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  1. jfkopper

    Power disconnect panel for spa...

    If your spa is ever used by kids, I would suggest placing the disconnect low enough to be easily used by the youngest---if Mom gets her hair caught in the suction port, help might need to come from the smallest of spa mates. For a scary (and tragic, but relevant) story see...
  2. jfkopper

    Best way to drywall 8'2" ceiling

    Put the 2 inch strip at the bottom ... Push the sheetrock to the ceiling, so that the 2 inch gap is at the bottom. Fill the gap with a strip of sheetrock and tape the joint in the usual way, but cover (as in "hide") the joint with the baseboard---typically at least 4in tall. Be safe, /kop
  3. jfkopper

    Lighted Head Gear

    Strap light better than hat light Besides the hat light's bill being in the way for lighting close-up work, the hat light (at 18.99 + ship) compared to this strap model ...
  4. jfkopper

    3/4 supply.....1/2 section.....3/4 run....

    " ... I really like those charts about the copper ..." A master plumber saying he's impressed---that makes my day. /kop
  5. jfkopper

    3/4 supply.....1/2 section.....3/4 run....

    options for a confined space Consider bypassing the 1/2" bootleneck with a run a new pipe at 3/4" OR even 1" diameter (@ $3 a foot in Type L copper nowadays---PEX looks better and better). Pick the exit and reentry points into the existing line to be those easiest to work at. The water flow...
  6. jfkopper

    Galv pipe vs balck iron/ teflon tape

    At least one state's plumbing code forbids the use of galvanized pipe for fuel gas plumbing. (Whether this prohibition is scientifically valid---I don't know.) As always, best to do what the AHJ requires. Be safe, /kop
  7. jfkopper

    3/4 supply.....1/2 section.....3/4 run....

    Referring to http://www.irrigationtutorials.com/copperloss.htm and assuming worst case that a) the 1/2" length is Type L copper (type M is thinner and thus larger in ID) and b) the flow rate is 5 GPM (very hot shower at very high volume), the pressure loss in 1 foot of 1/2" is less than...
  8. jfkopper

    Soundproofing

    Generally, the fire codes require that foam insulation products installed in/on walls and ceilings be covered with a material of a suitable fire rating. One possibility is radiant barrier (like heavy Al foil). I recommend you take a look at the Green Glue option. The data are pretty...
  9. jfkopper

    Soundproofing

    This product http://www.greengluecompany.com/ was mentioned in a letter to Fine Homebuilding magazine (FH, Issue 185, March 2007, pg 10) comparing sound control products. The lab data are compelling and the ease of use in remodeling very attractive. I plan to try this product on my next...
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