deepstuff
Well-known member
I'm getting ready to pour a slab for a garage. Is regular pex tubing suitable to be used for penetraton through the slab?
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Water pipe through slab, Pex?
- Thread starter deepstuff
- Start date
bob15
Well-known member
Not sure if it is code allowed, but I would put a larger piece of PVC in the slab (kinda like a raceway). Then you can run the pex through that and it will allow replacement or more lines if ever needed.
Rookie2
Well-known member
I would do a sleeve also ,for protection.
pstnbly
Well-known member
Polyethylene pipe (black plastic pipe) is commonly used in place of K copper. It comes in 100, 160, 200psi ratings. 160psi is the commonly used pipe for water service entrances. Pex pipe is more easily kinked and crushed.
wes73
Well-known member
I would sleeve it for the entire length. I sleeved mine in 2" conduit for the entire length (110') between the house and garage. Stubbed into both. This way you can easily replace it if something would ever happen.
cashishift
Well-known member
Not sure if it is code allowed, but I would put a larger piece of PVC in the slab (kinda like a raceway). Then you can run the pex through that and it will allow replacement or more lines if ever needed.
this is what i'd do also
ddawg16
Well-known member
Another vote for sleeves.....
If there is 'any' movement of the PEX without a sleeve, the concrete could scrape away the wall until it leaks.
When I ran my 3" DW line through my existing foundation footing, I installed a metal pipe in the concrete to act as a sleeve. A 4" pipe worked out just about perfect. Just enough room to squirt in some RTV for sealing.
If there is 'any' movement of the PEX without a sleeve, the concrete could scrape away the wall until it leaks.
When I ran my 3" DW line through my existing foundation footing, I installed a metal pipe in the concrete to act as a sleeve. A 4" pipe worked out just about perfect. Just enough room to squirt in some RTV for sealing.
Doozer75
Well-known member
If you are running hot and cold water PEX lines under the slab
insulate them with foam sleeves, so the hot water stays hot
and the cold water stays cold. Most forget how important this
is to do. Why have the hot water heater put all that energy
into the water, only to have the earth absorb it away??
-Doozer
insulate them with foam sleeves, so the hot water stays hot
and the cold water stays cold. Most forget how important this
is to do. Why have the hot water heater put all that energy
into the water, only to have the earth absorb it away??
-Doozer