So, any time you use a single side foil insulation, the foil needs to be facing toward the living space. So in a loft the foil faces downward. If you install double faced insulation it doesn't really matter which side is out. Neither side does the same job.
The first layer should have the facing against the drywall to act as a vapor barrier. (The general rule for insulation is that the facing always goes toward the conditioned space.) The second layer of insulation should be unfaced so that moisture doesn't collect between the layers.
When installing faced insulation, the facing should always point toward the interior, heated, or air-conditioned space. For example: On exterior walls, the facing should touch the drywall. In attics, the facing should point down toward the ceiling below.
The metallic facer on InsulFoam R-TECH may provide additional R-Value if it's facing a dead air space. If there is no dead air space, it doesn't matter which way the metallic side is facing. Placing the metallic facer towards an open-air space may allow the material to act as a radiant barrier.
Install the Foilboard® GREEN rigid insulation panel to the external face of the studwork, ensuring the anti-glare side is facing out, measure the area you require. Tape all penetrations, joints and gaps using the Foilboard® green PVC tape, ensuring the stop of cold / hot air transfer.
if it is hot outside, the reflective part of your foil insulation must face outside. if it is freezing outside, the best orientation of the reflective part is inside.
Foil has a shiny side and a dull side because of how it is manufactured. Unless you are using foil that's labeled non-stick, which does have a non-stick side, it does not matter what side you use. Both the shiny and dull sides can be used the same way to cook, freeze, and store food.
Faced insulation refers to batt material that has a thin outer layer of paper or plastic, known as a "face". This is used to protect the material, typically fiberglass or mineral wool batts, from humidity, bacteria, and other moisture damages.
If you chose an insulation with a reflective radiant barrier, the reflective side should also face outward.
What is the pink fluffy stuff on the walls? The pink fluffy material is usually fiberglass insulation, commonly used for its safety and efficiency. It does not contain asbestos.
Stapling insulation is the best way to ensure your underfloor insulation withstands the test of time.
When installing fiberglass insulation in your home, be sure to put the paper or foil vapor barrier facing toward the heated and cooled living area of the home (down in attics, up under floors, in on walls) to prevent condensation from occurring.
Which direction does the paper go? A: The paper should always be placed towards the living space according to the manufacturers we are familiar with.
Insulation boards are no exception to this rule, and it's important to leave an air gap between them and the surface they're installed on.
If you're wondering whether to put the foil side of foam insulation board shiny side in or out, consider whether you want to make the space inside warmer or cooler. If you want to make the space warmer, the foil should face inside so it can reflect radiant heat back into the room.
We highly recommend the original Gorilla Glue as it's consistent and strong. We also love the spray adhesive 3M 78 Polystyrene Foam Insulation Spray Adhesive, but all of the above will work well (just be safe with the hot glue).
The R-value of rigid foam insulation varies based on the materials used and how many layers are installed. For example, our polyiso rigid foam boards have R-values between 6.5 and 6.8 per inch. If two layers are installed, it doubles the R-value and cuts heat/conditioned air loss in half.
The rule is that the insulation should always face the warm-in-winter side of the space. This rule means that, in most cases, the vapor barrier should face the home's interior.
The Difference Between Faced And Unfaced Insulation
Faced just means that kraft paper is attached to the insulation itself. The paper helps improve the sturdiness of the insulation so it doesn't fall down as much. Unfaced insulation is just as good as faced, but it doesn't have that paper attached to it.
R13 insulation is generally more affordable, which makes it an attractive option for budget-conscious projects. However, R19 insulation offers better long-term advantages because of its higher R-value.
Quite simply, it doesn't matter what side of aluminum folk you use. Either is acceptable. Since the exact same material makes up both sides, they will perform precisely the same way.
I agree with previous answer as the shiny and not shiny part has the same heat conductivity and it does not mean one side had been oxidized more than the other. The difference in shininess is simply a result of manufacturing process.
Shiny side up. Your vehicle hasn't flipped over after a rollover or accident. “Keep the shiny side up” means to have a safe trip.