snow melt in black top

Mad Dog_2

I'm sure someone will say its not a problem though. What is he worried about? Movement or settling. I would think that compacted sand would be ok. Mark Eatherton The Snow Melt King....where are you? Mad Dog

<A HREF="http://www.heatinghelp.com/getListed.cfm?id=210&Step=30">To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"</A>

Jim Burke comfort zone

can they use

Designing a snow melt system & need to know if crushed concrete may be used to cover pex instead of sand for black top .Contractor said he will not use sand under black top .
I am a little worried about damage to pex under crushed concrete.Thanks for any input.

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Tim Doran

How Fine

Crush refine is pretty common for this application and for pavers. It is basically crushed to the size of sand. I agree with concerns if there are tho be larger chuncks of concrete.
When the crush refine is used the thermal conductivity is muck better than what a sand bed would provide.

Tim D.

Kevin Crean_2

Crushed Refine is the right choice!

I totally agree with Tim D. Use of the crushed refine is the right choice. The asphalt contractor should have no problems working with the crushed refine.

Kevin C.

Jim & Mad Dog, I am no longer with Wales Darby. I have relocated to Connecticut and have taken a job with Urell Inc. (The Uponor, Slant Fin, Grundfos, Flateplate, Spirotherm, Zoeller rep for N.E.) My territory will cover Central & Northen CT. E-mail me if you have any questions

Kevin C.

Derek Moore

sand

Tim is right..I never use sand for snowmelt, I always use stone dust like they use for pavers, Tim calls it crush refine but its all the same stuff. Different areas have different names for it.

If you use sand and if for some reason the mixing system goes bad and the water gets over 160 degrees the sand will start to crystalize and form an insulation barrier around the tubing.

Be careful to let water run through the tubing to disapate the heat when they are laying the black top.

It works well

Derek Moore

It is irreversible. Not worth the risk.

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Mad Dog_2

Good luck Kevin

I am sure we'll run in to you down the line. Happy Easter. Mad Dog

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Mad Dog_2

Ok, that makes more sense.......................................

a finely crushed aggregate, I think the paving guy wanted to use his typical rork gravel stuff...that's what had us worried. Thanks Guys. Mad Dog

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

JackFre

Sand

I think his concern is errosion. I have a 12" stone base under my sidewalk with 2-4" sand cover and I can see where I get some sand "wash-out". Lot of elevation change on the sidewalk.

Jim Burke comfort zone

snow melt



To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"

Jim Burke comfort zone

snow melt in black top

Thanks to all the reply on this subject .I met with mason on site and we will be using concrete refine over pex . I was not clear on material he would be using thought it was larger in size. Will post pic's as job moves forward.
P.S good luck to you kevin on your new postion see you soon.

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"