Wood or Plastic Cages?

Originally Posted by wcreptiles

I have Boaphile cages with Flexwatt sealed between plastic inside the cages and it sure doesn't look like it has an air gap. I also have under-cage Flexwatt heating type cages sitting on top of each other without an air gap. I haven't had problems with either one, yet.

I'm not saying sandwiching it will not work, but I did want to point out that in that case Jeff uses a different type of flexwatt than what is available to us from the usual suppliers. It's a low wattage type. A panel of his 21"x22" draws 17 watts, whereas 2 feet of 11" wide regular flex pulls 40 watts.
He does use the 11" in his racks, and says this about it on his website:

Our racks are built using the 11" - 20 Watt per lineal foot material. Because of this higher wattage a ½" air gap is allowed for this Flexwatt allowing the heat to disperse properly as is recommended.

This was one of the main reasons I always considered it borderline dangerous to seal up the 11" wide variety. Further conversations have caused me to rethink that position, but I still want to do a test on it first.

This is the thread I remember about the ceramic tile.

http://www.faunaclassifieds.com/foru...t=ceramic+tile

Originally Posted by Bill & Amy

It actually looks like it will work quite well. I installed 4 ceramic tiles 2 on top of 2, with the flexwatt sandwiched in between. I caulked the bottom tiles down, put the flexwatt in and caulked the edges of the second tiles. Then I caulked all the way around the tiles and let it dry. The first day it took about an hour to heat up the thermal mass, now it stays at a perfect 92 degrees.