Blown Insulation Attic Vents

We offer our review of the three most popular types of attic insulation with a look at each one s pros and cons.

Blown insulation attic vents.

Blown insulation may require an additional block to prevent insulation from being blown into the soffit. Nothing unusual about that. 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. Blown in cellulose is an environmentally friendly material made from recycled newspaper so it s easier on your skin and lungs.

The number of vents in your roof will depend on the size of your attic. 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 works well between joist and stud spaces or if you have a wide open space or a crawlspace. This is the most common type of insulation you ll find in attics.

Batt and roll insulation and loose fill sometimes known as blown in insulation. A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents. Loose fill blown in insulation is best for tight spaces or if your attic already has a layer of insulation. See install batt and roll insulation for details.

There are two main types of insulation. Handy homeowners can install blown in insulation in the attic. Blowing insulation into walls is best left to the pros because it involves drilling into stud spaces that may contain electrical. Blown in spray foam batts and blankets.

Earlier this year i got a question about a home that had spray foam insulation in the attic. Typically fibreglass or cellulose blown in insulation. Cellulose blown in ceiling insulation is a good choice for diyers. A piece of rigid foam board placed on the outer edge of the top plate works very well for this.

This alternative to traditional building insulation fiberglass can be applied into wall cavities holes concrete slabs and even onto roof tiles and. For the same reason insulation shouldn t touch the roof s underside. 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. The standard is one square foot of venting for every 150 square feet distributed evenly between the soffit and roof vents.

Blown in cellulose has a higher r rating and is less expensive than either blown insulation like fiberglass attic insulation or fiberglass batts. Unfortunately blow in insulation can drift.