Cellulose Insulation In Attic Ceiling

Cathedral ceilings must provide space between the roof deck and home s ceiling for adequate insulation and ventilation.

Cellulose insulation in attic ceiling.

Or whole house fans. Manufacturers also add borate for fire and insect resistance. Or attic staircase hatches. Blown in cellulose has a higher r rating and is less expensive than either blown insulation like fiberglass attic insulation or fiberglass batts.

Foam insulation may be made from polystyrene polyisocyanurate or polyurethane which are all types of plastic. Pick up the blower and insulation. The r value of cellulose insulation ranges from 3 6 3 8 per inch and spray foam insulation ranges from 3 5 3 7 per inch of insulation. Loose fill cellulose is relatively inexpensive yet still has an r value of about 3 5 per inch of thickness compared to fiberglass r value between r3 to r4 per inch.

Cellulose insulation is made from recycled paper products. This can be achieved through the use of truss joists scissor truss framing or sufficiently large rafters. Stabilized cellulose is used most often in attic roof insulation. This can prove advantageous at reducing the overall weight of the product on the ceiling drywall helping prevent possible sag.

The types of insulation that were most commonly made with asbestos are loose fill also called blown in insulation. Cellulose blown in ceiling insulation is a good choice for diyers. Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics. Lighter in weight than cellulose or mineral wool but it settles more than those materials so you ve got to put in a thicker layer to get the protection you need.

Recycled glass or sand that s melted and spun into fibers. The r values of both insulations will accumulate. But there s probably nothing to prevent air from moving past plumbing air duct and electrical penetrations. Sure there s insulation in your attic and crawlspace.

For example if your attic already has fiberglass insulation blankets installed you can improve its r value by installing blown in cellulose insulation on top of the blankets. This reduces settling and decreases the amount of cellulose needed. You can achieve better thermal performance in your attic by adding an additional layer of insulation. Cellulose insulation is usually a loose fill insulation.

For example cathedral ceilings built with 2x12 rafters have space for standard 10 inch batts r 30 and ventilation. If your attic or wall insulation is in batt or blanket form whether it s fiberglass cellulose or another material you generally don t have to be concerned about asbestos. It is applied with a very small amount of water to activate an adhesive of some kind. Loose fill insulation comes in a variety of materials.