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Re: Ice Melt Mat

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Sorry about the delay Paul, I was waiting for the MEP engineer to get back to me.  He gave me the following reference to the product he specified in a recent job with me.  We haven't got to the work site with it yet. 
It is a water system, pumping heated water through a 1/2"ID pipe attached to the wire mesh in a 4" concrete slab on Hambro joists.

The installation handbook is here :

The MEP eng. says they almost always attach it to a wire mesh, even in a reinforced slab, to ensure that the conduits remain where you want them during the pour. 

A wire mesh is more economical than a second pour for a topping.  In a reinforced slab, I would probably try to find a way to use the wire mesh only in areas where the reinforcement is not convenient for attaching.

I notice that Google gives a lot of hits for snowmelt systems, and I wonder if your system is similar...


On 3/30/07, Paul Feather <PFeather(--nospam--at)> wrote:



Can you describe the system a little more fully?  Are you referring to an electrical heating system that is attached prior to concrete placement for space heating (occupants) ?


From: Kevin Below [mailto:kbofoz(--nospam--at)]
Sent: Tuesday, March 27, 2007 8:31 PM
To: seaint(--nospam--at)
Subject: Re: Ice Melt Mat


Paul, I have never heard of Ice Melt mats here in Quebec, but we do use in-slab heating conduits.  We attach them to the rebars at the correct height before the pour.  I can imagine that holding the top of concrete down to the correct height means almost doubling the cost of placing the concrete, because you will need 2 placing and screeding operations.

On 3/27/07, Paul Feather < PFeather(--nospam--at)> wrote:

Is anyone familiar with the use of electric Ice Melt mats in cast-in-place concrete construction?


I have some PT flat plate parking structures where the MEP is recommending the use of Ice Melt mats on the upper level.  Reading the installation guidelines the system appears to be primarily for slab on grade (joints every 20 feet, holding the top of concrete down 2 inches, placing the mat, and finishing the concrete placement).


I am concerned that if they try and hold the concrete down and mess around with placing the system I will get false set and a failure plane in my slab system.  They are not proposing incorporating a topping slab, but installing this system in the structural slab.


I have zero experience with this application.  Can some of my cold weather colleagues share any experiences?


Paul Feather PE, SE