Radiant floor heating

[fowldreams]

I plan on putting radiant floor heating in my pole barn. Is there a benefit of running larger diameter pex, say 3/4 vs 1/2. No experience with this but I'd like to take care of this myself instead of hiring it out.

[StillwaterAaron]

The larger diameter will give a more even heating. As the water flows it cools as the concrete warms. More mass less longer lines can be used. Make sure to insulate below and the sides of the concrete.

[nobody05]

1/2 pex is 300' loops 5/8 pex is 400' loops 3/4 is 500' loops. id recommend 5/8 pex much easier to work with.

[Cheers]

make sure the pex is filled with water before covering with concrete as it tends to want to float up . Probably not an issue with 4 inch slab but if you have a thin spot can be an issue .

[Smoker]

• That is why it is to be stapled to foam insulation or tied to wire mesh. We never had a problem with it coming up with air pressure on it.