Radiant pex layout

[buildingup]

Currently still building my barn that has a 50 x 80 enclosed area I will be looking to heat. I plan on having a vapor barrier with 2" R-10 foam on top and been looking into the oxygen barrier pex. Not sure if I can use the standard pex for radiant floor heat or this would be a better option. But one issue I am running into is figuring out what the ideal layout will be without having loops that are to long in total length. Is there a program online that I can use to give me a layout to go around my floor drains or lift? Been looking into this for a little bit now and just going cross eyed from it all.

 

[forAK]

It's free - http://www.avenir-online.com/AvenirWeb/LoopCAD/LoopCADTrial.aspx

 

[79rallysport]

^^ I used loopCAD for designing my 30x30ft shop. It worked good. 3x280ft loops, 3 port manifold, one zone. Not sure how loopCAD handles obstacles. I didn't have any so I didn't have to figure that out.

Go with the oxygen barrier pex with using it for radiant heating.

 

[4cyclic]

Blueridge offers this design service free if you buy the oxygen barrier pex from them. They also rent you the stapler.

 

[buildingup]

Appreciate it. I will look into blue ridge

 

[yeldogt]

Use the proper PEX for heat. Tighter loops = faster response and lower water temps= better system.

Nothing special about going around things -- just ... go around. They make no wax toilet flanges.

keeping the 1/2 under 300' is what you want to do. Keeping them all about the same will make the balancing easy and a simple manifold.

 

[TRX]

They make no wax toilet flanges.

Local plumbing supply houses just looked at me like I was a fool when I asked about such things, but I found foam rubber gaskets online.

Not just handy for a heated floor, but quite necessary for a toilet in a workshop without air conditioning when the temperature can go over 100F.