I skipped it on a 400 square foot patio last July and the slab cracked in 3 places within a week because the ground sucked all the moisture out before I could even finish troweling. Has anyone else had that happen or was it just my bad luck with the mix?
Tbh I tried that cheap acrylic sealer from the big box store in Tulsa last month and it turned my whole driveway patch into a sticky mess. It peeled off within two weeks after a rain storm and now I gotta grind it all off and start over. Lost about $300 on the product plus three full days of work dealing with the cleanup. Has anyone else had luck with a decent sealer that actually holds up to Oklahoma weather?
Everybody always says to bust out your flat work first thing in the morning. But after hitting 500 flat drives on a big garage slab in Portland running back and forth all afternoon, I think a late start gives better results because the concrete sets up more evenly in the afternoon heat. Anyone else find their best finishing happens later in the day?
I just wrapped a driveway in Austin where I compared a cheap $8 gallon of release agent from the big box store against a $25 gallon from my local supply house. The cheap stuff made the stamps stick and pull up the edges on two sections, cost me an extra 4 hours of patching and re-stamping. The good stuff let me pull clean patterns all day. Anyone else learn this the hard way with release agents?
I've been finishing curbs for about 15 years now and watched the old guys do it with those hand edgers. Couple months ago on a job in Phoenix I was rubbing a curb with a wet sponge and realized if I put a little burlap sack over the sponge it gives that real smooth finish without gouging. Saves me about 20 minutes per curb compared to fighting with the metal edger. Has anyone else tried something like that or am I just late to the party?
Last month a veteran finisher watched me work a slab and casually said my trowel angle was all off, I was tilting it too much on the finish pass. He showed me how keeping it flatter stops those little ridges I always thought were normal. Has anyone else had a senior finisher point out a basic mistake you'd been doing for years?
I was picking up rebar at the local yard in Phoenix last Wednesday and overheard this old finisher talking to the clerk. He said he's been using the same cheap wax-based compound for 15 years and never gets cracks, while I've been dropping $40 a gallon on the fancy stuff. I asked him about it and he showed me his trick: he sprays it on heavier and then wets it down twice a day for the first week instead of just once. I tried it on a 30-yard driveway last Friday and so far so good, no checking at all. Made me wonder how many other expensive products I'm using that have a simple workaround. Has anyone else found a cheaper alternative that works just as good for finishing?
I was on a job last week over in Denver, doing a big warehouse floor. The foreman was yellin at one of the guys about saw cutting control joints. He said if you gotta do crack inductions you already messed up the subgrade or the mix. Never thought of it that way. I always figured joints are just part of the deal. But he had a point. We spent a lot of time fixing a section that got all spiderwebby. Made me wonder if we should be spending more time on base prep instead. Has anyone else had a crew that relies too much on saw cuts to fix bad work?
The old apron settled and cracked within a year, so I tore it out last spring and put in a 6-bag mix with fiber mesh instead of that cheap 4-bag stuff. My neighbor actually stopped to ask who did the work, first time anyone's complimented concrete around here. Anyone else spend way too long on a single slab before it finally looked right?
Poured a big driveway in Phoenix last week. Temps hit 95 and the truck was late. The cold joint showed up right in the middle and now the homeowner is pissed. Anyone have a trick for blending fresh pours on hot days?
Passed by that big warehouse slab we poured off Route 9 back in '08. Funny how the control joints still look good but the warehouse got repurposed into a brewery. Saw some spalling near the dock where they must've dropped something heavy. You ever go back to an old job and notice stuff you wish you'd done different?
I was hanging around waiting for my truck to get an oil change and saw their crew pouring a slab for the new service bay. They skipped the control joints and within 4 hours a hairline crack ran right through the middle of the fresh pour. Has anyone else had a customer refuse to pay for joints and then blame you when the concrete does what concrete does?
I was on a big pour last Thursday near Austin and saw three finishers kneeling directly on fresh concrete in 95 degree sun. By the time they stood up their jeans were stuck to their legs and they had red marks that looked like burns. Why would you not just wear knee pads or at least put down a scrap of plywood under you? I keep a set of gel pads in my truck for this exact reason because a bad knee burn can put you out for a week. Has anyone else dealt with concrete burns that crept up on you because you were too focused on the finish?
I was working a big slab pour in Atlanta last August, this guy named Walt who had to be 65 watched me hose down the concrete. He told me to use wet burlap and keep it on for 7 days instead of just spraying it. Said the water evaporates too fast in the heat and you get surface cracks. I did it his way on that job and had zero cracking. Any of you guys use burlap for longer cures or is it just an old school thing?
Was screeding a 40 yard driveway last winter and had 3 panels surface scale right in front of me, realized I'd been running my mixer too dry for like 5 years. Any other guys here just dump the air entrainer in without checking slump first?
Used to think any old release agent would do the job, but a massive blowout on a patio taught me otherwise. Anybody else learn the hard way that bargain powder ruins your color consistency?
Honestly, I've been fighting edge curling on my residential driveways for years. Last month on a job in Fresno, I tried wetting the subgrade an hour before the pour instead of just right before. It gave me way more working time and the edges stayed flat. Has anyone else tried this or got a better method for dry climates?
It was a Tuesday in April on a driveway job in Austin. Everything just lined up - the temp was 72, humidity was low, and the mix came in at exactly 5 inches of slump. We got the whole 30-yard slab placed, bull floated, and broom finished before lunch with zero cracking or chipping. Has anyone else had one of those days where you feel like you couldn't mess it up if you tried?
Back in July, this old timer on a parking lot pour in Phoenix showed me his trick. He said soak the burlap, lay it down, then cover with plastic sheeting. I always just sprayed water and let it dry out too fast. Have you guys ever had a slab crack from bad curing?
Always thought power trowels were for lazy finishers but my back gave out after 3 hours on a 400 square foot slab in Phoenix last month so I gave in. Used a 36 inch trowel for the first time and got a butter-smooth finish in half the time, anyone else make the switch and actually like it?
Overheard him bragging about how he adds extra water to make it easier to work with, and it hit me why three of our slabs had that ugly scaling last summer. Anybody else have to deal with a guy who thinks he knows better than the bag?
I saw a guy last week using a 6-inch thin pan on a 6-yard slab and it curled up like a potato chip after three passes. If you are spending more than 20 bucks on a float pan, make sure it is at least 3/16 thick or you are just fighting the tool instead of the concrete. Has anyone else noticed this cheap pan trend ruining finishes?
I was out in Omaha helping a buddy with a driveway pour and this old timer shows up with burlap sacks and a garden hose. He said to keep the burlap wet and cover the slab for a full 7 days straight, no exceptions. I always just used curing compound spray before, but the color on this slab came out way more even and no surface cracks at all. Has anyone else tried wet burlap instead of the spray-on stuff?
Old timer named Dave with 30 years in the game said I had to keep that garage floor wet for a full two weeks. I thought he was being extra, figured 5 days of misting would do the job since temps were mild. Came back a month later and there's a web of tiny hairline cracks across the whole 20x20 slab. Did I screw myself by cutting the cure short, or is this just bad mix from the plant? Anyone else try a quick cure and regret it?