Attic Insulation Eve Vents Blown Insulation

See install batt and roll insulation for details.

Attic insulation eve vents blown insulation.

Blown insulation may require an additional block to prevent insulation from being blown into the soffit. Blown in cellulose is an environmentally friendly material made from recycled newspaper so it s easier on your skin and lungs. Vents placed in the underside of the roof s overhang or soffit provide a means for air to get into the attic to help cool it in the summer months. Batt and roll insulation and loose fill sometimes known as blown in insulation.

Your options for attic insulation range from radiant barriers to sheets of mineral wool but most homeowners stick with products made from cellulose or fiberglass. A piece of rigid foam board placed on the outer edge of the top plate works very well for this. The insulation should extend over the top of the outer wall and stop short of the vents not touching the roof in such a way as to block air passages from the vents into the attic batts of insulation can be carefully pushed over the top of the outside walls and stopped short of the vents. This alternative to traditional building insulation fiberglass can be applied into wall cavities holes concrete slabs and even onto roof tiles and.

Loose fill blown in insulation is best for tight spaces or if your attic already has a layer of insulation. Batt and roll insulation works well between joist and stud spaces or if you have a wide open space or a crawlspace. Blown in spray foam batts and blankets. Unfortunately blow in insulation can drift.

Wind can blow up through soffit vents disturbing insulation and moving it out of place. This is especially true with loose fiber insulation that has been blown into the attic. Blocking the eve vents with the insulation is one of the most common causes of moisture problems in attics. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow.

Covering up the soffit vents with loose fill or batts which can happen if you stuff insulation along the eaves is a huge no no. For the same reason insulation shouldn t touch the roof s underside. Blown in cellulose has a higher r rating and is less expensive than either blown insulation like fiberglass attic insulation or fiberglass batts. Cellulose blown in ceiling insulation is a good choice for diyers.

There are two main types of insulation.