Richie Rich

Once again searching for information about a building here in texas. I've been grinding on this concrete for quite a while and am curious as to current day tolerances in the slab. For example over an 8' are the float to approximate level was about 5/8". Grinding in about 6' square area exceeded 1/2" and I'm now working on an area in the range of 5/8" grinding to approximate level within 3/16" in 10',(for floating wood floor). One room has a depression that will take at least 1/2" float (for the floating wood floor). And lastly one bay of the garage has a depression of 1/2" + in a corner. So what are current building standards for a poured concrete slab? P.s. The pex where it enters the slab is at grade - probably not a problem in north texas, but... Thanks for the information and great assist.

Hi Mike, thank you for the information!

Don't know about other parts of the country, but here in Texas English is not the common language and the building trades workmanship makes one think... We're have a home built which has joists 24" OC, builder used 1/2" sheetrock, over which we had 1" (theoretical) foam applied. Today fortunately the insulator didn't have enough Cellulose to do the job so they'll return next week. Nails are smooth shank, no screws were used. Furthermore, we're with 3 weeks of closing. The issue/question is whether the foam added enough regidity to the ceiling for the weight of the R-38 insulation. You guys always have good story, so I'll look forward to your response. Thank you.

Using 1/4" 4'x8'sheets of Hardieboard which appears to have no lap edge, how are the seams sealed? I've seen the responses to Brian(04/2005) and take note of the potential issues of nailing too close to the edge and breaking corners. Also liked the idea of shimming if the framer can't make straight lines. Any other information about using hardieboard will be appreciated.