Recent content by tinyrobotman

Will post when I have an estimate. Just FYI I'm not getting robot grind, just a guy with a big machine.

Yep, then grinding guy said that will be an issue unless he grinds all the way into the aggregate on the entire floor. Depending on the cost I might have him do the entire floor to expose the stone. I like that look anyway.

Damn it, there goes the patent. I talked to a guy with a big multihead grinder today. He looked at the slab and claims it will flatten the lumps. If his quote isn't too bad I'll probably just go that route and polish to a matte polish.

With water it seems like if you get a leak during the pour and have water spraying out into your concrete that would make a bigger mess?

Good to know. That sounded kind of like BS to me when he suggested it. I guess I could see how the tubes could spring back during floating making a hump but it seems like he's trying to put the blame on my pex. They hand crawled the slab and didn't use a power float pan before troweling could...

Had 100 psi in it during the pour in case of damage.

So the finisher is suggesting that the lumpiness is due to the PEX radiant tubing telegraphing through during the finishing. I had it ziptied to the rebar which is #4 18" OC. Tubing is 12" spacing but I tied it at every spot it crosses a bar. Has anyone heard of that where PEX caused finishing...

Ha, go for it as long as you can make me a flat floor. I mean it seems obvious to someone who works in the CNC world. Like flattening a piece of stock on the CNC but just upside down on concrete. I'm used to working down to about +/-.002"of the Z axis so this concrete stuff where they talk about...

I was thinking that someone should invent a floor flattening machine. Basically a robot that maps the floor with a laser and raises the grinding head up and down automatically based on some +/- tolerance value. I need to put a tool cart on the slab next week and see how it rolls. If it's like a...

Yeah, there needs to be a public service campaign about "F" specs. I had no idea until after this fiasco. Well we're definitely way out of 1/8" in 10'. Just the crown in the middle is 1/2" in 13'. These idiots screeded in a slope off a center post base bolt carrier that they I guess just...

No, something I learned after the fact that you can specify the flatness. One of those thing I assumed they would just do. Like isn't concrete just supposed to be flat. Well evidently not always. Not an option to tear out. Partly because of the stuff that was put underneath and that I need to...

I've got a grind and polish guy coming by to take a look. From what I saved doing all the prep myself I've got some room in the budget to fix this if possible. I just finished stripping the forms and there's a little bit of a horizontal cold joint between the slab pour and the thickened footing...

Yeah in general concrete in general doesn't attract the highest talent in the trades. Obviously there are some true meticulous craftsman but the general labor pool isn't great. A friend had a patio done and one of the guys was wearing an ankle monitor.

Yep you get references and recommendations but with concrete what's acceptable for one person or use could be very different. As you said with concrete what's done is literally cast in cement after only a few hours. Since most marginal flat work won't be actually ripped out and redone after a...

Yeah, I agree. Seems to be a common complaint. I think it's one of those things where you have a contractor once out of the blue for a job where there's basically no way to fix it afterwards. Also what's acceptable for a horse barn is very different than for a machine shop.