What is the proper way to install attic insulation?
Quote from the video:
Quote from Youtube video: All right a vapor barrier. Always goes to the warm. Side. So if you heat your house most of the time the vapor barrier phases.
Does it matter which way you install insulation?
Regardless of whether fiberglass insulation is installed in a wall, attic, or crawlspace; the paper facing should always face toward the inside of the home. That’s because the paper contains a layer of asphalt adhesive which prevents water vapor from passing through it.
How do you install ceiling batt insulation?
Quote from the video:
Quote from Youtube video: Once the rafter mates are in place you can begin installing insulation simply push the bat straight up through the ceiling joists. Then pull it back down. So the bat fits evenly in the space.
How do you install batting insulation?
Quote from the video:
Quote from Youtube video: Now the proper way to install the bat would be to cut a piece and fill that gap along the side of the bat. Unfortunately the common practice can be to just open up that flange and stretch it out.
Should you use faced or unfaced insulation in the attic?
Attic Floor Insulation
Unfinished or uninsulated attics need a layer of protection to keep hot or cold air from migrating to the rest of your home. If you install batting between your attic floor joists, the material should be faced.
Can you have too much insulation in your attic?
It’s possible to over-insulate an attic as too much will cause moisture buildup and eventually result in mold. Eventually, adding more insulation leads to diminishing returns in trapping heat as well.
What happens if insulation is installed backwards?
So if it is installed upside down, the paper moisture barrier can actually keep moisture in-between the paper and the sub-flooring. This can lead to mold issues, as well as structural deterioration. Also, the paper is flammable so not properly installing it can create a fire hazard.
Should you tape insulation seams?
Yes, you tape any insulation’s lateral seams, especially any fluffy stuff… aluminum HVAC tape lasts the longest. The fluffy stuff really only works best in dead air space. Which also means the un-faced side (where you don’t tape anything).
Do you need to staple insulation?
Use enough staples to hold the insulation firmly in place (about every 8″) and avoid gaps and “fishmouths” between the flanges and framing.
When installing insulation which side faces out?
Picking the right face is essential with fiberglass insulation that has a vapor barrier (meaning with Kraft paper or foil attached on one side). It should always face the warm-in-winter side. Thus, in cold climates, it should face the interior; in hot humid climates, it should face the exterior.
Can I use batt insulation in attic?
For DIY attic insulation, you’ve got two choices: loose fill or batt (the common term for blanket insulation). Both can be added to uninsulated attics or layered over existing material.
Does batt insulation need to be covered?
Because loose-fill or batt insulation on the attic floor and batts installed under floors are not exposed to significant air movement, they do not need to be covered on the exterior side.
Is faced insulation better than Unfaced?
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.
Do I need a plastic vapor barrier if I use faced insulation?
No, you should not do this. As mentioned above, faced insulation that has a vapor barrier can easily trap moisture. If you put another faced insulation on top of face insulation, a significant amount of moisture can form inside your insulation and in your walls to damage them.
Should I insulate the joists and rafters?
Insulating between the joists of your loft will keep your house warmer, but make the roof space above colder. This means pipes and water tanks in the loft space could be more likely to freeze, so you will need to insulate them.
Should loft insulation be pushed up to the eaves?
Don’t pack it in: squashing insulation to fit the space seriously compromises its effectiveness. Also avoid pushing the insulation into the eaves to keep ventilation paths at the edge of the roof well aired and roof timbers dry.
Is it better to insulate ceiling or roof?
If you are deciding between insulating the roof deck or the ceiling, Insulating your ceiling should be the priority. Not only is it easier but ceiling insulation is beneficial in a number of ways: Keeps the temperature in the building regulated. Saves on energy costs.
How do you install insulation between rafters?
Quote from the video:
Quote from Youtube video: So i'm just going to put a little small gap down the side to allow that through you can see there i've just put a small groove through the insulation for that cable to fall.
Should you insulate the underside of your roof?
In order to avoid damage to the roof deck, you should insulate ceilings to create an air barrier between the living space and an unfinished attic or airspace underneath the roof deck.
Does insulation Board need an air gap?
Solid walls, however, must be faced with an insulation product, so they can often eat into floor space depending on the thickness of the insulation as an air gap is needed to prevent condensation and moisture build-up. Insulation with a moisture barrier means you don’t need to leave an air gap during installation.
