r/Concrete

The city of Chengdu, China covered its viaducts and overpasses in vines and plants. It actually helps protect the concrete by shielding it from rain, sunlight, and the elements.
▲ 1.3k r/Concrete+1 crossposts

The city of Chengdu, China covered its viaducts and overpasses in vines and plants. It actually helps protect the concrete by shielding it from rain, sunlight, and the elements.

u/TangelaFan — 8 hours ago

Rough day on Monday

Had a form blow out on us pouring a mud slab. What I thought would be an easy, short day turned out to be…not that, but we got the form reset and finished the pour. Thankfully this has no structural value, it’s just a working surface.

u/Phriday — 12 hours ago
▲ 319 r/Concrete

Another one added to the books

Sandfinish using 03 topcast , 7 yards of light gray w microfiber, Sawcuts tomorrow. Sucks being stressed but at 22 it’s worth it at the end

u/Tight_Cream125 — 19 hours ago
▲ 227 r/Concrete

Poured at 7, starting the saw at 5

We did 3 of these all next door to each other. 3 sisters, feels like I could land a plane on these driveways. 31 feet wide, 76 feet long

EDIT: all cut and washed

u/cd3393 — 1 day ago
▲ 323 r/Concrete+1 crossposts

Concrete Pad Under A Weird Deck

My buddy sent me these photos. This pour was done like this at the customers request. Figured I’d share.

u/SoupedUpMoped — 1 day ago
▲ 389 r/Concrete+1 crossposts

App developers are going to be banned without warning.

Seriously. Fuck off.

No one wants your unoriginal app or website. We know the scripts you use for "market research". You are all selling the same thing.

I don't care how helpful you think you are or if its for "free". I dont care if you are "in the trades". It is not welcome here and app developers will be permanently banned without warning.

Dont come crying in the modmail because you chose to bother the members of this sub. I'll just mute you and move on with my day.

ETA: this includes but is not limited to concrete calculators, construction calculators, quote generators, invoice generators, estimating apps, AI image generators, scheduling apps, project managment programs, etc.

This is not a new policy as posting apps violates the rules against advertising and spam, but some people apparently need it spelled out.

reddit.com

Weekly Homeowner Megathread--Civilians, ask here!

Please take a look at the WikiFAQ posted here: https://old.reddit.com/r/Concrete/wiki/index

The chances that your situation is covered in the WikiFAQ are pretty dang good.

If your issue is NOT covered in the WikiFAQ, this is the place to ask if that hairline crack warrants a full tear-out and if the quote for $10k on 35 SF of sidewalk is a reasonable price.

reddit.com
u/AutoModerator — 1 day ago

Should be an interesting one to grind and polish.

Casting a concrete (GFRC) table top with integral pigments- work in progress.

36"x1", and 75lbs.

I shared the same technique while I was trying a sample of a new bagged GFRC product, but I bailed at the face coat because it didn't self-consolidate as intended. Some of you may remember that post, but if you'd like to compare- the difference is drastic: https://www.reddit.com/r/Concrete/comments/1lzbm6h/thought_id_share_another_fail_i_bailed_at_the/

u/drew8585 — 1 day ago
▲ 60 r/Concrete+2 crossposts

Free tool for estimating foundation materials for field guys.

Hello, made a app to assist in estimating materials for foundations. 100% offline and completely free. Find it here.

u/bldrlife1 — 2 days ago
▲ 1.0k r/Concrete+1 crossposts

Looks legit.

Not my work. I wonder how long it will last? lol

u/CPTIroc — 4 days ago

Someone else’s stamp post reminded me to post!

I always mean to post the fun jobs like this one but I’m so bad at it, this sub popped in my feed again and reminded me to post this one we just wrapped up this weekend, came out absolutely fuckin flawless!! Super happy and proud of it. I wanted to keep it for myself.

u/barlos08 — 3 days ago

Enlighten Me!

I’m not a concrete contractor myself, but I work in operations and have become really interested in how blue-collar businesses manage estimating, leads, scheduling, quoting, etc.

One thing I’ve noticed from the outside is that a lot of contractors seem to still juggle:

  • texts
  • phone calls
  • paper notes
  • spreadsheets
  • memory

I’m curious how true that actually is in the real world.

I’d genuinely love to hear from actual concrete guys here:

  1. What’s the MOST annoying part of running the business side of concrete work?
  2. How are you currently handling estimates and quotes?
  3. What causes the most wasted time during the bidding process?
  4. Do leads ever slip through the cracks or go cold because you’re too busy on jobs?
  5. Have you tried any CRM or contractor software? If so, what did you hate about it?
  6. If you could wave a magic wand and automate ONE part of your business tomorrow, what would it be?
  7. Would photo-based estimating/AI-assisted quoting actually be useful, or is that unrealistic for concrete work?

Not trying to sell anything — I’m honestly trying to learn where the real pain points are from the people actually doing the work every day.

I’d appreciate any insight you guys are willing to share.

reddit.com
u/Disastrous-Current32 — 2 days ago

Starting a Business

Hello,

I’m making this post hoping to get some advice or guidance from people who have experience starting a business in the concrete industry. For some background, I’m 19 years old and have been working in concrete since I was 14. I’ve been with the same company for the past 5 years and have gotten pretty close with the owner. Because of that, I’ve been given more responsibilities over time, like coordinating trucks and workers, dealing with customers, and helping manage job sites.
I feel like I have a solid amount of knowledge and experience when it comes to concrete work and how sites operate, but I also know running a business is a completely different field. I’m mainly trying to avoid getting blindsided by things I’m not prepared for. I know mistakes are part of learning, but I’d still rather learn from people who’ve already been through it.

Over the last year I’ve also started experimenting a bit with doing small jobs on my own while still working for the company. So far I’ve done a few 11x11 greenhouse pads and some stair jobs through word of mouth and local posts from people looking for concrete work. Everything went well, customers were happy, and the jobs turned out good. Nothing huge yet, mostly solo work but it’s definitely motivated me more.

I’ve also been saving money since I started working, so I do have enough put away to start small. I’ve always wanted to work for myself, and I’m pretty ambitious about it. At the same time, I know I’m still young and probably have a lot left to learn.
I’m really just looking for feedback from people who’ve started businesses, currently own one, or have been in the concrete industry for a long time. What should I expect? What should I prepare for? Any advice, lessons, should I wait before trying anything, or things you wish you knew earlier would be appreciated.

Thank you.

reddit.com
u/Dumb_shit527 — 4 days ago
▲ 7 r/Concrete+2 crossposts

Self-leveling is not magic

Look man, let me break this down straight. You think self-leveling concrete is some magic that’ll make any floor flat? Nah, that’s not how it works. This stuff is just a flowable cementitious topping, not a filler for big dips.

Think of it like this: if your base floor’s already wavy and uneven, pouring this on top is just gonna make a wavy, uneven layer on top of it. It follows gravity, sure—but gravity only works if the starting surface is close enough to flat to begin with.

That’s why we grind first. We knock down high spots, strip the weak top layer, and get it as true as possible. The self-leveler’s job isn’t to fix the big problems—it’s to smooth out the small stuff and give you a consistent, flat finish on a properly prepped base.

Skip the grind, and you’re just pouring money into a band-aid. It’ll still follow the original floor’s contours, and you’ll be right back where you started. This stuff only works when you do the prep work first.

u/Repulsive_School_985 — 4 days ago
▲ 134 r/Concrete

10' wall with walkout and crawl space

A large 9'-10"x10" wall with a walkout staircase and a 3'-10"x10" crawl space wall. 4 double rows #5 and #5 verticals at 24" on center. A bit of stacked wall for joist shelf for a slab to be poured against to protect the framing.

u/Special-Egg-5809 — 4 days ago
▲ 3 r/Concrete+3 crossposts

Concrete floor, extend DPM and fill void

I have a small void where previous owner made a back extension but didn't take the concrete floor right up to external door edge.

I need to fill the void with concrete.

Any tips on how folks would do this?

Fill void with concrete half way, then lay a piece of DPM overlapping with the existing bit, the extra concrete on top?

Or put insulation board in the void, then DPM on top, followed by concrete?

u/TeaMedical5514 — 3 days ago
▲ 163 r/Concrete

I made myself a concrete desk.

About 8ft x 2ft, 1.5" thick. Simple but functional.

u/drew8585 — 5 days ago