...
0
votes
2answers
2k views

Mounting TV on Thick Drywall + 1" Stud + Concrete blocks

I am trying to mount my 55" TV to the wall in our basement. It is an old (~1930) semi-detached house and I am a mounting it to the shared wall. As best as I can figure out, we have 1.5" drywall ...
0
votes
1answer
507 views

Layout method using concrete retaining wall block for angled wall

I am planning to use the rectangular 12x4 retaining wall blocks as below http://www.lowes.com/pd_357656-215-30732___?productId=3722166 This is because we like the design of this better than using ...