Use natural materials, if possible, in areas of the house with low or no moisture. Options include cotton from post-industrial scrap denim, sheep's wool, hemp and cellulose from recycled newspaper, and other natural fibers. Keep in mind that cellulose insulation runs the risk of settling over time.
If you're concerned about having a positive impact on the environment, fiberglass batt is probably the best insulation option for your attic. That's because it's made of recycled sand and glass. Its composition also makes it light-weight and flame-resistant.
There are other types of insulation, but these are the most common. The best non-toxic insulation is either mineral wool or foam insulation inserts.
Polyester Ceiling Batts is a safe, non toxic, allergy friendly, light weight material that has high tensile strength, robustness & is unaffected by moisture.
What are healthy building insulation options? Alternative insulation materials with preferable toxicological or environmental profiles are available. Natural wool, cellular glass, cork, phenolic thermosets, and cementitious foam can meet flammability standards without the addition of harmful flame retardant chemicals.
Aerogel. This silica mineral-based material—developed by NASA, according to Thermablok—tops the list for insulating power, making it a fantastic eco-friendly option by its nature. The fact that it's more than 90 percent air, says CNET, is a bonus.
However, for the environmentally conscious consumer, there are a number of alternative, eco-friendly insulation solutions available, including soy-based materials, wool, hemp, and even recycled denim.
Foil-faced batt insulation is often used in cathedral ceilings because it provides the permeability rating often required for use in ceilings without attics. A vent baffle should be installed between the insulation and the roof decking to maintain the ventilation channel.
It is possible to over-insulate your house so much that it can't breathe. The whole point of home insulation is to tightly seal your home's interior. But if it becomes too tightly sealed with too many layers of insulation, moisture can get trapped inside those layers.
The answer to these issues may be adding insulation, but that still leaves the question of where to apply additional thermal protection to see the most benefit. While both ceiling and roof insulation will increase your home's resistance to outside temperatures, insulating the ceiling should be your priority.
Never place insulation close to water heaters, oil burners or anything hot. The backing is especially flammable and will be a major fire hazard for your home.
Given a benchmark thickness of 3.5 inches, a batt of Rockwool achieves an R-15 insulation value while fiberglass achieves an R-13 value, giving Rockwool about 15% better insulating ability over fiberglass at the same thickness.
In addition, many fiberglass insulation products use: Phenol formaldehyde to bind the fiberglass fibers together (iqair.com), and the off-gassing of formaldehyde can cause similar symptoms. Formaldehyde is a carcinogen and exposure to fiberglass insulation formaldehyde causes brain cancer.
Also, when laying down additional insulation, work from the perimeter toward the attic opening. Never lay insulation over recessed light fixtures or soffit vents. Keep all insulation at least 3 inches away from recessed "can" lights, unless they are rated IC (Insulated Ceiling).
Yes, it is possible to put too much insulation in a loft or attic.
If your attic has little or no existing insulation, you'll want to install an R-38 rated material. If your attic has 2-3″ of existing insulation, you'll want to install an R-30 to achieve a total of R-38. If your attic has 5-6″ of existing insulation, you'll want to install an R-19 to achieve a total of R-38.
Can I put plywood over insulation in the attic? Yes you can install plywood subflooring directly over the floor joists and insulation on your floor. You need to install rigid insulation boards on top of the attic flooring joists and then install plywood over the top.
The best way to insulate the inside of a ceiling depends on the type of ceiling and your specific needs. Spray foam insulation and batt insulation are two popular options. Spray Foam Insulation: This method involves spraying a liquid foam that expands and hardens.
Cellulose is an eco-friendly and cost-effective insulation for attics. Fiberglass and mineral wool are also popular choices because they are good at keeping heat in or out and resist moisture and pests. Special equipment blows the loose-fill material into the attic spaces, ensuring it covers everything evenly.
Most climates require a vapor barrier to cover ceiling insulation, but not all insulation requires a vapor barrier. It's always important to refer to your state's building codes.
The material should be faced if you install batting between your attic floor joists. Since the attic floor is the ceiling of the living space below, the facing is installed against the top of the ceiling drywall or plaster.
Fiberglass insulation is less dense than other types of insulation and does not create an airtight seal, which means air can travel freely through the insulation. This is called air leakage and it's one of the most common sources of energy loss in a house.
Polyisocyanurate boards typically contain TCPP, a halogenated flame retardant. Halogenated flame retardants are considered a very high concern to avoid because they can be persistent and toxic.