teck foil insulation

Frank_3

I don't think it's going to do you much good under a slab. The way it was presented to me was that the TekFoil needed to be facing an air gap to be effective. If you can visualize the sandwich, it was described to me as radiant panel above the subfloor, then the subfloor, then a 1-inch air gap below the subfloor, then the TekFoil, then optionally insulation below the TekFoil.

Your mileage may vary.

Wayne_3

teck foil bubble insulation

Any comments on the quality and effectivness of teck foil bubble insulation for under slab radiant jobs? A contractor friend wants to use teck foil bubble insulation under a basement floor ( to save time and money )for me to install radiant piping. I am used to using hard board ( polystyrene or something)insulation . I thought the bubbles would compress or pop and turn the insulation into expensive vapor barrier. Has any one used this stuff ? What do you think? Thanks Wayne

Chris_4

we prefer

Insultarp to the bubble foil.

check it out http://www.insultarp.com/insultarp.com/index.htm

Chris

KCA_2

Bubble wrap

> Any comments on the quality and effectivness of

> teck foil bubble insulation for under slab

> radiant jobs? A contractor friend wants to use

> teck foil bubble insulation under a basement

> floor ( to save time and money )for me to install

> radiant piping. I am used to using hard board (

> polystyrene or something)insulation . I thought

> the bubbles would compress or pop and turn the

> insulation into expensive vapor barrier. Has any

> one used this stuff ? What do you think? Thanks

> Wayne




Heat energy is generated in different forms.
1. Radiant - reflective backed insulation does insulate
this.
2. Conductive - If the ground is wet (high moisture
content, or if there is a dense bedrock
under slab, buble wrap will not work to
insulate against conductive transferance
of heat.

KCA_2

Bubble wrap


Heat energy is generated in different forms.
1. Radiant - reflective backed insulation does insulate
this.
2. Conductive - If the ground is wet (high moisture
content, or if there is a dense bedrock
under slab, buble wrap will not work to
insulate against conductive transferance
of heat.
3. Convective - Not as much as an issue in slab.

The R value ratings are based upon the Radiant energy insulative factors. The 1/2" +- air gap isn't sufficiant to insulate against conductive or convective energy transferance.

But I could be wrong!! :-)

Kca

Floyd

Have used the double bubble....

really couldn't tell much difference between that and 2" blue board.... and I know which I would rather
work with!!!!!

Get the stuff with the white poly on one side and place it towards the concrete....

Time will tell here, there are as many veiws on this subject as there are people.....

I will admit though that the insutarp looks like a great idea... never used it though....
probably will when I get a chance too, just to try it out.

Floyd

kevin_5

My favorite is Low-E

It's two 1/4 inch sheets of closed cell foam and a sheet of aluminum sandwiched in the middle. It seems to me to be a more substantial product than the bubble wraps I've used, and the aluminum is protected from the ground which could possibly attack it. They call it slab shield. I haven't used the insultarp. Kevin By the way, all the stuff I've used works great with the Wirsbo manual stapler. Throw away your tie wires and quit bending over!