Is it normal for my lower back to feel this locked up after only two weeks?

The stiffness you're feeling isn't just a greenhorn break-in period; it's your body redlining before you've even learned the trade. I spent thirty years on everythign from highway curbs to residential flatwork, and I can tell you that the guys who make it to retirement without a permanent limp are the ones who knew when to swap out. Those older guys aren't just stronger than you; they've learned to move with the concrete instead of fighting it. When you're pulling a screed, you have to use your hips and legs to drive the weight, not your lower back. If you're using all arm and back muscle, you're going to blow a disc before you're thirty. Never turn down a swap on the bull float or the rake. On a big pour, even a five-minute breather prevents the kind of muscle fatigue that leads to sloppy form and real injuries. The crew doesn't think you're soft for rotating out; they think you're a liability if you're so gassed that you start tripping over the mesh or messing up the finish. Real toughness in this business is being able to show up and do the same work tomorrow, and the day after that, and twenty years from now. Pushing thru 'glass back' pain is how you end up in a career change by twenty-five.

Get yourself a decent pair of **knee pads** or a kneeling mat for when you're on the edges, and don't be afraid to ask for a second set of hands on the heavy forms. Dragging those 10-footers solo is a quick way to tear a rotator cuff. And start a stretching routine every morning and night—specifically your hamstrings and hip flexors. Tight hammies are ussually what's acutally pulling on your lower back and making it impossible to tie your boots. If you want to keep your edge, you have to treat your body like the most expensive tool on the truck. You wouldn't run a mixer into the dirt without grease; don't do it to your joints.

I learned the hard way that boots are where the money goes. I used to buy cheap stuff and my arches were killing me every night. Swapped to some high-end wedge soles and it acutally saved my lower back. Also, start drinking way more water than you think you need. I used to get those 'glass back' pains too, and realized half of it was just my muscles cramping up from being dehydrated while dragging that screed. Keep a gallon in the truck and hit it every time you see the lead taking a swig.

He's right about the back pain, but if your knees are throbbing, you need to stop raw-dogging it on the concrete. I swear by the Troxell USA Super Soft leatherhead knee pads. They’ve got a single strap that doesn't pinch your legs while you're moving around, and the cushion acutally holds up under a 200lb guy. If you keep kneeling on the hard stuff without real protection, you'll have permanent swelling by next season. Get the Troxells and you won't feel like you're walking on glass the next morning.

You relly need to evaluate the specific length of the extension handles you're utilizing for that bull float becuase if the total reach exceeds the optimal leverage ratio for your skeletal frame, you're essentially compounding the compressive force on your L4 and L5 vertebrae with every pass across the slab. While the others mentioned boots and pads, nobody has touched on the necessity of maintaining a neutral wrist position during the pitch adjustment, as any unnecessary ulnar deviation while under load can lead to carpal tunnel issues faster than you’d expect. Also, ensure you’re neutralizing the pH on your skin after the pour because even minor sub-clinical cement burns can exacerbate the localized inflammation in your joints.

Update: I picked up those Troxell knee pads and they're a total game changer for the driveway pours. My knees actualy feel human at the end of the day. My lower back is still giving me grief though, especally when I'm pulling the screed. Does the 'glass back' feeling eventually go away once the muscles build up, or am I still just lifting wrong?