Insulation, Radiant and Vapor Barriers - Insulation for Staple-Up Radiant

I have staple-up radiant using heat transfer plates for my first floor. These are currently visible from my basement between the 16" O.C. I-Joists.

I have to insulate these bays to prevent the heat from radiating downward instead of upward.

The plan was to insulate with a R-19 foil-faced batt with the foil side facing up towards the radiant tubing to reflect the heat. However, this means that raw insulation will be facing downward into the basement area, which is not desirable. This will be an exercise area and play area for the kids. I don't want insulation dust constantly falling over time. Plus just staring at the stuff makes me itch and cough. :)

I know I could install a drop ceiling but I don't want to finish the ceiling just yet.

I was thinking about adding a foil-faced bubble-wrap insulation below the R-19 to hide the insulation. However, this will be alot more work and money.

Does anyone have a better idea?

Do they make an insulation with foil-facing on both sides?

You are better off installing the foil bubble faced insulation under the radiant floor system, then installing encapsulated fiberglass insulation. If you do it your way, you will end up with a moisture problem.

Are you referring to something similar to the Johns Manville ComfortTherm poly-encapsulated insulation?

I have seen the stuff several times at Lowes and the idea never even dawned on me. I should have thought of it. :wall:

Turns out it is fire resistant and non-combustible, which addresses my other concern since it will be exposed.

Do you happen to know if anyone makes a batt that is faced on both sides with FSK-25 or similar?

Also, is there a particular brand of foil faced bubble wrap that you can recommend.