Cellulose Insulation In Attic Ceiling

This reduces settling and decreases the amount of cellulose needed.

Cellulose insulation in attic ceiling.

The r values of both insulations will accumulate. Loose fill insulation comes in a variety of materials. Blown in cellulose has a higher r rating and is less expensive than either blown insulation like fiberglass attic insulation or fiberglass batts. Cellulose insulation is made from recycled paper products.

Pick up the blower and insulation. In spite of all their benefits neither fiberglass nor cellulose insulation provides an adequate air seal. When walls are already finished injecting loose fill cellulose insulation is one of the few ways of adding. 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.

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. The types of insulation that were most commonly made with asbestos are loose fill also called blown in insulation. Recycled glass or sand that s melted and spun into fibers. This can prove advantageous at reducing the overall weight of the product on the ceiling drywall helping prevent possible sag.

It is applied with a very small amount of water to activate an adhesive of some kind. Cellulose blown in ceiling insulation is a good choice for diyers. Or attic staircase hatches. You can achieve better thermal performance in your attic by adding an additional layer of insulation.

For example cathedral ceilings built with 2x12 rafters have space for standard 10 inch batts r 30 and ventilation. Loose fill cellulose insulation can settle around and conform to most of the obstructions found in walls and attics. 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. Stabilized cellulose is used most often in attic roof insulation.

Manufacturers also add borate for fire and insect resistance. But there s probably nothing to prevent air from moving past plumbing air duct and electrical penetrations. Or whole house fans. This can be achieved through the use of truss joists scissor truss framing or sufficiently large rafters.

Foam insulation may be made from polystyrene polyisocyanurate or polyurethane which are all types of plastic. 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. 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. Given that both insulators are equal in r value the difference in thermal resistance relies heavily on proper installation and air sealing.