Which way should the foil facing on polyiso rigid foam face?
Dec 16, 2017 · As Dana explained, the foil facing on rigid foam has the effect of raising the R-value of an adjacent air space if there is an adjacent air space. It doesn't matter which side of …
insulation board. what way round should foil side face?
Dec 18, 2009 · The boards have foil on one side, some kind of expanded foam stuff and a white matted sheet (feels a bit fibreglass like but not sure what it is) completing the board. I have put …
Reflective side in or out? - GreenBuildingAdvisor
Mar 29, 2016 · The aluminum facing can act as a useful radiant barrier, but only if it faces an air space. In your case, the outermost layer of rigid foam should have the aluminum side facing …
Orienting Foil-Faced Foam-Board Insulation
Nov 22, 2020 · I have an old house that was prefab (1950’s). The walls are plywood inside and out with what appear to be furring strip material used as studs. Every 37″ there is a metal strip …
Which way does rigid foam insulation face? - GreenBuildingAdvisor
Jul 17, 2019 · A. Either one will work fine. For more information on this issue, see "Choosing Rigid Foam." Q. "Which face of the boards should should face inward?" A. With most brands of rigid …
Radiant barrier OSB on a roof, foil side out
R30 rock wool is designed to fit 2x8 rafters, and is both cheaper and higher R than open cell foam. With 1.5" of foil faced polyiso on the exterior and R30 batts it would beat the IRC …
Foil faced ridged foam board near boiler? - GreenBuildingAdvisor
Feb 25, 2020 · Label side out is for inspectors to confirm the product installed if left exposed. MaineGuy80 | Mar 02, 2020 06:56pm | #16 Thank you everyone, I will probably just leave the …
Foil faced insulation on basement walls? - GreenBuildingAdvisor
Aug 21, 2022 · My typical detail is foil-faced polyiso against the concrete walls, and if the space is to be finished, fluffy insulation in a stud wall to the interior of the foam. Foil-faced EPS would …
1 1/2″ Foam Board Insulation with foil face in walls
I’ll add that when using 1.5” rigid foam on the interior of the wall, you can run your electrical using 1.5” deep 4” square boxes in holes cut in the foam board. Use mud rings to bring the devices …
Silverboard Evaluation or Opinions? - GreenBuildingAdvisor
Sep 20, 2017 · Other types of rigid foam, notably polyisocyanurate, are also available in foil-faced versions. If the foil facing of any insulation is facing an air space, then the adjacent air space …